fake_fastnumbers.py 文件源码

def fast_int(x, regex_matcher=int_re.match, uni=unicodedata.digit):
    """\
    Convert a string to a int quickly, return input as-is if not possible.
    """
    if type(x) in (int, long, float):
        return int(x)
    elif regex_matcher(x):
        return int(x.strip().rstrip('Ll'))
    elif type(x) == unicode and len(x) == 1 and uni(x, None) is not None:
        return uni(x)
    else:
        return x