ValueError: invalid literal for int() with base 10: ''

有时候需要用int()函数转换字符串为整型，但是切记int()只能转化由纯数字组成的字符串，如下例：

Python 3.7.0 (v3.7.0:1bf9cc5093, Jun 27 2018, 04:59:51) [MSC v.1914 64 bit (AMD64)] on win32
Type "copyright", "credits" or "license()" for more information.

str1='214567'
str2=''
str3='fsdf214356'
int(str1)
214567
int(str2)
Traceback (most recent call last):
File "<pyshell#4>", line 1, in <module>
int(str2)
ValueError: invalid literal for int() with base 10: ''#不可转换空字符串为整型
int(str3)
Traceback (most recent call last):
File "<pyshell#5>", line 1, in <module>
int(str3)
ValueError: invalid literal for int() with base 10: 'fsdf214356'#不可转换非纯数字组成的字符串

非纯数字组成的字符串强转为整型会报错：ValueError: invalid literal for int() with base 10

转载于https://www.cnblogs.com/helloworldcc/p/9681546.html