From 8008cd68d9b38c5cc7c5467f2811b11600df02ec Mon Sep 17 00:00:00 2001
From: "abd.shallal" <abd.shallal@gmail.com>
Date: Tue, 6 Aug 2019 16:41:37 +0300
Subject: [PATCH] 9th day of python challenges 139-142

---
 .idea/inspectionProfiles/Project_Default.xml |   4 +
 .idea/workspace.xml                          | 350 ++++++++++++-------
 challenges139-145/challenge-139.py           |  62 +++-
 challenges139-145/challenge-140.py           |  84 +++++
 challenges139-145/challenge-141.py           |  92 +++++
 challenges139-145/challenge-142.py           |  50 +++
 challenges139-145/sqlite-python-tutorial.py  | 192 ++++++++++
 commands                                     |   6 +-
 useful-link                                  |   4 +
 9 files changed, 716 insertions(+), 128 deletions(-)
 create mode 100644 challenges139-145/challenge-140.py
 create mode 100644 challenges139-145/challenge-141.py
 create mode 100644 challenges139-145/challenge-142.py
 create mode 100644 challenges139-145/sqlite-python-tutorial.py
 create mode 100644 useful-link

diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml
index 1aad79f..ec2122c 100644
--- a/.idea/inspectionProfiles/Project_Default.xml
+++ b/.idea/inspectionProfiles/Project_Default.xml
@@ -76,6 +76,10 @@
           <option value="E501" />
           <option value="W29" />
           <option value="E501" />
+          <option value="W29" />
+          <option value="E501" />
+          <option value="W29" />
+          <option value="E501" />
         </list>
       </option>
     </inspection_tool>
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 530c665..3f5805a 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -2,10 +2,15 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="7106b959-52c5-4d26-9f5a-8703a78c8c29" name="Default Changelist" comment="">
-      <change afterPath="$PROJECT_DIR$/challenges139-145/challenge-139.py" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/commands" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/challenges139-145/challenge-140.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/challenges139-145/challenge-141.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/challenges139-145/challenge-142.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/challenges139-145/sqlite-python-tutorial.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/useful-link" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/inspectionProfiles/Project_Default.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/inspectionProfiles/Project_Default.xml" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/challenges139-145/challenge-139.py" beforeDir="false" afterPath="$PROJECT_DIR$/challenges139-145/challenge-139.py" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/commands" beforeDir="false" afterPath="$PROJECT_DIR$/commands" afterDir="false" />
     </list>
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
@@ -14,21 +19,51 @@
     <option name="LAST_RESOLUTION" value="IGNORE" />
   </component>
   <component name="FileEditorManager">
-    <leaf>
+    <leaf SIDE_TABS_SIZE_LIMIT_KEY="300">
       <file pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/commands">
+        <entry file="file://$PROJECT_DIR$/challenges139-145/challenge-139.py">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="30">
-              <caret line="2" selection-start-line="2" selection-end-line="2" />
+            <state relative-caret-position="195">
+              <caret line="13" selection-start-line="13" selection-end-line="22" selection-end-column="15" />
+              <folding>
+                <element signature="e#0#14#0" expanded="true" />
+              </folding>
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/challenges139-145/challenge-140.py">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="525">
+              <caret line="44" selection-start-line="38" selection-end-line="44" />
+              <folding>
+                <element signature="e#0#14#0" expanded="true" />
+              </folding>
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/challenges139-145/challenge-141.py">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="285">
+              <caret line="31" column="54" selection-start-line="31" selection-start-column="40" selection-end-line="31" selection-end-column="54" />
+              <folding>
+                <element signature="e#0#14#0" expanded="true" />
+              </folding>
             </state>
           </provider>
         </entry>
       </file>
       <file pinned="false" current-in-tab="true">
-        <entry file="file://$PROJECT_DIR$/challenges139-145/challenge-139.py">
+        <entry file="file://$PROJECT_DIR$/challenges139-145/challenge-142.py">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="180">
-              <caret line="12" selection-start-line="12" selection-end-line="12" />
+            <state relative-caret-position="202">
+              <caret line="29" lean-forward="true" selection-start-line="29" selection-end-line="29" />
+              <folding>
