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January 14, 2020 23:53
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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,57 @@ example = ["cow", "pig", "goat", "sheep"] # What are two ways to add something to a list? example.append("chicken") example.insert(1, "horse") print("Adding to list:", example) # What are two ways to remove something from a list? del(example[0]) example.remove("goat") print("Removing from list:", example) # What are two ways to get a sorted copy of a list, without changing the original list? example2 = example[:] # slice notation, gets copy of list example2.sort() print("Example", example, "Example 2", example2) example3 = example.copy() example3.sort() print("Example", example, "Example 3", example3) # How do you find out whether a certain value in a list? if "goat" not in example: print("Goat not in example") if "pig" in example: print("Pig in example") # How do you find out the location of a certain value in a list? print(example) print(example.index("pig")) # What's a tuple? # A tuple is a list you can't change, and its made using () instead of [] test = ("red", "green", "blue") # How do you make a list of lists? listOfLists = [] listOfLists.append(example) listOfLists.append(example2) listOfLists.append(example3) print(listOfLists) # How do you get a single value from a list of lists? print(listOfLists[0][0]) # First index of list, second index of item in list # What is a dictionary? # A dictionary is how you would store variables, with keys dictionary = {"Monday":"Hello", "Tuesday":"Goodbye"} # How do you add an item to a dictionary? dictionary["Wednesday"] = "Hi" print(dictionary) # How do you look up an item from its key? print(dictionary["Tuesday"]) # In brackets put the key, not the value