The original List is this
a=['="1111"', '="2222"', '="3333"', '="4444"']
I try this
b=[b.strip('=') for b in a]
Then i got this
[ ' "1111" ', ' "2222" ', ' "3333" ', ' "4444" ']
I have tried some way to remove outside ' ',but I still can not make it
I want to get
["1111","2222","3333","4444"]
Technic -1 : Using strip():
>>> a=['="1111"', '="2222"', '="3333"', '="4444"']
>>> b=[b.strip('=').strip('"') for b in a]
>>> b
['1111', '2222', '3333', '4444']
Technic -2 : Using replace() :
>>> a=['="1111"', '="2222"', '="3333"', '="4444"']
>>> b=[b.replace("=","").replace('"',"") for b in a]
>>> b
['1111', '2222', '3333', '4444']
Above both Technics are suitable for simple and small list. If we follow the same approach for the list containing 1000 elements, it will iterate over 1000 elements. So for avoiding, you can follow Technic - 3:
>>> a=['="1111"', '="2222"', '="3333"', '="4444"']
>>> b = ','.join(a).replace("'","").replace('"',"").replace("=","").split(",")
>>> b
['1111', '2222', '3333', '4444']
or
>>> import re
>>> mystring = ','.join(a)
>>> re.sub('[^A-Za-z0-9,]+','',mystring).split(",")
['1111', '2222', '3333', '4444']
str.strip() allows you to trim by multiple characters:
a = ['="1111"', '="2222"', '="3333"', '="4444"']
b = [i.strip('="') for i in a]
print(b)
The output:
['1111', '2222', '3333', '4444']
