https://github.com/learnbyexample/py_regular_expressions/tree/master/interactive_exercises

Skip to content
 
Sign up

  * Why GitHub?
      + Features -
      + Mobile -
      + Actions -
      + Codespaces -
      + Packages -
      + Security -
      + Code review -
      + Issues -
      + Integrations -
      + GitHub Sponsors -
      + Customer stories -
  * Team
  * Enterprise
  * Explore
      + Explore GitHub -
      + Learn and contribute
      + Topics -
      + Collections -
      + Trending -
      + Learning Lab -
      + Open source guides -
      + Connect with others
      + The ReadME Project -
      + Events -
      + Community forum -
      + GitHub Education -
      + GitHub Stars program -
  * Marketplace
  * Pricing
      + Plans -
      + Compare plans -
      + Contact Sales -
      + Education -

[                    ] 

  *  
    #
    In this repository All GitHub |
    Jump to |

  * No suggested jump to results

  *  
    #
    In this repository All GitHub |
    Jump to |
  *  
    #
    In this user All GitHub |
    Jump to |
  *  
    #
    In this repository All GitHub |
    Jump to |

Sign in
Sign up
{{ message }}

learnbyexample / py_regular_expressions Public

  * Notifications
  * Star 972
  * Fork 139
  * 

  * Code
  * Issues 1
  * Pull requests 0
  * Actions
  * Projects 0
  * Wiki
  * Security
  * Insights

More

  * Code
  * Issues
  * Pull requests
  * Actions
  * Projects
  * Wiki
  * Security
  * Insights

master
Switch branches/tags
[                    ]
Branches Tags
Could not load branches
Nothing to show
Loading
{{ refName }} default View all branches
Could not load tags
Nothing to show
{{ refName }} default
Loading
View all tags
py_regular_expressions/interactive_exercises/
Go to file
py_regular_expressions/interactive_exercises/

Latest commit

@learnbyexample
learnbyexample PDF/EPUB versions free till 2021-12-31
...
5ff97ac Nov 30, 2021
PDF/EPUB versions free till 2021-12-31
5ff97ac

Git stats

  * History

Files

Permalink
Failed to load latest commit information.
Type
Name
Latest commit message
Commit time
. .
README.md
PDF/EPUB versions free till 2021-12-31
Nov 30, 2021
questions.json
added more questions, updated README
Nov 23, 2021
regex_practice.py
added more questions, updated README
Nov 23, 2021
regex_practice_example.png
added solution button, improved styling
Nov 15, 2021
representation.png
added more questions, updated README
Nov 23, 2021
visual_string.png
added more questions, updated README
Nov 23, 2021
About Instructions Notes TODO

README.md

 About

A GUI app written in tkinter to help you practice Python regular
expressions. The script has been tested for python3.8 and above
versions on Linux. This is likely to be functional on Windows/Mac as
well.

The following functions are currently supported:

  * re.search()
  * re.sub()
  * re.findall()
  * re.split()

The app automatically checks and highlights test strings based on
user input. Here's a screenshot:

                            [regex_prac]

 Instructions

Download regex_practice.py and questions.json or clone this repo as
shown below.

$ git clone --depth=1 https://github.com/learnbyexample/py_regular_expressions

$ cd py_regular_expressions/interactive_exercises/

# use py instead of python3 for Windows
$ python3 regex_practice.py

Your progress will be saved in a new file named user_progress.json.
If you close the app and launch it again, already solved questions
will be automatically skipped.

There are 75 questions in total. You can pass an integer value as
command-line argument to directly open that particular question (this
would also be skipped if it is already answered).

# use py instead of python3 for Windows
# opens 50th question
$ python3 regex_practice.py 50

 Notes

  * Use appropriate anchors based on whether string or line is used
    in the question description.
  * By default, visual string radio option is active. It shows the
    test strings in the same way you'd see from the output of print()
    function. In case of re.split() and re.findall() functions, the
    output column shows the list return value. The representation
    radio choice shows the test strings using the repr() function,
    this is useful when the test strings contain whitespace
    characters.

Here's a screenshot to show the difference between these two options:

                            [visual_str]

                            [representa]

  * Backticks are used in the question descriptions to highlight
    search and replace terms.
  * User input entered via Pattern and Replace boxes will always be
    treated as raw-strings. For this reason, raw-strings are used for
    the reference solutions as well.
  * These exercise questions have been adapted from my Python re
    (gex)? ebook (free to read online and PDF/EPUB versions are
    currently free to download till 31-Dec-2021). See Exercises.md
    for all the exercise questions from this book.

 TODO

  * Highlight portion of test strings that match the user pattern and
    show live output -- these features will help in debugging
    solutions
  * Add support for arguments like count for re.sub, maxsplit for
    re.split, etc
  * Add support for re.subn, re.fullmatch, re.finditer, re.Match, etc
  * Add support for third-party regex module
  * Refactor
  * Add tests?
  * Etc

  * (c) 2021 GitHub, Inc.
  * Terms
  * Privacy
  * Security
  * Status
  * Docs

 

  * Contact GitHub
  * Pricing
  * API
  * Training
  * Blog
  * About

You can't perform that action at this time.
You signed in with another tab or window. Reload to refresh your
session. You signed out in another tab or window. Reload to refresh
your session.