A project line counter in python

lines.py

#!/usr/bin/python3
import os
import json

path = '../'

fileExtentions = [
    'ts',
    'js',
    'json',
    'html',
    'css',
    'scss',
    'sass',
    'svg',
    'sh',
]
fileExtentionsNames = {
    'ts': 'TypeScript',
    'js': 'JavaScript',
    'json': 'JavaScript Object',
    'html': 'HTML',
    'css': 'CSS',
    'scss': 'SCSS',
    'sass': 'SASS',
    'svg': 'SVG',
    'sh': 'ShellScript',
}
excludeFile = ['package-lock.json']
excludeDir = [
    'node_modules',
    'dist',
    '.vscode',
    '.git',
    'trash',
]

files = []
total_lines = 0

# initialize states
stats = {file: 0 for file in fileExtentions}


def main():
    global fileExtentions
    global excludeFile
    global excludeDir
    global files
    global total_lines
    global stats

    excludeDir = list(
        map(lambda dir: os.path.join(path, dir), excludeDir)
    )

    # r=root, d=directories, f = files
    for r, d, f in os.walk(path):
        if(True in map(lambda dir: r.startswith(dir), excludeDir)):
            continue

        for file in f:
            fname = file.split('/')[-1]
            fext = fname.split('.')[-1]
            if fext in fileExtentions and fname not in excludeFile:
                file_lines = sum(
                    1 for line in open(
                        os.path.join(r, file)
                    )
                )
                stats[fext] += file_lines
                total_lines += file_lines


if __name__ == '__main__':
    main()

    # create statistics
    stats = {
        fext: {
            'language': fileExtentionsNames[fext],
            'lines': stats[fext],
            "%": '%.2f%%' % (stats[fext] / total_lines * 100),
        }
        for fext in fileExtentions
    }

    # delete empty lines
    toDelete = []
    for lang in stats:
        if(not stats[lang]['lines']):
            toDelete.append(lang)
    for deleteIt in toDelete:
        del stats[deleteIt]

    # show results
    print("Linhas:", total_lines)
    print(
        "Statistics:",
        json.dumps(
            stats,
            indent=2,
            sort_keys=True
        )
    )