list modification exercises complete

Author: Kingcatch

031_list_modification.py

@@ -71,7 +71,7 @@ def append_item_to_list(the_list, item):
 print("Function: remove_item_from_list")
 
 def remove_item_from_list(the_list, item):
-  # ...
+  the_list.remove(item)
   return the_list
 
 # If you have trouble here, make sure you're returning the
@@ -87,7 +87,7 @@ def remove_item_from_list(the_list, item):
 print("Function: count_items_in_list")
 
 def count_items_in_list(the_list, item):
-  return # ...
+  return the_list.count(item)
 
 # Whereas here you'll need to return the result of the
 # function you call, not the list.
@@ -102,7 +102,7 @@ def count_items_in_list(the_list, item):
 print("Function: get_index_of_item")
 
 def get_index_of_item(the_list, item):
-  return # ...
+  return the_list.index(item)
 
 check_that_these_are_equal(
   get_index_of_item(['a', 'b', 'c'], 'b'), 1)
@@ -115,7 +115,7 @@ def get_index_of_item(the_list, item):
 print("Function: reverse_list")
 
 def reverse_list(the_list):
-  # ...
+  the_list.reverse()
   return the_list
 
 check_that_these_are_equal(
@@ -130,7 +130,7 @@ def reverse_list(the_list):
 
 # Note — it's the same as for strings!
 def list_length(the_list):
-  return # ...
+  return len(the_list)
 
 check_that_these_are_equal(
   list_length(['a', 'b', 'c']), 3)