U1M1A1.9.3PRAPRO

# [ ] create and populate list called days_of_week then print it days_of_week = ["Monday","Tuesday","Wednesday","Thursday","Friday","Saturday","Sunday"] print(days_of_week)

# [ ] after days_of_week is run above, print the days in the list at odd indexes 1,3,5 print(days_of_week[1]) print(days_of_week[3]) print(days_of_week[5])

# [ ] create and populate list called phone_letters then print it phone_letters = [" ","","ABC","DEF","GHI","JKL","MNO","PQRS","TUV","WXYZ"] print(phone_letters)

# [ ] create a variable: day, assign day to "Tuesday" using days_of_week[] # [ ] print day variable day = days_of_week[1] print(day)

# PART 2 # [ ] assign day to days_of_week index = 5 # [ ] print day days_of_week[5]=day print(days_of_week)

# [ ] Make up a new day! - append an 8th day of the week to days_of_week # [ ] print days_of_week days_of_week.append("Restday") print(days_of_week)

# [ ] Make up another new day - insert a new day into the middle of days_of_week between Wed - Thurs # [ ] print days_of_week days_of_week.insert(4,"Tryday") print(days_of_week)

# [ ] Extend the weekend - insert a day between Fri & Sat in the days_of_week list # [ ] print days_of_week days_of_week.insert(6,"Icecreamday") print(days_of_week)

# [ ] print days_of_week # [ ] modified week is too long - pop() the last index of days_of_week & print .pop() value # [ ] print days_of_week print(days_of_week) print(days_of_week.pop()) print(days_of_week)

# [ ] print days_of_week # [ ] delete (del) the new day added to the middle of the week # [ ] print days_of_week print(days_of_week) del days_of_week[4] print(days_of_week)

# [ ] print days_of_week # [ ] programmers choice - pop() any day in days_of week & print .pop() value # [ ] print days_of_week print(days_of_week) print(days_of_week.pop(3)) print(days_of_week)

# [ ] create let_to_num() def let_to_num(): letter=input("Enter a letter, space, or nothing: ").upper() key = 0 while key < 10: if letter==" ": return key break elif letter in phone_letters[key]: return key break else: key = key + 1 while key == 10: return "Not Found" break print(let_to_num())

# [ ] Challenge: write the code for "reverse a string" some_numbers =[1,2,3,4,5,6,7,8,9,11,22,33,44,55,66,77] rev_list = [] print(some_numbers) while some_numbers: last = some_numbers.pop(0) rev_list.insert(0,last) #print("new list:", rev_list) print("\nnew list:", rev_list)