How to check if the string is empty in Python?

Better Stack Team
Updated on February 3, 2023

To check if a string is empty in Python, you can use the len() function. For example:

string = ""
if len(string) == 0:
    print("The string is empty")

You can also use the not operator to check if the string is not empty:

string = ""
if not string:
    print("The string is empty")

Alternatively, you can use the bool() function to check if the string is empty. An empty string is considered to be False, and all other strings are considered to be True:

string = ""
if not bool(string):
    print("The string is empty")

Note that all of these approaches treat a string that consists only of whitespace characters (such as spaces, tabs, or newlines) as being non-empty. To check if a string is empty or consists only of whitespace characters, you can use the strip() function to remove leading and trailing whitespace and then check if the resulting string is empty:

string = "    "
if not string.strip():
    print("The string is empty or consists only of whitespace characters")
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