unicode.py 文件源码

def blockname(ch):
    """Return the Unicode block name for ch, or None if ch has no block.

    >>> blockname(u'a')
    'Basic Latin'
    >>> blockname(unichr(0x0b80))
    'Tamil'
    >>> block(unichr(2048))
    None
    """

    assert isinstance(ch, text_type) and len(ch) == 1, repr(ch)
    cp = ord(ch)
    i = bisect_right(_starts, cp) - 1
    end = _ends[i]
    if cp > end:
        return None
    return _names[i]