Ignore ValueError when removing element from list in Python

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Borislav Hadzhiev

Last updated: Aug 15, 2022

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Ignore ValueError when removing element from list in Python #

Use a try/except statement to ignore the ValueError when removing an element from a list. If an error occurs, it gets handled by the except block where you can use the pass statement to ignore it.

main.py
my_list = ['a', 'b', 'c'] # ✅ Ignore ValueError when removing item from a list (remove()) try: my_list.remove('d') except ValueError: # 👇️ this runs print('The specified value is not in the list') pass # 👈️ ignore the error # ------------------------------------------- # ✅ Ignore IndexError when removing item from a list (pop()) try: my_list.pop(100) except IndexError: # 👇️ this runs print('The specified index is out of range') pass # 👈️ ignore the error # ------------------------------------------- # ✅ Ignore IndexError when removing item from a list (del) try: del my_list[100] except IndexError: # 👇️ this runs print('The specified index is out of range') pass # 👈️ ignore the error

We used a try/except statement to ignore a possible ValueError when removing an item from a list.

main.py
my_list = ['a', 'b', 'c'] # ✅ Ignore ValueError when removing item from a list (remove()) try: my_list.remove('d') except ValueError: # 👇️ this runs pass # 👈️ ignore error

The list.remove() method removes the first item from the list whose value is equal to the passed in argument.

The method raises a ValueError if there is no such item.

The remove() method mutates the original list and returns None.

If the value is not present in the list, the except block runs.

The pass statement does nothing and is used when a statement is required syntactically but the program requires no action.

If you use the list.pop() method to remove an item from a list, you might get an IndexError.

You can use a try/except statement to ignore or handle the error.

main.py
my_list = ['a', 'b', 'c'] try: my_list.pop(100) except IndexError: pass # 👈️ ignore the error

The list.pop method removes the item at the given position in the list and returns it.

If no index is specified, the pop() method removes and returns the last item in the list.

You might also get an IndexError if you use the del operator with an index that is out of range.

main.py
my_list = ['a', 'b', 'c'] try: del my_list[100] except IndexError: pass # 👈️ ignore the error

The del operator removes the item at the specified index or raises an IndexError if the provided index is out of range.

If the index is out of range, the except block runs where we use the pass statement to ignore the error.

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