+                <element signature="e#0#14#0" expanded="true" />
+              </folding>
             </state>
           </provider>
         </entry>
@@ -45,6 +80,7 @@
   <component name="FindInProjectRecents">
     <findStrings>
       <find>upper</find>
+      <find>create_project</find>
     </findStrings>
     <dirStrings>
       <dir>$PROJECT_DIR$</dir>
@@ -57,16 +93,23 @@
     <option name="CHANGED_PATHS">
       <list>
         <option value="$PROJECT_DIR$/challenges124-132/challenge-124.py" />
-        <option value="$PROJECT_DIR$/commands" />
+        <option value="$PROJECT_DIR$/challenges139-145/test.py" />
+        <option value="$PROJECT_DIR$/challenges139-145/sqlite-python-tutorial.py" />
         <option value="$PROJECT_DIR$/challenges139-145/challenge-139.py" />
+        <option value="$PROJECT_DIR$/challenges139-145/challenge-149.py" />
+        <option value="$PROJECT_DIR$/commands" />
+        <option value="$PROJECT_DIR$/useful-link" />
+        <option value="$PROJECT_DIR$/challenges139-145/challenge-141.py" />
+        <option value="$PROJECT_DIR$/challenges139-145/challenge-140.py" />
+        <option value="$PROJECT_DIR$/challenges139-145/challenge-142.py" />
       </list>
     </option>
   </component>
   <component name="ProjectFrameBounds" extendedState="6">
-    <option name="x" value="473" />
-    <option name="y" value="4" />
-    <option name="width" value="958" />
-    <option name="height" value="1083" />
+    <option name="x" value="443" />
+    <option name="y" value="-28" />
+    <option name="width" value="956" />
+    <option name="height" value="1082" />
   </component>
   <component name="ProjectId" id="1O5wfQ7DfSfe4iwhiOQ9ZxAmGlm" />
   <component name="ProjectLevelVcsManager" settingsEditedManually="true" />
@@ -82,6 +125,11 @@
               <item name="paython-by-learn" type="b2602c69:ProjectViewProjectNode" />
               <item name="paython-by-learn" type="462c0819:PsiDirectoryNode" />
             </path>
+            <path>
+              <item name="paython-by-learn" type="b2602c69:ProjectViewProjectNode" />
+              <item name="paython-by-learn" type="462c0819:PsiDirectoryNode" />
+              <item name="challenges139-145" type="462c0819:PsiDirectoryNode" />
+            </path>
           </expand>
           <select />
         </subPane>
@@ -125,7 +173,7 @@
       </list>
     </option>
   </component>
-  <component name="RunManager" selected="Python.challenge-139">
+  <component name="RunManager" selected="Python.challenge-142">
     <configuration default="true" type="PythonConfigurationType" factoryName="Python">
       <module name="paython-by-learn" />
       <option name="INTERPRETER_OPTIONS" value="" />
@@ -148,91 +196,6 @@
       <option name="INPUT_FILE" value="" />
       <method v="2" />
     </configuration>
-    <configuration name="challenge-121" type="PythonConfigurationType" factoryName="Python" temporary="true">
-      <module name="paython-by-learn" />
-      <option name="INTERPRETER_OPTIONS" value="" />
-      <option name="PARENT_ENVS" value="true" />
-      <envs>
-        <env name="PYTHONUNBUFFERED" value="1" />
-      </envs>
-      <option name="SDK_HOME" value="" />
-      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/challenges118-123" />
-      <option name="IS_MODULE_SDK" value="true" />
-      <option name="ADD_CONTENT_ROOTS" value="true" />
-      <option name="ADD_SOURCE_ROOTS" value="true" />
-      <EXTENSION ID="PythonCoverageRunConfigurationExtension" runner="coverage.py" />
-      <option name="SCRIPT_NAME" value="$PROJECT_DIR$/challenges118-123/challenge-121.py" />
-      <option name="PARAMETERS" value="" />
-      <option name="SHOW_COMMAND_LINE" value="true" />
-      <option name="EMULATE_TERMINAL" value="false" />
-      <option name="MODULE_MODE" value="false" />
-      <option name="REDIRECT_INPUT" value="false" />
-      <option name="INPUT_FILE" value="" />
-      <method v="2" />
-    </configuration>
-    <configuration name="challenge-122" type="PythonConfigurationType" factoryName="Python" temporary="true">
-      <module name="paython-by-learn" />
-      <option name="INTERPRETER_OPTIONS" value="" />
-      <option name="PARENT_ENVS" value="true" />
-      <envs>
-        <env name="PYTHONUNBUFFERED" value="1" />
-      </envs>
-      <option name="SDK_HOME" value="" />
-      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/challenges118-123" />
-      <option name="IS_MODULE_SDK" value="true" />
-      <option name="ADD_CONTENT_ROOTS" value="true" />
-      <option name="ADD_SOURCE_ROOTS" value="true" />
-      <EXTENSION ID="PythonCoverageRunConfigurationExtension" runner="coverage.py" />
-      <option name="SCRIPT_NAME" value="$PROJECT_DIR$/challenges118-123/challenge-122.py" />
-      <option name="PARAMETERS" value="" />
-      <option name="SHOW_COMMAND_LINE" value="true" />
-      <option name="EMULATE_TERMINAL" value="false" />
-      <option name="MODULE_MODE" value="false" />
-      <option name="REDIRECT_INPUT" value="false" />
-      <option name="INPUT_FILE" value="" />
