How to manipulate items in a list of lists-CodePudding

I am given a list of tuples, and I am trying to remove the white spaces after the strings in each list. It can result in either a list of lists, or a list of tuples as the original structure.

lst = [('4', 'tim                ', 'dba', '7'), ('5', 'joe              ', 'sysadmin', '8')]
lists = [list(x) for x in lst]
for x lists:
    for y in x:
        y = str(y)
        y = "".join(y.split())
print(lst)

CodePudding user response：

this list comprehension will strip the strings of leading and trailing whitespace:

[tuple(s.strip() for s in t) for t in lst]
# [('4', 'tim', 'dba', '7'), ('5', 'joe', 'sysadmin', '8')]

CodePudding user response：

The problem is with the for loop itself. range function returns an iterable object that contains the number from the first argument to the second argument with a default step of 1.

Also, note that tuples are immutable, meaning that they can not change after the first initialization.

I have modified your own script and came up with what follows:

lst = [('4', 'tim                ', 'dba', '7'), ('5', 'joe              ', 'sysadmin', '8')]
lists = [list(x) for x in lst]
for index1, x in enumerate(lst):
  innerLst = list(x)
  for index2, y in enumerate(x):
    innerLst[index2] = y.replace(" ", "")
  lst[index1] = tuple(innerLst)
print(last)

Output

[('4', 'tim', 'dba', '7'), ('5', 'joe', 'sysadmin', '8')]