How Can I Efficiently Check if a Python List is Empty?

Checking if a List is Empty in Python

Determining whether a list is empty is a common task in Python programming. One efficient method is to utilize the implicit booleanness of empty lists.

Example Usage:

Consider the following code snippet:

a = []

if not a:
    print("List is empty")

Here, the empty list a is evaluated as False in the boolean expression not a. As a result, the print statement will execute, indicating that the list is empty.

Explanation:

Empty lists in Python are considered "falsy" values. The not operator inverts the boolean value, resulting in True. Consequently, the if statement evaluates to True when the list is empty.

Pythonic Approach:

Using the implicit booleanness of empty lists is considered a Pythonic approach. It is concise and avoids unnecessary conditionals.

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