-      <method v="2" />
-    </configuration>
-    <configuration name="challenge-123" type="PythonConfigurationType" factoryName="Python" temporary="true">
-      <module name="paython-by-learn" />
-      <option name="INTERPRETER_OPTIONS" value="" />
-      <option name="PARENT_ENVS" value="true" />
-      <envs>
-        <env name="PYTHONUNBUFFERED" value="1" />
-      </envs>
-      <option name="SDK_HOME" value="" />
-      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/challenges118-123" />
-      <option name="IS_MODULE_SDK" value="true" />
-      <option name="ADD_CONTENT_ROOTS" value="true" />
-      <option name="ADD_SOURCE_ROOTS" value="true" />
-      <EXTENSION ID="PythonCoverageRunConfigurationExtension" runner="coverage.py" />
-      <option name="SCRIPT_NAME" value="$PROJECT_DIR$/challenges118-123/challenge-123.py" />
-      <option name="PARAMETERS" value="" />
-      <option name="SHOW_COMMAND_LINE" value="true" />
-      <option name="EMULATE_TERMINAL" value="false" />
-      <option name="MODULE_MODE" value="false" />
-      <option name="REDIRECT_INPUT" value="false" />
-      <option name="INPUT_FILE" value="" />
-      <method v="2" />
-    </configuration>
-    <configuration name="challenge-124" type="PythonConfigurationType" factoryName="Python" temporary="true">
-      <module name="paython-by-learn" />
-      <option name="INTERPRETER_OPTIONS" value="" />
-      <option name="PARENT_ENVS" value="true" />
-      <option name="SDK_HOME" value="" />
-      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/challenges124-132" />
-      <option name="IS_MODULE_SDK" value="true" />
-      <option name="ADD_CONTENT_ROOTS" value="true" />
-      <option name="ADD_SOURCE_ROOTS" value="true" />
-      <EXTENSION ID="PythonCoverageRunConfigurationExtension" runner="coverage.py" />
-      <option name="SCRIPT_NAME" value="$PROJECT_DIR$/challenges124-132/challenge-124.py" />
-      <option name="PARAMETERS" value="" />
-      <option name="SHOW_COMMAND_LINE" value="true" />
-      <option name="EMULATE_TERMINAL" value="false" />
-      <option name="MODULE_MODE" value="false" />
-      <option name="REDIRECT_INPUT" value="false" />
-      <option name="INPUT_FILE" value="" />
-      <method v="2" />
-    </configuration>
     <configuration name="challenge-139" type="PythonConfigurationType" factoryName="Python" temporary="true">
       <module name="paython-by-learn" />
       <option name="INTERPRETER_OPTIONS" value="" />
@@ -252,13 +215,89 @@
       <option name="INPUT_FILE" value="" />
       <method v="2" />
     </configuration>
+    <configuration name="challenge-140" type="PythonConfigurationType" factoryName="Python" temporary="true">
+      <module name="paython-by-learn" />
+      <option name="INTERPRETER_OPTIONS" value="" />
+      <option name="PARENT_ENVS" value="true" />
+      <option name="SDK_HOME" value="" />
+      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/challenges139-145" />
+      <option name="IS_MODULE_SDK" value="true" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <EXTENSION ID="PythonCoverageRunConfigurationExtension" runner="coverage.py" />
+      <option name="SCRIPT_NAME" value="$PROJECT_DIR$/challenges139-145/challenge-140.py" />
+      <option name="PARAMETERS" value="" />
+      <option name="SHOW_COMMAND_LINE" value="true" />
+      <option name="EMULATE_TERMINAL" value="false" />
+      <option name="MODULE_MODE" value="false" />
+      <option name="REDIRECT_INPUT" value="false" />
+      <option name="INPUT_FILE" value="" />
+      <method v="2" />
+    </configuration>
+    <configuration name="challenge-141" type="PythonConfigurationType" factoryName="Python" temporary="true">
+      <module name="paython-by-learn" />
+      <option name="INTERPRETER_OPTIONS" value="" />
+      <option name="PARENT_ENVS" value="true" />
+      <option name="SDK_HOME" value="" />
+      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/challenges139-145" />
+      <option name="IS_MODULE_SDK" value="true" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <EXTENSION ID="PythonCoverageRunConfigurationExtension" runner="coverage.py" />
+      <option name="SCRIPT_NAME" value="$PROJECT_DIR$/challenges139-145/challenge-141.py" />
+      <option name="PARAMETERS" value="" />
+      <option name="SHOW_COMMAND_LINE" value="true" />
+      <option name="EMULATE_TERMINAL" value="false" />
+      <option name="MODULE_MODE" value="false" />
+      <option name="REDIRECT_INPUT" value="false" />
+      <option name="INPUT_FILE" value="" />
+      <method v="2" />
+    </configuration>
+    <configuration name="challenge-142" type="PythonConfigurationType" factoryName="Python" temporary="true">
+      <module name="paython-by-learn" />
+      <option name="INTERPRETER_OPTIONS" value="" />
+      <option name="PARENT_ENVS" value="true" />
+      <option name="SDK_HOME" value="" />
+      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/challenges139-145" />
