Python教程：int()函数的用法分析

<p><span>>>> help(int)  <br/>Help on class int in module __builtin__:  <br/>class int(object)  <br/> | int(x[, base]) -> integer  <br/> |   <br/> | Convert a string or number to an integer, if possible. A floating point  <br/> | argument will be truncated towards zero (this does not include a string  <br/> | representation of a floating point number!) When converting a string, use  <br/> | the optional base. It is an error to supply a base when converting a  <br/> | non-string. If base is zero, the proper base is guessed based on the  <br/> | string content. If the argument is outside the integer range a  <br/> | long object will be returned instead.  <br/>>>> int(12.0)  <br/>12<br/></span></p>