Python: Matches a string that has an a followed by zero or more b's

Python Regular Expression: Exercise-2 with Solution

Write a Python program that matches a string that has an a followed by zero or more b's.

Sample Solution:

Python Code:

import re
def text_match(text):
        patterns = '^a(b*)$'
        if re.search(patterns,  text):
                return 'Found a match!'
        else:
                return('Not matched!')
print(text_match("ac"))
print(text_match("abc"))
print(text_match("a"))
print(text_match("ab"))
print(text_match("abb"))

Sample Output:

Not matched!
Not matched!
Found a match!
Found a match!
Found a match!

Flowchart:

Python Code Editor:

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: Write a Python program to check that a string contains only a certain set of characters (in this case a-z, A-Z and 0-9).
Next: Write a Python program that matches a string that has an a followed by one or more b's.