+      <option name="IS_MODULE_SDK" value="true" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <EXTENSION ID="PythonCoverageRunConfigurationExtension" runner="coverage.py" />
+      <option name="SCRIPT_NAME" value="$PROJECT_DIR$/challenges139-145/challenge-142.py" />
+      <option name="PARAMETERS" value="" />
+      <option name="SHOW_COMMAND_LINE" value="true" />
+      <option name="EMULATE_TERMINAL" value="false" />
+      <option name="MODULE_MODE" value="false" />
+      <option name="REDIRECT_INPUT" value="false" />
+      <option name="INPUT_FILE" value="" />
+      <method v="2" />
+    </configuration>
+    <configuration name="sqlite-python-tutorial" type="PythonConfigurationType" factoryName="Python" temporary="true">
+      <module name="paython-by-learn" />
+      <option name="INTERPRETER_OPTIONS" value="" />
+      <option name="PARENT_ENVS" value="true" />
+      <option name="SDK_HOME" value="" />
+      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/challenges139-145" />
+      <option name="IS_MODULE_SDK" value="true" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <EXTENSION ID="PythonCoverageRunConfigurationExtension" runner="coverage.py" />
+      <option name="SCRIPT_NAME" value="$PROJECT_DIR$/challenges139-145/sqlite-python-tutorial.py" />
+      <option name="PARAMETERS" value="" />
+      <option name="SHOW_COMMAND_LINE" value="true" />
+      <option name="EMULATE_TERMINAL" value="false" />
+      <option name="MODULE_MODE" value="false" />
+      <option name="REDIRECT_INPUT" value="false" />
+      <option name="INPUT_FILE" value="" />
+      <method v="2" />
+    </configuration>
     <recent_temporary>
       <list>
+        <item itemvalue="Python.challenge-142" />
+        <item itemvalue="Python.challenge-141" />
+        <item itemvalue="Python.challenge-140" />
         <item itemvalue="Python.challenge-139" />
-        <item itemvalue="Python.challenge-124" />
-        <item itemvalue="Python.challenge-123" />
-        <item itemvalue="Python.challenge-122" />
-        <item itemvalue="Python.challenge-121" />
+        <item itemvalue="Python.sqlite-python-tutorial" />
       </list>
     </recent_temporary>
   </component>
@@ -283,15 +322,9 @@
   </component>
   <component name="ToolWindowManager">
     <frame x="-1" y="-4" width="1922" height="1085" extended-state="6" />
-    <editor active="true" />
     <layout>
-      <window_info content_ui="combo" id="Project" order="0" visible="true" weight="0.24986821" />
+      <window_info content_ui="combo" id="Project" order="0" visible="true" weight="0.16552451" />
       <window_info id="Structure" order="1" weight="0.25" />
-      <window_info anchor="bottom" id="Educational.CheckDetails" />
-      <window_info anchor="bottom" id="Version Control" />
-      <window_info anchor="bottom" id="Terminal" weight="0.3294979" />
-      <window_info anchor="bottom" id="Event Log" side_tool="true" />
-      <window_info anchor="bottom" id="Python Console" visible="true" weight="0.3294979" />
       <window_info anchor="bottom" id="Message" order="0" />
       <window_info anchor="bottom" id="Find" order="1" />
       <window_info anchor="bottom" id="Run" order="2" />
@@ -299,6 +332,11 @@
       <window_info anchor="bottom" id="Cvs" order="4" weight="0.25" />
       <window_info anchor="bottom" id="Inspection" order="5" weight="0.4" />
       <window_info anchor="bottom" id="TODO" order="6" />
+      <window_info anchor="bottom" id="Version Control" order="7" />
+      <window_info anchor="bottom" id="Educational.CheckDetails" order="8" />
+      <window_info anchor="bottom" id="Terminal" order="9" weight="0.3294979" />
+      <window_info anchor="bottom" id="Event Log" order="10" side_tool="true" />
+      <window_info active="true" anchor="bottom" id="Python Console" order="11" visible="true" weight="0.31066945" />
       <window_info anchor="right" id="Commander" internal_type="SLIDING" order="0" type="SLIDING" weight="0.4" />
       <window_info anchor="right" id="Ant Build" order="1" weight="0.25" />
       <window_info anchor="right" content_ui="combo" id="Hierarchy" order="2" weight="0.25" />
@@ -354,26 +392,104 @@
     <MESSAGE value="8th day of python challenges 111" />
     <MESSAGE value="8th day of python challenges 111-117" />
     <MESSAGE value="9th day of python challenges 118-123" />
-    <option name="LAST_COMMIT_MESSAGE" value="9th day of python challenges 118-123" />
+    <MESSAGE value="9th day of python challenges 124-145" />
+    <option name="LAST_COMMIT_MESSAGE" value="9th day of python challenges 124-145" />
   </component>
   <component name="com.intellij.coverage.CoverageDataManagerImpl">
     <SUITE FILE_PATH="coverage/paython_by_learn$challenge_039.coverage" NAME="challenge-039 Coverage Results" MODIFIED="1563282890417" SOURCE_PROVIDER="com.intellij.coverage.DefaultCoverageFileProvider" RUNNER="coverage.py" COVERAGE_BY_TEST_ENABLED="true" COVERAGE_TRACING_ENABLED="false" WORKING_DIRECTORY="$PROJECT_DIR$/challenges35-44" />
   </component>
   <component name="editorHistoryManager">
-    <entry file="file://$PROJECT_DIR$/challenges124-132/challenge-124.py">
