parser.py 文件源码

def _parse_number(self):
        t = self._next_token()
        if t.type != TokenType.NUMBER:
            raise ParseError("Expected number, got '%s'" % (t.value,))
        if "." in t.value:
            return float(t.value)
        elif "e" in t.value.lower():
            return float(t.value)
        elif t.value.lower().startswith("0x"):
            return int(t.value, 16)
        elif t.value.lower().startswith("0b"):
            return int(t.value, 2)
        else:
            return int(t.value)