You want to know how
remove is different from
pop when manipulating a list in Python. What should you do?
Here are four facts which should help elucidate the differences.
removekeyword searches for a matching item in the list -- not by its indexed, integer value; then the first matching item is removed. (We tested it. You may want to see this external page.)
- Remove does not return a value.
- Pop removes an item based on its indexed, integer value.
- Pop returns the item removed.
Here are two programs which help display the the details of what is happening behind-the-scenes.
This program involves four function calls:
import cProfile a = "z", "y", "x", "w", "v" contintlist = list(a) cProfile.run('contintlist.remove("z")') # One function call is finding the matching element in the list. The second is removing the first match.
This program also involves four function calls:
import cProfile a = 1, 2, 3, 4, 5 contintlist = list(a) cProfile.run('contintlist.pop(3)') # One function call is removing the item in the list. The second is returning that item.