programming-examples/python/Regular_Expression/Matches a string that has an a followed by one or more b's.py

import re  
def text_match(text):  
        patterns = 'ab+?'  
        if re.search(patterns,  text):  
                return 'Found a match!'  
        else:  
                return('Not matched!')  
  
print(text_match("ab"))  
print(text_match("abc"))