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[英]How to remove all string elements from a list of integers, with strings next to integers [Python]
[英]How to remove strings from a list of list of integers?
我有一个整数和字符串列表的列表,我想删除这些字符串。 我该怎么做呢?
a = [[1,2,3,4,5,'test'], [6,7,84,3,2,4,'nan'], [4,1,2,4,5,42,4,'test']]
我已经尝试了以下
for i in a:
for e in i:
if isinstanece(e, str) == True:
a.remove(e)
嵌套列表推导式将实现您的需求。
[[val for val in lst if isinstance(val,int)] for lst in a]
编辑:您还可以检查该值是否不是字符串:
[[val for val in lst if not isinstance(val,str)] for lst in a]
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