+    <entry file="file://$PROJECT_DIR$/challenges124-132/challenge-124.py" />
+    <entry file="file://$PROJECT_DIR$/challenges139-145/python-by-example" />
+    <entry file="file://$PROJECT_DIR$/challenges118-123/challenge-123.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="184">
+          <caret line="44" column="12" selection-start-line="44" selection-start-column="12" selection-end-line="59" selection-end-column="57" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/challenges118-123/challenge-118.py">
       <provider selected="true" editor-type-id="text-editor" />
     </entry>
+    <entry file="file://$PROJECT_DIR$/useful-link">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="30">
+          <caret line="2" column="35" selection-start-line="2" selection-start-column="35" selection-end-line="2" selection-end-column="35" />
+        </state>
+      </provider>
+    </entry>
     <entry file="file://$PROJECT_DIR$/commands">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="30">
-          <caret line="2" selection-start-line="2" selection-end-line="2" />
+        <state relative-caret-position="45">
+          <caret line="3" selection-start-line="3" selection-end-line="3" selection-end-column="35" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/challenges88-95/challenge-091.py">
+      <provider selected="true" editor-type-id="text-editor" />
+    </entry>
+    <entry file="file://$PROJECT_DIR$/challenges88-95/challenge-092.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state>
+          <folding>
+            <element signature="e#0#19#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/challenges88-95/challenge-093.py">
+      <provider selected="true" editor-type-id="text-editor" />
+    </entry>
+    <entry file="file://$PROJECT_DIR$/challenges88-95/challenge-094.py">
+      <provider selected="true" editor-type-id="text-editor" />
+    </entry>
+    <entry file="file://$PROJECT_DIR$/challenges139-145/sqlite-python-tutorial.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="180">
+          <caret line="36" column="4" selection-start-line="36" selection-start-column="4" selection-end-line="41" selection-end-column="16" />
+          <folding>
+            <element signature="e#0#14#0" expanded="true" />
+          </folding>
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/challenges139-145/challenge-139.py">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="180">
-          <caret line="12" selection-start-line="12" selection-end-line="12" />
+        <state relative-caret-position="195">
+          <caret line="13" selection-start-line="13" selection-end-line="22" selection-end-column="15" />
+          <folding>
+            <element signature="e#0#14#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/challenges139-145/challenge-140.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="525">
+          <caret line="44" selection-start-line="38" selection-end-line="44" />
+          <folding>
+            <element signature="e#0#14#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/challenges139-145/challenge-141.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="285">
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+          <folding>
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+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/challenges139-145/challenge-142.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="202">
+          <caret line="29" lean-forward="true" selection-start-line="29" selection-end-line="29" />
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diff --git a/challenges139-145/challenge-139.py b/challenges139-145/challenge-139.py
index cb19e0c..d0faa19 100644
--- a/challenges139-145/challenge-139.py
+++ b/challenges139-145/challenge-139.py
@@ -1,12 +1,54 @@
 import sqlite3
+from sqlite3 import Error
 
-with sqlite3.connect('python-by-example') as db:
-    cursor = db.cursor()
-    cursor.execute("""CREATE TABLE IF NOT EXISTS employees(
-                                                    id integer PRIMARY KEY,
-                                                    name text NOT NULL,
-                                                    dept text NOT NULL,
-                                                    salary integer);""")
-    cursor.execute("""INSERT INTO employees(id,name,dept,salary)
-                        VALUES("1","Bob","Sales","25000")""")
-    db.commit()
+
+def create_connection(db):
+    try:
+        conn = sqlite3.connect(db)
+        return conn
+    except Error as e:
+        print(e)
+    return None
+
+
+def create_phone_book_table(conn):
+    sql_create_projects_table = """ CREATE TABLE IF NOT EXISTS PhoneBook (
+                                        id integer PRIMARY KEY,
+                                        first_name text NOT NULL,
+                                        surname text,
+                                        phone integer
+                                    ); """
+    cur = conn.cursor()
+    cur.execute(sql_create_projects_table)
+    cur.close()
+
+
