# Noemi Cabrera # 27 October 2021 # In this lesson, I learned to add items to the end of a list using the .append() method. # The item you want to add, a string, integer or list, is placed in the parentheses. # I also appended items to a list with input(). The input is stored in a variable and # then the variable is placed in the parentheses. Also, I learned to use the while loop # with append to repeat code and add items into a defined list. # I didn't have any difficulties in this lesson.

# [ In this code, the .append()method is applied to sample_list. This method adds an item placed in the # parentheses to the end of a list. The sample_list is displayed as it is and then it's displayed with # the added item at the end on a second line. ] review and run example # the list before append sample_list = [1, 1, 2] print("sample_list before: ", sample_list) sample_list.append(3) # the list after append print("sample_list after: ", sample_list)

# [ In this code, the sample_list vaiable created in the code above is used. The # .append() method is used to add an item, in this case an integer, to the end of the # sample list. In total, 3 integers are added. ] review and run example # append number to sample_list print("sample_list start: ", sample_list) sample_list.append(3) print("sample_list added: ", sample_list) # append again sample_list.append(8) print("sample_list added: ", sample_list) # append again sample_list.append(5) print("sample_list added: ", sample_list) # [ ] run this cell several times in a row # [ ] run cell above, then run this cell again

# [ The .append() method is used to add an item, in this case an integer and string, to # the end of the mixed_types list. In total, 1 integer and 1 string are added. The list # is a mix of integers and strings. ] review and run example mixed_types = [1, "cat"] # append number mixed_types.append(3) print("mixed_types list: ", mixed_types) # append string mixed_types.append("turtle") print("mixed_types list: ", mixed_types)

# Currency Values # [ In this code, the cur_values variable contains a list with values of coins and paper # bills. ] create a list of 3 or more currency denomination values, cur_values # cur_values, contains values of coins and paper bills (.01, .05, etc.) cur_values = [.10, 0.25, 1, 5, 10] # [ The original list is printed first. ] print the list print(cur_values) # [ The integer 20 is added to the end of the list and the list is printed again with # the added item. ] append an item to the list and print the list cur_values.append(20) print(cur_values)

# Currency Names # [ In this code, the cur_names variable contains a list with names of coins and paper # bills. ] create a list of 3 or more currency denomination NAMES, cur_names # cur_names contains the NAMES of coins and paper bills (penny, etc.) cur_names = ["penny", "nickel", "dime", "one dollar", "five dollars"] # [ The original list is printed first. ] print the list print(cur_names) # [ The string "fifty dollars" is added to the end of the list and the list is printed # again with the added item. ] append an item to the list and print the list cur_names.append("fifty dollars") print(cur_names)

# [In this code, the cur_names variable defined above is used. The user is asked to enter # a name of a coin or paper bill used in the U.S. The variable add_cur_name, # which contains the input, is appended to the cur_names list.] # append additional values to the Currency Names list using input() add_cur_name = input("Enter a name of a coin or paper bill used in the U.S : ").lower() cur_names.append(add_cur_name) # [The final list is printed. ] print the appended list print(cur_names)

# [ In this code, the .append() method is used along with a while loop. The user is asked # to enter the day of the month they were born. As long as their answer is not "q", the # user will be asked over an over to enter an answer. If answer is "q" the list will be # printed] complete the Birthday Survey task above bday_survey = [] while True: bday = input("Please enter the day of the month you were born (1-31) or 'q' to finish:" ).lower() if bday != "q": bday_survey.append(bday) else: print("List ended") break print("Final list:", bday_survey)

# [ The error in this code was that the index 3 used to do the slice was not found in # the list three_numbers because the list only has indexes 0, 1, and 2. To fix this, I # changed the index count on the slice to 2, so that the last item in the list is # printed.] Fix the Error three_numbers = [1, 1, 2] print("an item in the list is: ", three_numbers[2])