Read password from external file and retrun as string. The file should
    contain just single line. Prevents hard-coding password anywhere in this
    script. IMPORTANT! Password is stored as plain text! Do NOT use with your
    personal account!"

    Args:
        pass_file (str): /path/to/pass_file

def read_passwd_file(pass_file):
    """Read password from external file and retrun as string. The file should
    contain just single line. Prevents hard-coding password anywhere in this
    script. IMPORTANT! Password is stored as plain text! Do NOT use with your
    personal account!"

    Args:
        pass_file (str): /path/to/pass_file
    """
    with open(pass_file) as fin:
        passwd = fin.read().strip()
    return passwd