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Riya Python work!

Key things I learned: I learned how to impliment menu’s and how to you can call functions in menu options, so that certain things can be run when you select that option.

another link

Code Snippets:

List code: I learned how to make my own list and append it to a dictionary, and I also learned how to run lists recursvley, and use a for and while loop too. I feel like this was a really beneficial hack.

InfoDb = []

InfoDb.append({  
               "Name": "Harry Potter",  
               "Favorite Spell": "Expecto Patronum",  
               "Pet": "Hedwig",  
               "House": "Gryffindor",  
               "Favorite Class": "Defense against the Dark Arts",  
               "Necessities":["Glasses","Invisibility Cloak","Mauraders Map","Wand",]  
              })  



def print_data(n):
    print(InfoDb[n]["Name"], InfoDb[n]["House"])  # 
    print("\t", "Necessities: ", end="")
    print(", ".join(InfoDb[n]["Necessities"]))
    print()


def for_loop():
    for n in range(len(InfoDb)):
        print_data(n)


def while_loop(n):
    while n < len(InfoDb):
        print_data(n)
        n += 1
    return


def recursive_loop(n):
    if n < len(InfoDb):
        print_data(n)
        recursive_loop(n + 1)
    return # exit condition
    
def tester1():
    print("For loop")
    for_loop()
def tester2():
  print("While loop")
  while_loop(0)  # requires initial index to start while
def tester3():
  print("Recursive loop")
  recursive_loop(0)  # requires initial index to start recursion
  

• Hack: How to create submenus. I thought this was really helpful, because we didn’t have to have everything crowded into one big menu. Instead. we could develop submenus that have categories grouped together.

  sub_menu = [
    ["Matrix", menu.matrix],
    #["Swap", menu.swapnumbers(0,0)],
    ["Swap", menu.swapnumbers],
]

patterns_sub_menu = [
    ["Animation", menu.ship],
    ["Christmas Tree", menu.grow_tree],
    #["Funcy", None],
]
listandloops_sub_menu = [
    ["For Loop", list.tester1],
    ["While Loop", list.tester2],
    ["Fibonacci", fibonacci.tester],
    ["Recursive Loop",list.tester3]
]

Hack: Fibonacci using try and except. It was interesting having to think through pseudocode for how to write this program, and then impliment it.

def recur_fibo(n):
  if n<=1:
    return n
  else:
    return(recur_fibo(n-1) + recur_fibo(n-2))


def tester():
  try:
    nterms = int(input("How many terms?"))
    if nterms <= 0:
      print("please enter a positive integer")
    else:
        print("Fibonacci sequence:")
        for i in range(nterms):
          print(recur_fibo(i))
  except ValueError:
    print(f"Not a number:{nterms}")