4 - Iteration, For and While Loops, Mandelbrot

for i in range(5):
  print(i,"Hello there")
  
print() #this creates a space between outputs


i=0
while i <5:
  print(i,"Hello there")
  i=i+1

  FALSE

  TRUE

(1, 'Hello there')
(2, 'Hello there')
(3, 'Hello there')
(4, 'Hello there')
(5, 'Hello there')

  Line 2 should be: print(i+1,"Hello there")

  Line 1 should be: for i in range(1+,5)

  Line 1 should be: for i in range(1,5):

  Line 2 should be: print(i+I,"Hello there")

  modularisation/modularising

  repetition/repeating

  deletion/deleting

  selection/selecting

A count-controlled loop iterates (loops/repeats)
the number of times specified in the loop.

With a condition-controlled loop the 
iteration occurs indefinitely as long as the 
specified condition is being met.

The following loop is a _____________________
controlled loop:

for i in range(10):
    print(i)

  both count and condition

  count

  condition

  neither count nor condition

for i in range(3):
  password=input("Enter password:")

  Line 1 should be changed to: for i in range(<5):

  Line 1 should be: for i in range(5):

  Line 1 should be: while<5: for i in range(5):

  Line 1 should be indented further

import turtle
tina = turtle.Turtle()
tina.shape('turtle')

colors = ["red", "orange", "yellow", "green", "blue", "purple"]

for each_color in colors:
    angle = 360 / len(colors)
    tina.color(each_color)
    tina.circle(40)
    tina.right(angle)
    tina.forward(30)

  Line 5: Add "black" to the end of the list of colors (colours if you're in the UK!)

  Line 5: replace the word "colors" with "black"

  Add a line 13: tina.forward("black circle")

  Line 9: Change to - tina.color(each_color+black)

  There is no iteration in this program

  Line 5

  Line 7

  Line 1

for i in range(2,10):
  print(i)

  Change line 2 to: print(1,10,i)

  Change line 1 to: for i in range(1,10):

  Change line 1 to: for i in range(1,11):

  Change line 1 to: for i in range(11):

import turtle

myPen = turtle.Turtle()
myPen.speed(0)
myPen.color("#FF0000")

side=400
myPen.penup()
myPen.goto(-200,-200) #position cursor at the bootom right of the screen
myPen.pendown()

#Start Spiral
for i in range (1,50):
   myPen.forward(side)
   myPen.left(90)
   side=side-4

  Change line 13 to: for i in range (1,100):

  Add a line 17: myPen.forward(100)

  Change line 7 to: side=400+100

  Change line 13 to: for i in range (50+):

  count / condition

  count / increment

  condition / count

  for / while

#For loop - start value is 1, and stopping condition is 11
for score in range(1,11):
	print(score)
  #the above loop prints 1,2,3,4,5,6,7,8,9,10
 
 
#While loop
score=0
while score <11:
  print(score)
    

  All the statements listed here are correct

  It has a starting value of 0. It also has a stopping condition of 11.

  The score starts at 0 and remains 0 for infinity (forever) because there is no incrementation

  The loop goes on forever. The score remains 0.

#While loop
score=0
while score <10:#what needs changing here?
 #what should go here?
  print(score)

  This cannot be achieved

  Line 3 should be: while score >10: and line 4 should be: score=1

  Line 3 should be: while score = 11: and line 4 should be: score = score+1

  Line 3 should be: while score <10: and line 4 should be: score=score+1

password="open123"
while password=="123":
  print("Access granted")
    

  Change line 2 to: while password=="open123": Note however, this will cause an infinite loop.

  None of these answers are correct

  Change line 2 to: while password=password: The loop will then print "Access granted" once.

  Change line 2 to: while password==True: The loop will then print the numbers 1,2,3

x=22
while x<10:
  print("This")

  is met and it would cause an error.

  never met due to the syntax error in the loop. The colon should be removed.

  is never met becaue the starting value of x is 22 and the loop requires it to be less than 10.

  never met due to the use of the 'while' statement. A 'for' statement should be used instead.

health=100
gameover=True
while gameover==False:
  health_update=int(input("Enter current health:"))
  health=health_update
  if health>20:
    print("You are healthy")
  else:
    print("Your health is critical.....ahhhhhhhhh")
    gameover=True
    

  Change line 2: gameover=False

  Change line 1: health=0

  Change line 3: while gameover==0:

  Change line 10: gameover=False

import turtle

myPen = turtle.Turtle()
myPen.speed(0)
myPen.color("#FF0000")


for j in range (1,100):
  for i in range (1,6):
      myPen.left(144)
      myPen.forward(200)
  myPen.left(5)

  A nested loop (for loop) has been used

  This is called decomposition as the for loop has been duplicatedand effectively cancelled out

  There is an error - you cannot have one for loop inside another

  There are two for loops that are running at exactly the same time. An error is output

password = ""
while password != "secret":
    password = input("Please enter the password: ")
    if password == "secret":
        print("Thank you. You have entered the correct password")
    else:
        print("Sorry the value entered in incorrect - try again")

  equal to as long as it does not contain an exclamation mark

  equals to

  equals to any word that also contains an exclamation mark

  not equals to

for i in range(2):
  while i<3:
    print(i)

  It will output an error. You cannot have a while loop inside a for loop

  It will print 1,2,3 in an infinite loop

  It will print 0,1,2,3

  It will print 0 forever (infinite loop)