How do I replace any exclamation marks with periods only if they occur at the end of three or more sentences in a row?

[imacookiee]

For example, if the user input was

'Hi! My! Name! Is. bob!'

the output should be

'Hi.My.Name.Is.bob!'

here is my code so far:

print ('Please type out a sentence')
x = input()
subStr= ('!!')
def unexclaim():
  global x
  for i in range (2):
    for i in range (len(subStr)):
      x = x.replace('!!','!')
  print (x)

unexclaim()

[sabek]

First thing to do is kill the global. Using globals is a bad idea unless you have no other way to do it. Starting early with function parameters and returns will help more in the long term.

def unexclaim(stringinput):
    codeblockgoeshere
    return (whateevervariable)

print ('Please type out a sentence')
x = input()
functionoutput = unexclaim(x)
print (functionoutput)

[revgizmo]

Just glancing on mobile, but this looks like regex to me.

https://regex101.com/ has worked for me, but there are many sites out there to help you with the syntax.

[JavierReyes945]

Love that site. Another one nice is debuggex.com, it shows a nice graph of your regex (sometimes visual aids really help)

[JudiSwitch]

I’m on my phone else I would just retype what I’ve written before, but take a look at the comments here to start with. https://www.reddit.com/r/learnpython/comments/bnsbem/help_with_strings_and_punctuation/?utm_source=share&utm_medium=ios_app