Python String endswith() method returns True if a string ends with the given suffix, otherwise returns False.
Python String endswith() Method Syntax
Syntax: str.endswith(suffix, start, end)
Parameters:
- suffix: Suffix is nothing but a string that needs to be checked.
- start: Starting position from where suffix is needed to be checked within the string.
- end: Ending position + 1 from where suffix is needed to be checked within the string.
Return: ReturnsTrue if the string ends with the given suffix otherwise return False.
Note: If start and end index is not provided then by default it takes 0 and length -1 as starting and ending indexes where ending index is not included in our search.
Python String endswith() Method Example
Python3
string = "neveropen"print(string.endswith("Lazyroar")) |
Output:
True
Python endswith() without start and end Parameters
we shall look at multiple test cases on how one can use Python String endswith() method without start and end parameters.
Python3
text = "Lazyroar for Lazyroar."# returns Falseresult = text.endswith('for Lazyroar')print (result)# returns Trueresult = text.endswith('Lazyroar.')print (result)# returns Trueresult = text.endswith('for Lazyroar.')print (result)# returns Trueresult = text.endswith('Lazyroar for Lazyroar.')print (result) |
Output:
False True True True
Time complexity: O(n), where n is the length of the string being searched for.
Auxiliary space: O(1), as the method endswith() only requires a constant amount of memory to store the variables text, result, and the string being searched for.
Python endswith() With start and end Parameters
we shall add two extra parameters, the reason to add start and end values is that sometimes you need to provide big suffix/text to be checked and that time start and end parameters are very important.
Python3
text = "Lazyroar for Lazyroar."# start parameter: 10result = text.endswith('Lazyroar.', 10)print(result)# Both start and end is provided# start: 10, end: 16 - 1# Returns Falseresult = text.endswith('Lazyroar', 10, 16)print(result)# returns Trueresult = text.endswith('Lazyroar', 10, 15)print(result) |
Output:
True True False
Real-World Example where endswith() is widely used
In this example, we take a String input from the user and check whether the input String endswith ‘@geeksforgeeks.org’ or not, then we print ‘Hello Geek’ else we print ‘Invalid, A Stranger detected’.
Python3
print("***Valid GeeksforLazyroar Email Checker***\n")user_email = input("Enter your GFG Official Mail:").lower()if user_email.endswith("@geeksforgeeks.org"): print("Hello Geek")else: print("Invalid, A Stranger detected") |
Output:
***Valid GeeksforLazyroar Email Checker*** Enter your GFG Official Mail:s@geeksforgeeks.org Hello Geek ***Valid GeeksforLazyroar Email Checker*** Enter your GFG Official Mail:s@google.com Invalid, A Stranger detected
