str.isspace() Whitespace only
Last updated: 2026-09-22
str.isspace() Whitespace only
str.isspace() returns True if non-empty and every char is whitespace.
| Category | String Methods |
|---|---|
| Kind | Built-in Type Method |
| Python Version | all |
📝 Syntax
str.isspace()Returns：bool. True if non-empty and every char is whitespace.
Mutates the original：No (returns a new object)
▶ Example
Edit the code, press Run, and see the result in the output panel:
Output：
True
True
False💡 Related Cases
More case studies coming soon — check back later.
❓ FAQ
QWhat does an empty string return?
AFalse. isspace() requires non-empty input, so ''.isspace() is False.
QWhich characters count as whitespace?
ASpace, \t (tab), \n (newline), \r (carriage return), and so on. ' \t\n'.isspace() is True.
QWhat is a common use case?
AChecking whether a line is entirely blank, e.g. skipping empty lines in logs: if not line.isspace(): then process.
