Python Program to accept string ending with alphanumeric character

When it is required to check if a string ends with an alphanumeric character or not, the regular expression is used. A method is defined that checks to see an alphanumeric characters, and returns the string as output.

Example

Below is a demonstration of the same

import re

regex_expression = '[a-zA-z0-9]$'

def check_string(my_string):

   if(re.search(regex_expression, my_string)):
      print("The string ends with alphanumeric character")

   else:
      print("The string doesnot end with alphanumeric character")


my_string_1 = "Python@"
print("The string is :")
print(my_string_1)
check_string(my_string_1)

my_string_2 = "Python1245"
print("\nThe string is :")
print(my_string_2)
check_string(my_string_2)

Output

The string is :
Python@
The string doesn’t end with alphanumeric character
The string is :
Python1245
The string ends with alphanumeric character

Explanation

• The required packages are imported.

• A regular expression string is defined.

• A method named ‘check_string’ is defined, and it takes the string as a parameter.

• The ‘search’ method is called and checked to see if a string ends with a specific character.

• Outside the method, the string is defined and displayed on the console.

• The method is called by passing this string.

• The output is displayed on the console.

AmitDiwan

Updated on: 20-Sep-2021

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