simple magic methods, upper, lower and strip added

Author: Kingcatch

024_string_operations.py

@@ -42,7 +42,7 @@
 new_string = old_string.replace("YOUR_NAME", "Kay")
 
 # Uncomment this next line to see the result
-# print(new_string)
+print(new_string)
 
 # You'll notice here that the function is coming in a
 # different place. Let's compare `len` and `replace`:
@@ -80,7 +80,7 @@
 
 def make_uppercase(string):
   # Return the string in uppercase
-  pass
+  return string.upper()
 
 check_that_these_are_equal(
   make_uppercase("hello"), "HELLO")
@@ -97,7 +97,7 @@ def make_uppercase(string):
 
 def make_lowercase(string):
   # Return the string in lowercase
-  pass
+  return string.lower()
 
 check_that_these_are_equal(
   make_lowercase("HELLO"), "hello")
@@ -115,7 +115,7 @@ def make_lowercase(string):
 def strip_whitespace(string):
   # Return the string with any whitespace removed from
   # the start and end
-  pass
+  return string.strip()
 
 check_that_these_are_equal(
   strip_whitespace("hello "), "hello")