How can I check if a list is empty in Python using the not operator?
Rashid D
To check if a list is empty in Python using thenot operator, you can apply thenot operator to the list, which will evaluate the truthiness of the list object. Since an empty list evaluates toFalse in a boolean context, applyingnot to an empty list will result inTrue.
Here's an example of how you can perform this check:
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my_list = []
if not my_list:
print("The list is empty.")
else:
print("The list is not empty.")
In the above code, thenot operator is used to negate the truthiness of the listmy_list. Theif statement checks if the negated list isTrue (i.e., the list is empty) and executes the corresponding code block. If the list is empty, it prints "The list is empty." Otherwise, it prints "The list is not empty."
By using thenot operator in the conditional expression, you can check if the list is empty without explicitly comparing its length or checking for equality with an empty list (my_list == [] orlen(my_list) == 0).
This approach is concise and widely used in Python to check if a container, such as a list, is empty or not. It leverages the truthiness of the list object itself, allowing for a straightforward and readable way to perform the empty check.
Remember that an empty list evaluates toFalse in a boolean context, while a non-empty list evaluates toTrue.
