How to Check if a String is Empty in Python?

Problem –

You want to check whether a string is empty or not in python.

Solution –

There are various ways to check if a string is empty or not in python. Let’s look at them one by one.

Using len() –

You can use python built in len() function to check if a string is empty or not.

In [1]: str1 = ""

In [2]: str2 = "python"

In [3]: if len(str1) == 0:
   ...:     print("String is empty")
   ...: else:
   ...:     print("String is not empty")
   ...:     
String is empty

In [4]: if len(str2) == 0:
   ...:     print("String is empty")
   ...: else:
   ...:     print("String is not empty")
   ...:     
String is not empty

Using not –

You can also use not operator in python to check whether a string is empty or not.

In [5]: if not str1:
   ...:     print("String is empty")
   ...: else:
   ...:     print("String is not empty")
   ...:     
String is empty

In [6]: if not str2:
   ...:     print("string is empty")
   ...: else:
   ...:     print("string is not empty")
   ...:     
string is not empty