CS: Introduction to Python

Question 1

What’s an interpreter?

Answer 1

An interpreter is a translator that takes a high-level language (source program) and converts it into machine code.

Question 2

What are some important things to keep in mind about programming in Python?

Answer 2

Python is case sensitive, spacing is important, and error messages are helpful in helping you learn.

Question 3

What’s a variable?

Answer 3

It’s a container in which data can be stored.

Question 4

What will be the output?
x=4
x=”Noura”
print(x)

Answer 4

Noura

Question 5

What are the rules for python variables?

Answer 5

1. A variable name must start with a letter or underscore.
2. A variable name cannot start with a number
3. A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _ )
4. Variable names are case-sensitive
5. The reserved words (keywords) cannot be used naming the variable.

Question 6

What are a few reserved keywords?

Answer 6

False, None, True, and, if, elif, else, not, or, while…

Question 7

Can I name my variable “2Names”?

Answer 7

No, because variables can’t start with numbers.

Question 8

Can I name my variable “_2Names”?

Answer 8

Yes, because variables can start with underscores.

Question 9

Is this a valid way of assigning variables?
x, y, z = “A”, “B”, “C”

Answer 9

Yes

Question 10

What are the different data types?

Answer 10

String (str), integer (int), float (float), boolean (bool), lists…

Question 11

(Program) Create variables that input the user’s name, height, and citizenship status.

Answer 11

name = input(“Enter your name: “)
height = float(input(“Enter your height in meters: “))
citizenship_status = input(“Are you a citizen? (yes/no): “)
print(“User Information:”)
print(“Name:”, name)
print(“Height:”, height, “meters”)
print(“Citizenship Status:”, citizenship_status)

Question 12

What is type casting?

Answer 12

Changing one variable data type into another.
ex: Age=int(Age)