+def create_phone_book_record(conn, phone_book):
+    sql = ''' INSERT INTO PhoneBook(first_name,surname,phone)
+              VALUES(?,?,?) '''
+    cur = conn.cursor()
+    cur.execute(sql, phone_book)
+    cur.close()
+    return cur.lastrowid
+
+
+def main():
+    conn = create_connection('python-by-example.db')
+
+    with conn:
+        create_phone_book_table(conn)
+
+        phone_book_record_1 = ('Simon',  'Howels',  '01223349752')
+        phone_book_record_2 = ('Karen',  'Philips', '01954295773')
+        phone_book_record_3 = ('Darren', 'Smith',   '01583749012')
+        phone_book_record_4 = ('Anne',   'Jones',   '01323567322')
+        phone_book_record_5 = ('Mark',   'Smith',   '01223855534')
+
+        create_phone_book_record(conn, phone_book_record_1)
+        create_phone_book_record(conn, phone_book_record_2)
+        create_phone_book_record(conn, phone_book_record_3)
+        create_phone_book_record(conn, phone_book_record_4)
+        create_phone_book_record(conn, phone_book_record_5)
+
+
+main()
diff --git a/challenges139-145/challenge-140.py b/challenges139-145/challenge-140.py
new file mode 100644
index 0000000..281feb0
--- /dev/null
+++ b/challenges139-145/challenge-140.py
@@ -0,0 +1,84 @@
+import sqlite3
+from sqlite3 import Error
+
+
+def create_connection(db):
+    try:
+        conn = sqlite3.connect(db)
+        return conn
+    except Error as e:
+        print(e)
+    return None
+
+
+def show_all(conn):
+    cur = conn.cursor()
+    cur.execute("SELECT * FROM PhoneBook")
+    rows = cur.fetchall()
+    for row in rows:
+        print(row)
+
+
+def view_phone_book(conn, phone_id):
+    cur = conn.cursor()
+    cur.execute(str("SELECT * FROM PhoneBook WHERE id = " + str(phone_id)))
+    print(cur.fetchone())
+    cur.close()
+
+
+def add_phone_book(conn, phone_book):
+    sql = ''' INSERT INTO PhoneBook(first_name,surname,phone)
+              VALUES(?,?,?) '''
+    cur = conn.cursor()
+    cur.execute(sql, phone_book)
+    print(cur.fetchone())
+    cur.close()
+
+
+def surname_in_phone_book(conn, surname):
+    sql = "SELECT * FROM  PhoneBook WHERE surname like '%" + surname + "%'"
+    cur = conn.cursor()
+    cur.execute(sql)
+    rows = cur.fetchall()
+    for row in rows:
+        print(row)
+
+
+def delete_phone_book(conn, phone_id):
+    cur = conn.cursor()
+    cur.execute(str("DELETE FROM tasks WHERE id = " + str(phone_id)))
+    cur.close()
+
+
+def main():
+
+    conn = create_connection('python-by-example.db')
+
+    with conn:
+        print('\n\nMain Menu\n\n\n')
+        print('1) View phone book ')
+        print('2) Add to phone book')
+        print('3) Search for surname')
+        print('4) Delete person from phone book')
+        print('5) Quit')
+        operation_ask = int(input('Enter your selection : '))
+        if operation_ask == 1:
+            ask_id = int(input('Enter id to show : '))
+            view_phone_book(conn, ask_id)
+        elif operation_ask == 2:
+            ask_name = str(input('Enter name : '))
+            ask_surname = str(input('Enter surname : '))
+            ask_phone = str(input('Enter phone : '))
+            phone_book = (ask_name, ask_surname, ask_phone)
+            add_phone_book(conn, phone_book)
+        elif operation_ask == 3:
+            ask_surname = str(input('Enter surname to show : '))
+            surname_in_phone_book(conn, ask_surname)
+        elif operation_ask == 4:
+            ask_id = int(input('Enter id to delete : '))
+            delete_phone_book(conn, ask_id)
+        else:
+            print('Invalid input, please try again.')
+
+
+main()
diff --git a/challenges139-145/challenge-141.py b/challenges139-145/challenge-141.py
new file mode 100644
index 0000000..8de0a0d
--- /dev/null
+++ b/challenges139-145/challenge-141.py
@@ -0,0 +1,92 @@
+import sqlite3
+from sqlite3 import Error
+
+
+def create_connection(db):
+    try:
+        conn = sqlite3.connect(db)
+        return conn
+    except Error as e:
+        print(e)
+    return None
+
+
+def create_author_table(conn):
+    try:
+        sql_create_projects_table = """ CREATE TABLE IF NOT EXISTS authors (
+                                        name text PRIMARY KEY,
+                                        birth_place text
+                                    ); """
+        cur = conn.cursor()
+        cur.execute(sql_create_projects_table)
+        cur.close()
+    except Error as e:
+        print(e)
+
+
+def create_books_table(conn):
+    sql_create_projects_table = """ CREATE TABLE IF NOT EXISTS books (
+                                        id integer PRIMARY KEY,
+                                        title text NOT NULL,
+                                        author text,
+                                        published_date text
+                                    ); """
+    cur = conn.cursor()
+    cur.execute(sql_create_projects_table)
+    cur.close()
+
+
+def insert_to_authors(conn, authors):
+    cur = conn.cursor()
+    for author in authors:
+        sql = 'INSERT INTO authors (name, birth_place) VALUES (?, ?)'
