什么是回车

#!python3

import sysimport time

def do_something():    pass

def bar_update(rate):    print("当前进度: {:3d}%".format(rate), "▋" * (rate // 2), end="r")    sys.stdout.flush()    time.sleep(0.05)



if __name__ == '__main__':    n = 0    while True:        do_something()        bar_update(n)        n += 1        if n == 100:            n = 0            print('r'+' '*65, end='r')

def check_crlf_ending(file_path):    with open(file_path, 'rb') as file:        line = file.read(1000)        # print(repr(line))        if b'rn' in line or b'rx00n' in line:            return 'CRLF'

        if b'r' in line:            return 'CR'

        return 'LF'

# python check_file_encoding.py *import chardetimport argparseimport globimport osimport platformimport sys



def change_default_encoding():    '''判断是否在 windows git-bash 下运行，是则使用 utf-8 编码'''    if platform.system() == 'Windows':        terminal = os.environ.get('TERM')        if terminal and 'xterm' in terminal:            sys.stdout.reconfigure(encoding='utf-8')



def is_file(file_path):    return os.path.isfile(file_path)



def detect_file_encoding(file_path):    with open(file_path, 'rb') as file:        detector = chardet.universaldetector.UniversalDetector()        for line in file:            detector.feed(line)            if detector.done:                break        detector.close()    return detector.result['encoding']



def check_crlf_ending(file_path):    with open(file_path, 'rb') as file:        line = file.read(1000)        # print(repr(line))        if b'rn' in line or b'rx00n' in line:            return 'CRLF'

        if b'r' in line:            return 'CR'

        return 'LF'



def check_file_encodings(files):    for file_path in files:        if is_file(file_path):            encoding = detect_file_encoding(file_path)            ending = check_crlf_ending(file_path)            formatted_file_path = "{:<20}".format(file_path)            print(                f"{formatted_file_path}t编码: {encoding if encoding else '无法确定'}t换行: {ending if ending else '无法确定'}")



def main():    parser = argparse.ArgumentParser(description='Check file encodings')    parser.add_argument(        'files', nargs='+', help='File paths to check. You can use * for wildcard expansion.')

    args = parser.parse_args()

    # 使用 glob 模块进行通配符扩展    expanded_files = [file_path for pattern in args.files for file_path in glob.glob(        pattern) if is_file(file_path)]

    check_file_encodings(expanded_files)



if __name__ == "__main__":    change_default_encoding()    main()