In Python, the str.isspace() method is used to check if all characters in a string are whitespace characters. This method returns True if the string consists only of whitespace characters and contains at least one character; otherwise, it returns False.

Syntax

str.isspace()

Example Usage

1. Basic usage with spaces:

text = "   "
result = text.isspace()
print(result)  # Output: True

2. Including other whitespace characters:

text = "\t\n"  # Tab and newline are also considered whitespace
result = text.isspace()
print(result)  # Output: True

3. Checking a string with mixed characters:

text = "   Hello   "
result = text.isspace()
print(result)  # Output: False (contains non-whitespace characters)

4. Empty string:

text = ""
result = text.isspace()
print(result)  # Output: False (empty string has no characters)

5. String with non-whitespace characters:

text = "Hello World"
result = text.isspace()
print(result)  # Output: False (contains letters)

Important Notes

• The isspace() method recognizes various whitespace characters, including:
  • Space (' ')
  • Tab ('\t')
  • Newline ('\n')
  • Carriage return ('\r')
  • Vertical tab ('\v')
  • Form feed ('\f')
• It returns False for strings that contain any characters that are not whitespace.

Summary

• Use str.isspace() to determine if a string consists entirely of whitespace characters.
• It returns True for strings made up solely of whitespace (including tabs and newlines) and False for strings containing any non-whitespace characters.