+        cur.execute(sql, author)
+        conn.commit()
+    cur.close()
+
+
+def insert_to_books(conn, books):
+    cur = conn.cursor()
+    for book in books:
+        sql = 'INSERT INTO books (title, author, published_date) VALUES (?, ?, ?)'
+        cur.execute(sql, book)
+        print(cur.fetchone())
+    cur.close()
+
+
+def main():
+
+    conn = create_connection('BookInfo.db')
+
+    with conn:
+        create_author_table(conn)
+        create_books_table(conn)
+
+        authors = [
+            ['Agatha Christie', 'Torquay'],
+            ['Cecelia Ahern', 'Dublin'],
+            ['J.K, Rowling', 'Bristol'],
+            ['Oscar Wilde', 'Dublin']
+        ]
+
+        insert_to_authors(conn, authors)
+
+        books = [
+            ['De Profundis', 'Oscar Wilde', '1905'],
+            ['Harry Potter and the chamber of secrets', 'J.K. Rowling', '1998'],
+            ['Harry Potter and the prisoner or Azkaban', 'J.K. Rowling', '1999'],
+            ['Lyrebird', 'Cecelia Ahren', '2017'],
+            ['Murder At the Orient Express', 'Agatha Christie', '1934'],
+            ['Perfect', 'Cecelia Ahren', '2017'],
+            ['The marble collector', 'Cecelia Ahren', '2016'],
+            ['The murder on the links', 'Agatha Christie', '1923'],
+            ['The picture of Dorian Gray', 'Oscar Wilde', '1890'],
+            ['The secret adversary', 'Agatha Christie', '1921'],
+            ['The seven dials mystery', 'Agatha Christie', '1929'],
+            ['The year i met you', 'Cecelia Ahren', '2014']
+        ]
+
+        insert_to_books(conn, books)
+
+
+main()
diff --git a/challenges139-145/challenge-142.py b/challenges139-145/challenge-142.py
new file mode 100644
index 0000000..4f89e4b
--- /dev/null
+++ b/challenges139-145/challenge-142.py
@@ -0,0 +1,50 @@
+import sqlite3
+from sqlite3 import Error
+
+
+def create_connection(db):
+    try:
+        conn = sqlite3.connect(db)
+        return conn
+    except Error as e:
+        print(e)
+    return None
+
+
+def show_all_authors(conn):
+    cur = conn.cursor()
+    cur.execute("SELECT * FROM authors")
+    rows = cur.fetchall()
+    for row in rows:
+        print(row)
+
+
+def search_place_birth(conn, place):
+    cur = conn.cursor()
+    cur.execute(str("select books.title, books.published_date, authors.name from authors join books on books.author = authors.name where authors.birth_place = '" + place + "'"))
+    rows = cur.fetchall()
+    for row in rows:
+        print(row)
+    cur.close()
+
+
+def main():
+
+    conn = create_connection('BookInfo.db')
+
+    with conn:
+        print('\n\nMain Menu\n\n\n')
+        print('1) List authors ')
+        print('2) Search place of birth')
+        print('3) Quit')
+        operation_ask = int(input('Enter your selection : '))
+        if operation_ask == 1:
+            show_all_authors(conn)
+        elif operation_ask == 2:
+            ask_place = str(input('Enter place of birth : '))
+            search_place_birth(conn, ask_place)
+        else:
+            print('Invalid input, please try again.')
