Task 2

1. first_name asks for "Last name"
2. last_name asks for "First name"
3. last_name input is missing a bracket before the input string
4. full_name variable uses non existent "First_name" variable rather than "first_name" variable
5. full_name initialization uses "&" symbol instead of "+" symbol to concat strings
6. Prin function has capital P where it shouldn't
7. Prin function is misspelled, meant to be "print"
8. full_name init does not use last_name variable but uses a string containing "lastname"
9. full_name uses nonexistent variable "lastname" rather than "last_name" variable
10. full_name forgets to close string literal 11. full_name forgets to close the string literal and concat last_name into the string 12. full_name has too many spaces between the beggining of the string and the "&" symbol

Part B

10.2: debugging.py

x = 1
first_name = "John"
last_name = "Doe"
full_name = f"{first_name} & {last_name}"

print("Enter your first name: " + first_name)
print("Enter your last name: " + last_name)

while (x < 10):
  print(full_name)
  x += 1

Output

>>> Enter your first name: John
>>> Enter your last name: Doe
>>> John & Doe
>>> John & Doe
>>> John & Doe
>>> John & Doe
>>> John & Doe
>>> John & Doe
>>> John & Doe
>>> John & Doe
>>> John & Doe

Task 3

The following is the code that helped me get the above table

I used VSCode's built in debugger to debug the code, and get the values at each point.

Source: 10.3 numbers.py

number = 1
x = 1

while(x < 5):
    number = number * 2
    x = x + 1

print("Answer =", str(number))

I also improved upon that code as follows

Source: 10.3 numbers improved.py

from math import pow

print("Answer =", int(pow(2, 4)))

It yields the same output, except we have to use int to convert the float to an integer. Python really does work in mysterious ways

Output: 10.3 numbers improved.py

>>> Answer = 16

Output: 10.3 numbers.py

>>> Answer = 16

Task 4

This was the task where we added print statements to understand the values better at each point of execution

10.4: tracing.py

number = 1
x = 1

print("Enter an integer: " + str(number))

while(x < 5):
  print(f"x at start of loop = {str(x)}")
  print(f"number at start of loop = {str(number)}")
  number = number * 2
  x = x + 1
  print(f"x at end of loop = {str(x)}\n")


print("Answer =", str(number))

Output

>>> Enter an integer: 1
>>> x at start of loop = 1
>>> number at start of loop = 1
>>> x at end of loop = 2
>>> x at start of loop = 2
>>> number at start of loop = 2
>>> x at end of loop = 3
>>> x at start of loop = 3
>>> number at start of loop = 4
>>> x at end of loop = 4
>>> x at start of loop = 4
>>> number at start of loop = 8
>>> x at end of loop = 5
>>> Answer = 16