WGU D335 INTRODUCTION TO PROGRAMMING
IN PYTHON — COMPREHENSIVE PRACTICE
EXAM (350 QUESTIONS) AND DETAILED
SOLUTIONS
Section 1: Python Basics, Syntax, and Variables (Questions 1–40)
1. Which of the following is the correct way to output text to the console in
Python?
A. echo "Hello, World!"
B. print("Hello, World!")
C. console.log("Hello, World!")
D. printf("Hello, World!")
Correct Answer: B
Rationale: The built-in `print()` function is the standard way to display output in
Python. `echo` is a shell command, `console.log` is JavaScript, and `printf` is
C/C++.
2. What symbol begins a single-line comment in Python?
A. `//`
,B. `/*`
C. `#`
D. `--`
Correct Answer: C
Rationale: Python uses the `#` symbol for single-line comments. `//` is used for
floor division, `/* */` is for block comments in C-style languages, and `--` is used in
SQL and some other languages.
3. Which of the following variable names is invalid in Python?
A. `_my_var`
B. `myVar2`
C. `2myVar`
D. `MY_VAR`
Correct Answer: C
Rationale: Variable names cannot begin with a digit. They may begin with a letter
or an underscore. Options A, B, and D all follow valid naming conventions.
4. What data type does the expression `3 + 4.0` produce?
A. `int`
,B. `float`
C. `str`
D. `complex`
Correct Answer: B
Rationale: Python automatically promotes the integer `3` to a float (`3.0`) when
mixing types. The result is `7.0`, which is a `float`.
5. Which built-in function converts a value to a string?
A. `int()`
B. `float()`
C. `str()`
D. `string()`
Correct Answer: C
Rationale: `str()` converts any value to its string representation. `int()` and `float()`
convert to numeric types. `string()` is not a built-in function.
6. What is the output of the following code?
```python
x=5
, y=2
print(x // y)
```
A. 2.5
B. 2
C. 3
D. 1
Correct Answer: B
Rationale: The `//` operator performs floor division. `5 // 2` equals `2` because it
discards the fractional part.
7. What is the output of `print(7 % 3)`?
A. 2.33
B. 2
C. 1
D. 0
Correct Answer: C
Rationale: The modulo operator `%` returns the remainder. `7` divided by `3`
leaves a remainder of `1`.
IN PYTHON — COMPREHENSIVE PRACTICE
EXAM (350 QUESTIONS) AND DETAILED
SOLUTIONS
Section 1: Python Basics, Syntax, and Variables (Questions 1–40)
1. Which of the following is the correct way to output text to the console in
Python?
A. echo "Hello, World!"
B. print("Hello, World!")
C. console.log("Hello, World!")
D. printf("Hello, World!")
Correct Answer: B
Rationale: The built-in `print()` function is the standard way to display output in
Python. `echo` is a shell command, `console.log` is JavaScript, and `printf` is
C/C++.
2. What symbol begins a single-line comment in Python?
A. `//`
,B. `/*`
C. `#`
D. `--`
Correct Answer: C
Rationale: Python uses the `#` symbol for single-line comments. `//` is used for
floor division, `/* */` is for block comments in C-style languages, and `--` is used in
SQL and some other languages.
3. Which of the following variable names is invalid in Python?
A. `_my_var`
B. `myVar2`
C. `2myVar`
D. `MY_VAR`
Correct Answer: C
Rationale: Variable names cannot begin with a digit. They may begin with a letter
or an underscore. Options A, B, and D all follow valid naming conventions.
4. What data type does the expression `3 + 4.0` produce?
A. `int`
,B. `float`
C. `str`
D. `complex`
Correct Answer: B
Rationale: Python automatically promotes the integer `3` to a float (`3.0`) when
mixing types. The result is `7.0`, which is a `float`.
5. Which built-in function converts a value to a string?
A. `int()`
B. `float()`
C. `str()`
D. `string()`
Correct Answer: C
Rationale: `str()` converts any value to its string representation. `int()` and `float()`
convert to numeric types. `string()` is not a built-in function.
6. What is the output of the following code?
```python
x=5
, y=2
print(x // y)
```
A. 2.5
B. 2
C. 3
D. 1
Correct Answer: B
Rationale: The `//` operator performs floor division. `5 // 2` equals `2` because it
discards the fractional part.
7. What is the output of `print(7 % 3)`?
A. 2.33
B. 2
C. 1
D. 0
Correct Answer: C
Rationale: The modulo operator `%` returns the remainder. `7` divided by `3`
leaves a remainder of `1`.