+
+
+main()
diff --git a/challenges139-145/sqlite-python-tutorial.py b/challenges139-145/sqlite-python-tutorial.py
new file mode 100644
index 0000000..77a8af9
--- /dev/null
+++ b/challenges139-145/sqlite-python-tutorial.py
@@ -0,0 +1,192 @@
+import sqlite3
+from sqlite3 import Error
+
+
+"""""""""""""""""""   CREATING SQLITE DATABASE """""""""""""""""""""
+
+
+def create_connection(db_file):
+    """ create a database connection to the SQLite database
+        specified by db_file
+    :param db_file: database file
+    :return: Connection object or None
+    """
+    try:
+        conn = sqlite3.connect(db_file)
+        return conn
+    except Error as e:
+        print(e)
+    # finally:
+    #     conn.close()
+    return None
+
+
+# if __name__ == '__main__':
+#     create_connection('python-by-example.db')
+
+
+""""""""""""""""     CREATE TABLE       """""""""""""""
+
+
+def create_table(conn, create_table_sql):
+    """ create a table from the create_table_sql statement
+    :param conn: Connection object
+    :param create_table_sql: a CREATE TABLE statement
+    :return:
+    """
+    try:
+        c = conn.cursor()
+        c.execute(create_table_sql)
+        c.close()
+    except Error as e:
+        print(e)
+
+
+def create_project(conn, project):
+    """
+    Create a new project into the projects table
+    :param conn:
+    :param project:
+    :return: project id
+    """
+    sql = ''' INSERT INTO projects(name,begin_date,end_date)
+              VALUES(?,?,?) '''
+    cur = conn.cursor()
+    cur.execute(sql, project)
+    cur.close()
+    return cur.lastrowid
+
+
+def create_task(conn, task):
+    """
+    Create a new task
+    :param conn:
+    :param task:
+    :return:
+    """
+
+    sql = ''' INSERT INTO tasks(name,priority,status_id,project_id,begin_date,end_date)
+              VALUES(?,?,?,?,?,?) '''
+    cur = conn.cursor()
+    cur.execute(sql, task)
+    cur.close()
+    return cur.lastrowid
+
+def select_all_tasks(conn):
+    """
+    Query all rows in the tasks table
+    :param conn: the Connection object
+    :return:
+    """
+    cur = conn.cursor()
+    cur.execute("SELECT * FROM tasks")
+
+    rows = cur.fetchall()
+
+    for row in rows:
+        print(row)
+
+
+def select_task_by_priority(conn, priority):
+    """
+    Query tasks by priority
+    :param conn: the Connection object
+    :param priority:
+    :return:
+    """
+    cur = conn.cursor()
+    cur.execute("SELECT * FROM tasks WHERE priority=?", (priority,))
+
+    rows = cur.fetchall()
+
+    for row in rows:
+        print(row)
+
+
+def update_task(conn, task):
+    """
+    update priority, begin_date, and end date of a task
+    :param conn:
+    :param task:
+    :return: project id
+    """
+    sql = ''' UPDATE tasks
+              SET priority = ? ,
+                  begin_date = ? ,
+                  end_date = ?
+              WHERE id = ?'''
+    cur = conn.cursor()
+    cur.execute(sql, task)
+    cur.close()
+
+
+def delete_task(conn, task):
+    """
+    delete a task
+    :param conn:
+    :param task:
+    :return: null
+    """
+    cur = conn.cursor()
+    cur.execute(str("DELETE FROM tasks WHERE id = " + str(task)))
+    cur.close()
+
+
+def main():
+    database = 'python-by-example.db'
+
+    # sql_create_projects_table = """ CREATE TABLE IF NOT EXISTS projects (
+    #                                     id integer PRIMARY KEY,
+    #                                     name text NOT NULL,
+    #                                     begin_date text,
+    #                                     end_date text
+    #                                 ); """
+    #
+    # sql_create_tasks_table = """CREATE TABLE IF NOT EXISTS tasks (
+    #                                 id integer PRIMARY KEY,
+    #                                 name text NOT NULL,
+    #                                 priority integer,
+    #                                 status_id integer NOT NULL,
+    #                                 project_id integer NOT NULL,
+    #                                 begin_date text NOT NULL,
+    #                                 end_date text NOT NULL,
+    #                                 FOREIGN KEY (project_id) REFERENCES projects (id)
+    #                             );"""
+    #
+    # # create a database connection
+    conn = create_connection(database)
+    # if conn is not None:
+    #     # create projects table
+    #     create_table(conn, sql_create_projects_table)
+    #     # create tasks table
+    #     create_table(conn, sql_create_tasks_table)
+    # else:
+    #     print("Error! cannot create the database connection.")
+
+    with conn:
+            # # create a new project
+            # project = ('Cool App with SQLite & Python', '2015-01-01', '2015-01-30');
+            # project_id = create_project(conn, project)
+            #
+            # # tasks
+            # task_1 = ('Analyze the requirements of the app', 1, 1, project_id, '2015-01-01', '2015-01-02')
+            task_2 = ('Confirm with user about the top requirements', 1, 1, 1, '2015-01-03', '2015-01-05')
+            #
+            # # create tasks
+            # create_task(conn, task_1)
+            create_task(conn, task_2)
+
+
+            # update_task(conn, (2, '2015-01-04', '2015-01-06',2))
+
+            # delete_task(conn, 2)
+
+
+            # print("1. Query task by priority:")
+            # select_task_by_priority(conn, 1)
+            #
+            # print("2. Query all tasks")
+            # select_all_tasks(conn)
+
+if __name__ == '__main__':
+    main()
diff --git a/commands b/commands
index a7decc9..716e83c 100644
--- a/commands
+++ b/commands
@@ -1,3 +1,7 @@
 sudo apt-get install python3-tk
-sudo apt install sqlite
+
+
+------ challenges139-145 ----------
+
+$sudo apt install sqlite
 
diff --git a/useful-link b/useful-link
new file mode 100644
index 0000000..df65cda
--- /dev/null
+++ b/useful-link
@@ -0,0 +1,4 @@
+for CSV challenges
+
+------ challenges139-145 ----------
+- http://www.sqlitetutorial.net/sqlite-python/