Content-Type: text/x-zim-wiki Wiki-Format: zim 0.4 Creation-Date: 2012-12-02T10:31:10+08:00 ====== int ====== Created Sunday 02 December 2012 In [12]: lst = '123\n' //如果字符串中包含__空字符(如空格, \t, \v, \f, \n, \r)等__,int(), float()等函数仍然有效。 In [13]: lst Out[13]: '123\n' __In [14]: int(lst)__ __Out[14]: 123__ In [15]: lst = '123\n\t' In [16]: lst Out[16]: '123\n\t' In [18]: int(lst) Out[18]: 123 In [19]: lst = '123\nstr' //字符串中包含除了数字外的非空字符,转换时提示错误。 In [20]: lst Out[20]: '123\nstr' In [21]: int(lst) --------------------------------------------------------------------------- ValueError Traceback (most recent call last) in () ----> 1 int(lst) __ValueError:__ invalid literal for int() with **base 10**: '123\nstr' In [22]: