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Python String isspace() Method - GeeksforGeeks

Last Updated : 02 Jan, 2025

isspace() method in Python is used to check if all characters in a string are whitespace characters. This includes spaces (' '), tabs (\t), newlines (\n), and other Unicode-defined whitespace characters. This method is particularly helpful when validating input or processing text to ensure that it contains only whitespace characters.

Let's understand this with the help of an example:

s = "   "
print(s.isspace()) 

• The string " " contains only whitespace characters (spaces).
• The isspace() method returns True since all characters in the string are whitespace.

string.isspace()

• The isspace() method does not take any parameters.

• Returns True if all characters in the string are whitespace.
• Returns False if the string contains one or more non-whitespace characters or is empty.

Let's see what happens when the string contains non-whitespace characters:

s = "Python is fun! "

print(s.isspace())  

• The string contains non-whitespace characters ("Python is fun!").
• The presence of these characters causes the method to return False.

isspace() method considers tabs and newlines as whitespace characters:

s = "\t\n"

print(s.isspace()) 

• The string contains only a tab (\t) and a newline (\n), both of which are valid whitespace characters.
• The method returns True.

An empty string does not contain any characters, including whitespace.

s = ""
print(s.isspace()) 

• The method returns False.

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