Python Fundamentals for Beginners

Question 1

In a Python assignment statement, what symbol is used as the assignment operator?

Accepted Answer

=

Question 2

What are the three characters allowed in Python variable names besides letters?

Accepted Answer

Digits and underscores

Question 3

Why is `2nd_score` an invalid variable name in Python?

Accepted Answer

It starts with a digit

Question 4

What naming convention does Python's style guide recommend for multi-word variables?

Accepted Answer

Snake case (all lowercase with underscores)

Question 5

How does Python treat variables named `Total` and `total`?

Accepted Answer

As two different variables (case-sensitive)

Question 6

What is the term for reserved words like `if`, `True`, and `while` that cannot be used as variable names?

Accepted Answer

Keywords

Question 7

What data type is produced when an integer is multiplied by a float?

Accepted Answer

Float

Question 8

What is the resulting data type of any division operation using the `/` operator?

Accepted Answer

Float

Question 9

In the expression `'Hi' * 3`, what does the `*` operator perform?

Accepted Answer

String repetition

Question 10

Which function converts a numeric value to a string?

Accepted Answer

`str()`

Question 11

Which symbols are used to define a Python list?

Accepted Answer

Square brackets `[]`

Question 12

What is the index number of the first element in a Python list?

Accepted Answer

0

Question 13

How can you access the very last element of a list using negative indexing?

Accepted Answer

Using index `-1`

Question 14

Which function returns the number of elements currently in a list?

Accepted Answer

`len()`

Question 15

A `while` loop continues to run as long as the loop expression evaluates to what?

Accepted Answer

True

Question 16

What happens to a program's execution if a `while` loop's condition never becomes False?

Accepted Answer

It becomes an infinite loop

Question 17

In a counting loop, what is the term for the amount a counter changes in each iteration?

Accepted Answer

Step size

Question 18

What does a `for` loop do?

Accepted Answer

Iterates over all elements in a container

Question 19

What integers are generated by `range(4)`?

Accepted Answer

0, 1, 2, 3

Question 20

In `range(start, end)`, which value is exclusive (not included in the sequence)?

Accepted Answer

The `end` value

Question 21

Which keyword is required to begin a function definition?

Accepted Answer

`def`

Question 22

When defining a function, what must immediately follow the function name?

Accepted Answer

Parentheses `()`

Question 23

What is the primary benefit of using functions to promote "modularity"?

Accepted Answer

Grouping code related to a single task

Question 24

What is "control flow" in a computer program?

Accepted Answer

The sequence of program execution

Question 25

Where does control flow move after a function finishes its execution?

Accepted Answer

Back to where the function was called