How to avoid case sensitivity in Python

Question

I have this code and want to compare two lists.

list2= [('Tom','100'),('Alex','200')]
list3= [('tom','100'),('alex','200')]

non_match = []
for line in list2:
    if line not in list3:
       non_match.append(line)

print(non_match)

The results will be:

[('Tom', '100'), ('Alex', '200')]

because of case sensitivity! is there any way to avoid the case sensitivity in this case? I don't want to change the lists to upper or lower case.

Or any other method which can match these lists?

Answer 1

This worked for me! Both lists will be converted to lower case.

list2= [('Tom','100'),('Alex','200'),('Tom', '13285')]
list3= [('tom','100'),('ALex','200'),('Tom', '13285')]


 def make_canonical(line):
     name, number = line
     return (name.lower(), number)

 list22 = []
 for line2 in list2:
    search = make_canonical(line2)
    list22.append(search)


 list33 =[]
 for line3 in list3:
     search1 = make_canonical(line3)
     list33.append(search1)


 non_match = []
 for line in list22:
     if line not in list33:
        non_match.append(line)


 print(non_match)