import os
import pathlib
import charset_normalizer

if __name__ == "__main__":
    file_path = r"C:\test.txt"
    if not file_path or not os.path.isfile(file_path):
        raise FileNotFoundError(file_path)

    with open(file_path, 'r', encoding='cp1251', errors='ignore') as data_stream:
        result = data_stream.read().strip()[0:100]
        data_stream.close()
        print("'with open' result:")
        print("\t" + result.replace("\n", "\n\t"))

    results = charset_normalizer.from_path(pathlib.Path(file_path))
    result = str(results.best()).strip()[0:100]
    print("'from_path' result:")
    print("\t" + result.replace("\n", "\n\t"))

    cp_isolation = ['cp866', 'cp1251', 'utf_8', 'utf_8_sig']
    results = charset_normalizer.from_path(pathlib.Path(file_path), cp_isolation=cp_isolation)
    result = str(results.best()).strip()[0:100]
    print("'from_path with cp_isolation' result:")
    print("\t" + result.replace("\n", "\n\t"))