python-4 类型转换

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隐性类型转换

>>> 123+1.1232
124.1232

>>> 123+True
124

>>> 123+False
123

显性类型转换

>>> int(1.23)
1
>>> float(1)
1.0

乘方运算
int范围大于float
>>> float(9999 ** 9999)
Traceback (most recent call last):
  File "<pyshell#0>", line 1, in <module>
    float(9999 ** 9999)
OverflowError: int too large to convert to float
>>>