Would like to split fields of filenames inside a folder

Question

getting error while splitting via
first, second, third = filename.split('_')
value error: too many values to unpack
please note that I am splitting using for loop inside a folder

Answer 1

filename.split('_') returns too many arguments for 'first,second,third' to handle

just use one variable:

fnames=filename.split('_')

now fnames is a list of field names which were seperated by '_'

Answer 2

try using:
while ..... :
fnames=filename.split('_')
try:
f3=fnames[2]
except IndexError:
# print or something

Answer 3

then it is a problem
since there is no guarantee about the amount of seperators

and is there a problem with it being a list?

Answer 4

ahh i see
the issue is exactly as you said
on one file there might be correct amount of '_'
but on another could be more or less

you can try to get access to the 3rd field

fnames=filename.split('_')
f3=fnames[2]
.....

problem here is if the amount of '_' is lower than expected....

Answer 5

well...yup

Answer 6

thanks burey
but I want to store the field in different variables
my intention is to make the third field of file name as first field https://youtu.be/ve2pmm5JqmI
I think the issue here is the different no of field of different filenames

Answer 7

you are suggesting to leave it as fnames=filename.split('_') and then retrieve fields as f3=fnames[2] or like f2 etc..

Answer 8

burey,
is there anyway for avoiding error and pass to next filename in the for loop like except