common.py 文件源码

def randomStr(length=4, lowercase=False, alphabet=None, seed=None):
    """
    Returns random string value with provided number of characters

    >>> random.seed(0)
    >>> randomStr(6)
    'RNvnAv'
    """

    choice = random.WichmannHill(seed).choice if seed is not None else random.choice

    if alphabet:
        retVal = "".join(choice(alphabet) for _ in xrange(0, length))
    elif lowercase:
        retVal = "".join(choice(string.ascii_lowercase) for _ in xrange(0, length))
    else:
        retVal = "".join(choice(string.ascii_letters) for _ in xrange(0, length))

    return retVal