fake_fastnumbers.py 文件源码

def fast_float(x, regex_matcher=float_re.match, uni=unicodedata.numeric):
    """Convert a string to a float quickly"""
    if type(x) in (int, long, float):
        return float(x)
    elif regex_matcher(x):
        return float(x.strip())
    elif type(x) == unicode and len(x) == 1 and uni(x, None) is not None:
        return uni(x)
    else:
        return x