Translated the "Description" of "Introduction to Python" into Japanese

Translations/Delete-md-File.sh

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+#!/bin/bash
+echo
+echo "----------------"
+echo "Warning: The following files will be deleted by the script."
+echo "Delete ->  ~/PycharmProjects/'Introduction to Python'/----/task.md"
+echo 
+read -p "Is it OK ? (y/N): " yn
+case "$yn" in [yY]*) ;; *) echo "abort." ; exit ;; esac
+echo
+cd ~/PycharmProjects/'Introduction to Python'/
+rm 'Classes and objects/Class and Instance Variables/task.md'
+rm 'Classes and objects/Definition/task.md'
+rm 'Classes and objects/Special __init__ method/task.md'
+rm 'Classes and objects/The self parameter/task.md'
+rm 'Classes and objects/Update variable/task.md'
+rm 'Classes and objects/Variable access/task.md'
+rm 'Classes and objects/__str__ vs __repr__/task.md'
+rm 'Condition expressions/Boolean operators order/task.md'
+rm 'Condition expressions/Boolean operators/task.md'
+rm 'Condition expressions/Else and elif parts in if statement/task.md'
+rm 'Condition expressions/If statement/task.md'
+rm 'Data structures/Dictionaries/task.md'
+rm 'Data structures/Dictionary keys() and values()/task.md'
+rm 'Data structures/In keyword/task.md'
+rm 'Data structures/Join method/task.md'
+rm 'Data structures/List items/task.md'
+rm 'Data structures/Lists introduction/task.md'
+rm 'Data structures/Lists operations/task.md'
+rm 'Data structures/Nested Lists/task.md'
+rm 'Data structures/Tuples/task.md'
+rm 'File input output/Open file/task.md'
+rm 'File input output/Read file/task.md'
+rm 'File input output/What next/task.md'
+rm 'File input output/Write to file/task.md'
+rm 'Functions/Args and kwargs/task.md'
+rm 'Functions/Default parameters/task.md'
+rm 'Functions/Definition/task.md'
+rm 'Functions/Keyword Arguments/task.md'
+rm 'Functions/Parameters and call arguments/task.md'
+rm 'Functions/Recursion/task.md'
+rm 'Functions/Return value/task.md'
+rm 'Introduction/About/task.md'
+rm 'Introduction/Comments/task.md'
+rm 'Introduction/Course View/task.md'
+rm 'Introduction/Editor/task.md'
+rm 'Introduction/Navigating Around/task.md'
+rm 'Introduction/Our first program/task.md'
+rm 'Introduction/Task Description/task.md'
+rm 'Loops/Break keyword/task.md'
+rm 'Loops/Continue keyword/task.md'
+rm 'Loops/Else with loops/task.md'
+rm 'Loops/For loop/task.md'
+rm 'Loops/List Comprehension/task.md'
+rm 'Loops/Loop over a string/task.md'
+rm 'Loops/Nested List Comprehension/task.md'
+rm 'Loops/Nested for Loop/task.md'
+rm 'Loops/While loop/task.md'
+rm 'Modules and packages/Built-in modules/task.md'
+rm 'Modules and packages/Executing modules as scripts/task.md'
+rm 'Modules and packages/From import/task.md'
+rm 'Modules and packages/Import module/task.md'
+rm 'Modules and packages/Packages/task.md'
+rm 'README.md'
+rm 'Strings/Basic string methods/task.md'
+rm 'Strings/Character escaping/task.md'
+rm 'Strings/Concatenation/task.md'
+rm 'Strings/F-strings/task.md'
+rm 'Strings/In operator/task.md'
+rm 'Strings/String formatting/task.md'
+rm 'Strings/String indexing/task.md'
+rm 'Strings/String length/task.md'
+rm 'Strings/String multiplication/task.md'
+rm 'Strings/String negative indexing/task.md'
+rm 'Strings/String slicing/task.md'
+rm 'Variables/Arithmetic operators/task.md'
+rm 'Variables/Assignments/task.md'
+rm 'Variables/Boolean operators/task.md'
+rm 'Variables/Comparison operators/task.md'
+rm 'Variables/Type conversion/task.md'
+rm 'Variables/Undefined variable/task.md'
+rm 'Variables/Variable definition/task.md'
+rm 'Variables/Variable types/task.md'

