str.endswith() Ends with suffix
Last updated: 2026-09-22
str.endswith() Ends with suffix
str.endswith(suffix[, start[, end]]) checks whether the string ends with suffix.
| Category | String Methods |
|---|---|
| Kind | Built-in Type Method |
| Python Version | all |
📝 Syntax
str.endswith(suffix[, start[, end]])⚙️ Parameters
| suffix Required | The suffix to check; a string or a tuple of strings. |
|---|---|
| start Optional | Start index of the range (inclusive); None means the beginning.（Default：None） |
| end Optional | End index of the range (exclusive); None means the end.（Default：None） |
Returns：bool. True if the string ends with suffix within the range.
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
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❓ FAQ
QHow do I check multiple suffixes at once?
APass a tuple of suffixes to suffix: 'a.py'.endswith(('.py', '.txt')) returns True. suffix can be a string or a tuple of strings.
QWhat do the start/end parameters do?
AThey delimit the inspection range (left-closed, right-open). For example, 'hello.py'.endswith('.py', 0, 8) inspects only the first 8 characters 'hello.p' and returns False.
QIs endswith() case-sensitive?
AYes. 'a.PY'.endswith('.py') is False; you need to call lower() first.
QWhat happens with an empty string as the suffix?
AEvery string ends with an empty string, so 'abc'.endswith('') returns True.
