int()是Python的一个内部函数
Python系统帮助里面是这么说的
- >>> help(int)
- Help on class int in module __builtin__:
- class int(object)
- | int(x[, base]) -> integer
- |
- | Convert a string or number to an integer, if possible. A floating point
- | argument will be truncated towards zero (this does not include a string
- | representation of a floating point number!) When converting a string, use
- | the optional base. It is an error to supply a base when converting a
- | non-string. If base is zero, the proper base is guessed based on the
- | string content. If the argument is outside the integer range a
- | long object will be returned instead.
- >>> int(12.0)
- 12
int()函数可以将一个数转化为整数
- >>> int('12',16)
- 18
这里有两个地方要注意：1）12要以字符串的形式进行输入，如果是带参数base的话
2）这里并不是将12转换为16进制的数，而是说12就是一个16进制的数，int()函数将其用十进制数表示，如下
- >>> int('0xa',16)
- 10
- >>> int('10',8)
- 8