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ValueError: invalid literal for int() with base 10: ‘abc‘

参考ValueError: invalid literal for int() with base 10: ‘abc‘ - 云+社区 - 腾讯云

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

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