• 1 Post
  • 33 Comments
Joined 3 years ago
Cake day: July 7th, 2023
  • UlrikHD@programming.devtoPython@programming.dev•Problems parsing a string with pyparsing
    31·
    3 years ago

    Personally I would recommend to use regex instead for parsing, which would also allow you to more easily test your expressions. You could then get the list as

    import re
result = re.findall(r'[\w_]+|\S',  yourstring)  # This will preserve ULLONG_MAX as a single word if that's what you want

    As for what’s wrong with your expressions:

    First expression: Once you hit (, OneOrMore(Char(printables)) will take over and continue matching every printable char. Instead you should use OR (|) with the alphanumerical first for priority OneOrMore(word | Char(printables))

    Second expression. You’re running into the same issue with your use of +. Once string.punctuation takes over, it will continue matching until it encounters a char that is not a punctuation and then stop the matching. Instead you can write:

    parser = OneOrMore(Word(alphanums) | Word(string.punctuation))
result = parser.parseString(yourstring)

    Do note that underscore is considered a punctutation so ULLONG_MAX will be split, not sure if that’s what you want or not.

  • UlrikHD@programming.devtoPython@programming.dev•Unable to include data files in python package with setuptools.English
    21·
    3 years ago

    I don’t have any experience with pipx and personally prefer to just skip the .toml and place the whole pyprojectsetup in setup.py.

    With that method, I would write inside setup()

    packages=find_packages()  # Include every python packages
package_data={  # Specify additional data files
    'yourpackagename': [
        'config/*'
        etc...
    ]
}

    This would however require you to have a package folder which all your package files/folders are inside, meaning the top level repo folder should not have any files or other folders that you want to distribute. Your MANIFEST.in looks fine.

  • UlrikHD@programming.devtoPython@programming.dev•Need help to crop border from a bunch of GIFsEnglish
    1·
    3 years ago

    As others have suggested, ffmpeg is a great cli tool. If you aren’t comfortable with the terminal you can do it via python like this:

    import os
import sys
import subprocess


def crop_media(file_name: str, w: int, h: int, x: int, y: int, new_dir: str) -> None:
    try:
        subprocess.run(f'ffmpeg -i "{file_name}" -vf "crop={w}:{h}:{x}:{y}" temp.gif -y',
                           shell=True, check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
        os.rename('temp.gif', os.path.join(new_dir, file_name))
    # Print the error and continue with other gifs, remove try block if you want a complete stop
    except subprocess.CalledProcessError as e:
        print(e)
    except KeyboardInterrupt:
        print('KeyboardInterrupt, cleaning up files...')
        os.remove('temp.gif')
        sys.exit(0)


def crop_directory(directory: str, w: int, h: int, x: int, y: int, new_dir: str) -> None:
    for root, _, files in directory:
        for file in files:
            if not file.endswith('.gif'):
                continue
            if os.path.isfile(os.path.join(new_dir, file)):
                print(f'{file} already exists in {new_dir}, skipping...')
                continue

            file_path = os.path.normpath(os.path.join(root, file))
            crop_media(file_path, w, h, x, y, new_dir)


if __name__ == '__main__':
    width = 0
    height = 0
    x_offset = 0
    y_offset = 0
    gif_directory = ''
    new_directory = ''
    crop_directory(gif_directory, width, height, x_offset, y_offset, new_directory)

    This should go through every file in the directory and subdirectories and call the ffmpeg command on each .gif. With new_directory you can set a directory to store every cropped .gif. The ffmpeg command is based on johnpiers suggestion.

    The script assumes unique filenames for each gif and should work with spaces in the filenames. If they aren’t unique, you can just remove the new_directory part, but you will then lose the original gif that you cropped.

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