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DisCapTy help you generate obfuscated images, leaving your code easy.

Project description


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DisCapTy is a highly type hinted Python module to generate Captcha images without struggling your mind on how to make your own. Everyone can use it!



DisCapTy is available on PyPi!

pip3 install discapty

To use DisCapTy, you need a Python version equal or greater to 3.7 and below 3.11.

Clone & Test the project

This project is dependant of Poetry, a dependency management tool. You are most likely going to require this tool to correctly interact with the project & its dependencies, check out Poetry's documentation for how to install it.

To clone the repository: git clone

To install dependencies: poetry install

To run tests: poetry run python -m unittest

Creating Captcha

For DisCapTy, a Captcha is simply a code with any possible objects that can be returned, for example, it is one code (Like "12345") with an image (Usually a PIL.Image.Image object) This is because DisCapTy uses the concept of generators that are used to generate a captcha from a given code, and it can return anything.

DisCapTy comes with 3 builtin generators:

  • TextGenerator : Text based captcha
  • WheezyGenerator : Image based captcha
  • ImageGenerator : Image based captcha

Creating Captcha manually

import discapty

def generate_a_captcha(initial_input: str) -> discapty.Captcha:
    # This generator returns an obfuscated text.
    captcha_for_user = discapty.TextGenerator().generate(initial_input)
    # Create a Captcha object, the first argument is the clear code, the second is the obfuscated code. Anything goes.
    return discapty.Captcha(initial_input, captcha_for_user)

# Generate your Captcha.
captcha = generate_a_captcha("12345")

# Show the obfuscated code. See for more information on this object.

Checking user's input

import discapty

# Generate your Captcha.
captcha: discapty.Captcha = generate_a_captcha("12345")

# This is your user's input here
user_input: str = '12345'

if captcha.check(user_input) is True:
    # The user input is correct
    # The user input is incorrect

What's great with the .check method is that you can specify if you need to remove space in the user's input and/or check casing.

Creating Captcha manually is not a recommended way, because DisCapTy comes with its opinionated challenge runner & is inefficient anyway.

Create a Challenge

import discapty

challenge = discapty.Challenge(discapty.TextGenerator(), retries=3)

captcha = challenge.begin()

# We cannot provide typehint here, `captcha` is a `typing.Any` and cannot help you, it'll be your
# job to know what you'll get as a captcha.
user_input: str = get_user_input()

is_correct: bool = challenge.check(user_input)
# If the user's input is correct, the challenge ends, if not, `challenge.attempted_tries` will get
# +1, and if it is greater than the retries that has been set, then an error is raised when using
# `.check`

Please see the documentation for more information on how the library work.


You can join my Discord server for any help:

DisCapTy is an open-source project distributed under the MIT license: PyPI - License

DisCapTy uses the Roboto font as default font. This font is licensed under Apache-2.0.

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