从包含str和int python的列表中查找最大int值 [英] Find maximum int value from list which contain both str and int python

问题描述

要从组合列表中找到max，如下所示:

Looking to find max from the combine list as follows:

['filename1', 1696, 'filename2', 5809,....]

我尝试了以下操作:

max(['filename1', 1696, 'filename2', 5809,....])

那使我回到TypeError: '>' not supported between instances of 'int' and 'str'.任何建议都会有所帮助.我想要的是从上述列表中找到max整数值.

that return me TypeError: '>' not supported between instances of 'int' and 'str'. Any suggestion would help. What I want is to find the max integer value from the list above mentioned.

推荐答案

使用list comprehension和isinstance提取int，然后使用max.

Use list comprehension with isinstance to extract the int and then use max.

例如:

f = ['filename1', 1696, 'filename2', 5809]
print(max([i for i in f if isinstance(i, int)]))
#or generator
print(max((i for i in f if isinstance(i, int))))    #Better Option

输出:

5809
5809

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