For a list of file names file_names
, I try to use code below to filter file names not containing foo
or bar
:
file_names = ['foo_data.xlsx', 'bar_data.xlsx', 'data.xlsx'] subs = ['foo', 'bar'] for file_name in file_names: for sub in subs: if sub not in file_name: print(file_name)
Output:
foo_data.xlsx bar_data.xlsx data.xlsx data.xlsx
But it’s not working out, it should return data.xlsx
.
Meanwhile, it works for containing case:
file_names = ['foo_data.xlsx', 'bar_data.xlsx', 'data.xlsx'] subs = ['foo', 'bar'] for file_name in file_names: for sub in subs: if sub in file_name: print(file_name)
Out:
foo_data.xlsx bar_data.xlsx
Does someone could help to explain what’s error in my code and how to fix it? Thanks.
Reference:
Does Python have a string ‘contains’ substring method?
Advertisement
Answer
Since you don’t want any sub
to be in the file names; one way is to wrap the inner loop with all
:
for file_name in file_names: if all(sub not in file_name for sub in subs): print(file_name)
Output:
data.xlsx