# [ ] review and run example visited_cities = ["New York", "Shanghai", "Munich", "Toyko", "Dubai", "Mexico City", "São Paulo", "Hyderabad"] wish_cities = ["Reykjavík", "Moscow", "Beijing", "Lamu"] # .extend() # extending visited_cities list (IN PLACE) by concatenating wish_cities visited_cities.extend(wish_cities) print("ALL CITIES",visited_cities)

# [ ] review and run example visited_cities = ["New York", "Shanghai", "Munich", "Toyko", "Dubai", "Mexico City", "São Paulo", "Hyderabad"] wish_cities = ["Reykjavík", "Moscow", "Beijing", "Lamu"] # (+) Addition operator for lists creates a (NEW) combined List all_cities = visited_cities + wish_cities print("ALL CITIES") for city in all_cities: print(city)

# [ ] review and run example team_a = [0,2,2,2,4,4,4,5,6,6,6] team_b = [0,0,0,1,1,2,3,3,3,6,8] print("Team A:", team_a, "\nTeam B:",team_b) # (+) Addition operator team_totals = team_a + team_b print("Team Totals", team_totals)

# [ ] review and run example after running cell above # .extend() team_a.extend(team_b) print("Team_a extended", team_a) # what happens if you keep running this cell?

# [ ] extend the list common_birds with list birds_seen which you must create common_birds = ["chicken", "blue jay", "crow", "pigeon"] birds_seen = ["turkey", "Cardinal", "dove", "sparrow"] common_birds.extend(birds_seen) print(common_birds)

# [ ] Create 2 lists zero_nine and ten_onehundred that contain 1-9, and 10 - 100 by 10's. # [ ] use list addition to concatenate the lists into all_num and print zero_nine = [1,2,3,4,5,6,7,8,9] ten_onehundred = [10,20,30,40,50,60,70,80,90,100] all_num =

# [ ] review and run example cities_1 = ["Dubai", "Mexico City", "São Paulo", "Hyderabad"] print("regular", cities_1) cities_1.reverse() print("reversed", cities_1)

# [ ] review and run example all_num = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100] print("regular list",all_num, "\n") all_num.reverse() print("reverse list",all_num, "\n") num_len = len(all_num) print("Three Multiple") for num in all_num: if num/3 == int(num/3): print(num) else: pass

# [ ] review and run example # create a list of numbers by casting a range count_list = list(range(21)) print("before list", count_list) # and reverse count_list.reverse() print("after list", count_list)

# [ ] create and print a list of multiples of 5 from 5 to 100 # { ] reverse the list and print fives = [5,10,15,20,25,30,35,30,45,50,55,60,65,70,75,80,85,90,95,100] print(fives) fives.reverse() print(fives)

# [ ] Create two lists: fours & more_fours containing multiples of four from 4 to 44 # [ ] combine and print so that the output is mirrored [44, 40,...8, 4, 4, 8, ...40, 44] fours = [4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44] four_more = [4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44] four_more.reverse() all_fours = fours + four_more print(all_fours)

# [ ] review and run example quiz_scores = [20, 19, 20, 15, 20, 20, 20, 18, 18, 18, 19] # use .sort() quiz_scores.sort() print("quiz_scores:", quiz_scores)

# [ ] review and run example game_points = [3, 14, 0, 8, 21, 1, 3, 8] # use sorted() sorted_points = sorted(game_points) print("game_points:", game_points) print("sorted_points:", sorted_points)

# [ ] review and run example cities_1 = ["Dubai", "Mexico City", "São Paulo", "Hyderabad"] print("Unsorted", cities_1) cities_1.sort() print("Sorted", cities_1)

# [ ] print cites from visited_cities list in alphbetical order using .sort() # [ ] only print cities that names start "Q" or earlier visited_cities = ["New York", "Shanghai", "Munich", "Toyko", "Dubai", "Mexico City", "São Paulo", "Hyderabad"] visited_cities.sort() print(visited_cities) for city in visited_cities: if city[0] <= "Q": print(city) else: pass

# [ ] make a sorted copy (sorted_cities) of visited_cities list # [ ] remove city names 5 characters or less from sorted_cities # [ ] print visitied cites and sorted cities visited_cities = ["New York", "Shanghai", "Munich", "Toyko", "Dubai", "Mexico City", "São Paulo", "Hyderabad"] sorted_cities = sorted(visited_cities) for city in visited_cities: if len(city) <= 5: sorted_cities.remove(city) else: pass print(visited_cities) print(sorted_cities)

# [ ] build a list (add_animals) using a while loop, stop adding when an empty string is entered add_animals = [] while True: animal = input("Enter the name of an animal").title() if animal != '': add_animals.append(animal) else: break

# [ ] extend the lists into animals, then sort animals = ["Chimpanzee", "Panther", "Wolf", "Armadillo"] animals.extend(add_animals) animals.sort()

# [ ] get input if list should be viewed alpha or reverse alpha and display list a_or_r = input("Enter 'alpha' for alphabetical order or 'reverse' for reverse order:") if a_or_r == 'alpha': print(animals) else: animals.reverse() print(animals)

add_animals = [] while True: animal = input("Enter the name of an animal and type exit when finished: ").title() if animal != "exit": add_animals.append(animal) else: break animals = ["Chimpanzee", "Panther", "Wolf", "Armadillo"] animals.extend(add_animals) animals.sort() a_or_r = input("Enter 'alpha' for alphabetical order list or 'reverse' for reverse order list:") if a_or_r == 'alpha': print(animals) else: animals.reverse() print(animals)