float.is_integer() Is integer
Last updated: 2026-09-22
float.is_integer() Is integer
float.is_integer() returns whether the float is integral.
| Category | Number Methods |
|---|---|
| Kind | Built-in Type Method |
| Python Version | all |
📝 Syntax
float.is_integer()Returns：bool. True if the float has no fractional part, else False.
Mutates the original：No (returns a new object)
▶ Example
Edit the code, press Run, and see the result in the output panel:
Output：
True
False💡 Related Cases
More case studies coming soon — check back later.
❓ FAQ
QWhat does is_integer() check?
AWhether the float is exactly an integer value. 2.0 returns True, 2.5 returns False.
QWhat is the difference from int(x) == x?
AThe result is equivalent but more readable, and it is reliable for very large numbers: 1e300.is_integer() returns True.
QWhat is it useful for?
AChecking whether an operation result is an integer, so floating-point rounding error is not mistaken for a non-integer.
