Tests that replace_punctuation() replaces 1 exclamation point and 2 semicolons in "we'll continue our quest in space. there will be more shuttle flights and more shuttle crews and, yes; more volunteers, more civilians, more teachers in space. nothing ends here; our hopes and our journeys continue!".

def replace_punctuation(input_str,exclamationCount =0,semicolonCount=0):

   result=''

   for i in input_str:

       if i=='!':

           i='.'

           exclamationCount+=1

       elif i==';':

           i=','

           semicolonCount+=1

       result+=i

   print('Punctuation replaced')

   #displaying replaced values counts

   print('exclamationCount:',exclamationCount)

   print('semicolonCount:',semicolonCount)

   return result

Explanation: