string casing methods

We’ve already seen how powerful Python can be when dealing with strings. We can search the string with the in keyword, we can take a piece of text by slicing it, take its length, format with f-strings, etc. That’s actually only the tip of the iceberg.
In Python, there are many utility functions to deal with more involved text manipulations. There are 40+ utilities that can be used in different scenarios. The whole list of those methods can be found on the official python webpage: string methods. The good news is that it’s not necessary to remember them all. Almost all of them have a very intuitive name and it’s easy to find what’s necessary with a quick google search. We will cover some very popular functions which come in handy from time to time and are used frequently when working with strings.
# .upper() makes all the letters uppercase
s = 'What happened to Anna?'
up = s.upper()
print('Hi 123 this is Sally!'.upper())   # HI 123 THIS IS SALLY!
print(s)                                 # What happened to Anna?
print(s.upper())                         # WHAT HAPPENED TO ANNA?
print(up)                                # WHAT HAPPENED TO ANNA?


# .lower() makes all the letters lowercase
s = 'What happened to Anna?'
low = s.lower()
print('Hi 123 this is Sally!'.lower())   # hi 123 this is sally!
print(s)                                 # What happened to Anna?
print(s.lower())                         # what happened to anna?
print(low)                               # what happened to anna?


# .title() start all the words with a capital letter (title-case)
s = 'What happened to Anna?'
title = s.title()
print('Hi 123 this is Sally!'.title())   # Hi 123 This Is Sally!
print(s)                                 # What happened to Anna?
print(s.title())                         # What Happened To Anna?
print(title)                             # What Happened To Anna?


# .capitalize() start all the sentences with a capital letter
s = 'What happened to Anna?'
capital = s.capitalize()
print('Hi 123 this is Sally!'.capitalize())   # Hi 123 this is sally!
print(s)                                 # What happened to Anna?
print(s.capitalize())                    # What happened to anna?
print(capital)                           # What happened to anna?


# .swapcase() turn lowercase -> uppercase, uppercase -> lowercase
s = 'What happened to Anna?'
swapped = s.swapcase()
print('Hi 123 this is Sally!'.swapcase())   # hI 123 THIS IS sALLY!
print(s)                                 # What happened to Anna?
print(s.swapcase())                      # wHAT HAPPENED TO aNNA?
print(swapped)                           # wHAT HAPPENED TO aNNA?
It’s important to note that the string methods do not modify the original variable. They create a new value and return it. The original value stays the same. So, when calling a.lower(), the value of a does not change. It stays the same, but lower() returns a new value that contains the lowercase version of a.

Challenge

You are given a command and a piece of text. Your task is to apply that command to the text.
The command can be any of: upper, lower, capitalize, title, swap.
The command can also be represented with capitals and lowercase letters. The command handling should not be case-sensitive.
The first line of the program contains the command. The second line contains the text which needs to be modified.
The output should be a single line - the transformed text.
Input
Output
Upper What's your name??
WHAT'S YOUR NAME??
loWer Hey, how are You?
hey, how are you?
swap THIS is InTeresTING
this IS iNtERESting
 

Constraints

Time limit: 2 seconds

Memory limit: 512 MB

Output limit: 1 MB

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