Translations/README-ja.md

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+## 「Introduction to Python」（Python入門）コースの「説明」を日本語に翻訳しました:
+
+### 説明:
+
+表示される説明は英語です。  
+日本人が Python を学びやすいように、日本語に翻訳しました。
+
+---
+
+### セットアップ手順:
+
+
+#### 1. 「PyCharm」に下記のプラグインをインストールしておきます:
+
+- 「Edu Tools」  
+- 「Japanese Language Pack」
+
+
+#### 2. 「PyCharm」の「Courses」タブで「Introduction to Python」コースを選択し、「Start」をクリックします:
+
+→「~/PycharmProjects/'Introduction to Python'/」フォルダが作成されます。
+
+これはすでに行われているはずです。
+
+#### 3. 念のため、元のファイルを保存してください:
+
+```
+$ cp -r ~/PycharmProjects ~/PycharmProjects-ORG
+```
+
+#### 4. 作業に使用するファイルを確認します:
+
+次のフォルダに添付ファイルがあるとします:
+
+```
+$ cd ~/PycharmProjects/'Introduction to Python'/Translations/
+$ ls -1
+Delete-md-File.sh
+README-ja.md
+README.md
+ja.patch
+screenshot-ja.jpg
+```
+
+#### 5. シェルスクリプトを実行可能に設定します:
+
+```
+$ chmod +x ./Delete-md-File.sh
+```
+
+#### 6. 対象となるファイルを削除するシェルスクリプトを実行します:
+
+```
+$ cd ~/PycharmProjects/'Introduction to Python'/
+$ ./Translations/Delete-md-File.sh
+```
+
+→パッチファイルを適用する際の以下のエラーを回避します:  
+"Hunk #1 FAILED at 1 (different line endings)."
+
+および、新しいファイルにすることで、パッチを適用しやすくします。
+
+#### 7. パッチファイルを適用します:
+
+```
+$ patch -p1 <Translations/ja.patch
+```
+
+→新しいmdファイルが各ファイル階層に作成されます。
+
+---
+
+### 添付ファイル:
+
+(1). 「README.md」 : セットアップ手順。このファイル。  
+(2). 「README-ja.md」 : セットアップ手順（日本語版）  
+(3). 「screenshot-ja.jpg」 : 「Introduction to Python」を日本語に翻訳した画面  
+(4). 「Delete-md-File.sh」  : 対象となるファイルを事前に削除するシェルスクリプト  
+(5). 「ja.patch」  : パッチファイル

Translations/README.md

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+## Translated the "Description" of "Introduction to Python" into Japanese:
+
+### description:
+
+The explanation displayed is in English. I translated it into Japanese to make it easier for people living in Japan to learn Python.
+
+---
+
+### Setup procedure:
+
+#### 1. Install the following plug-in in "PyCharm":
+
+- "Edu Tools"  
+- "Japanese Language Pack"
+
+#### 2. In PyCharm's "Courses" tab, select "Introduction to Python" and click "Start":
+
+-> A "~/PycharmProjects/'Introduction to Python'/" folder will be created.
+
+This should have already been done.
+
+#### 3. Save the original file just in case:
+
+```
+$ cp -r ~/PycharmProjects ~/PycharmProjects-ORG
+```
+
+#### 4. Check the files used for work:
+
+Suppose you have attachments in the following folders:
+
+```
+$ cd ~/PycharmProjects/'Introduction to Python'/Translations/
+$ ls -1
+Delete-md-File.sh
+README-ja.md
+README.md
+ja.patch
+screenshot-ja.jpg
+```
+
+#### 5. Set the shell script to be executable:
+
+```
+$ chmod +x ./Delete-md-File.sh
+```
+
+#### 6. Run a shell script that deletes the target file:
+
+```
+$ cd ~/PycharmProjects/'Introduction to Python'/
+$ ./Translations/Delete-md-File.sh
+```
+
+-> Avoid errors when applying patch files:  
+"Hunk #1 FAILED at 1 (different line endings)."
+
+And make it a new file to make it easier to apply.
+
+#### 7. Apply patch file:
+
+```
+$ patch -p1 <Translations/ja.patch
+```
+
+-> A new md file is created in each file hierarchy.
+
+#### 8. Start and check:
+
+Double-click on the issue name in the tree on the left to see the translated description.
+
+---
+
+### Attachment:
+
+(1). "README.md" : Setup procedure.  
+(2). "README-ja.md" : Setup procedure (Japanese version)  
+(3). "screenshot-ja.jpg" : Screen using "Introduction to Python" translated into Japanese  
+(4). "Delete-md-File.sh"  : Shell script that deletes the target file  
+(5). "ja.patch"  : patch file:
+