pop/remove items out of a python tuple

Question

I am not sure if I can make myself clear but will try.

I have a tuple in python which I go through as follows (see code below). While going through it, I maintain a counter (let's call it 'n') and 'pop' items that meet a certain condition.

Now of course once I pop the first item, the numbering all goes wrong, how can I do what I want to do more elegantly while removing only certain entries of a tuple on the fly?

for x in tupleX:

  n=0

  if (condition):

     tupleX.pop(n)

  n=n+1

Answer 1

As DSM mentions, tuple's are immutable, but even for lists, a more elegant solution is to use filter:

tupleX = filter(str.isdigit, tupleX)

or, if condition is not a function, use a comprehension:

tupleX = [x for x in tupleX if x > 5]

if you really need tupleX to be a tuple, use a generator expression and pass that to tuple:

tupleX = tuple(x for x in tupleX if condition)

To know more about this you can have a look at the following video:-