Python Easy Level MCQs (1-20)
1. What is Python?
- A) A type of snake
- B) A high-level programming language
- C) A popular web browser
- D) A database management system
Answer: B) A high-level programming language
- Explanation: Python is a high-level programming language widely used for various applications, including web development, data analysis, and automation.
2. Which symbol is used to indicate a comment in Python?
- A) % (percent)
- B) // (double forward slash)
- C) # (hash)
- D) @ (at symbol)
Answer: C) # (hash)
- Explanation: In Python, the
#symbol is used to indicate single-line comments. Comments are not executed by the Python interpreter and are used for documentation and code explanations.
3. How do you print “Hello, World!” to the console in Python?
- A)
output("Hello, World!") - B)
print("Hello, World!") - C)
display("Hello, World!") - D)
show("Hello, World!")
Answer: B) print("Hello, World!")
- Explanation: The
printfunction in Python is used to display output to the console. In this case, it will print “Hello, World!”.
4. Which data type is used to store a sequence of characters in Python?
- A) int
- B) float
- C) str
- D) bool
Answer: C) str (string)
- Explanation: The
strdata type in Python is used to store a sequence of characters, such as text.
5. What is the result of the expression 5 + 3 * 2 in Python?
- A) 16
- B) 11
- C) 13
- D) 26
Answer: B) 11
- Explanation: In Python, multiplication (
*) takes precedence over addition (+). So, the expression is evaluated as5 + (3 * 2), which equals 11.
6. How do you create a single-line comment in Python?
- A) /* This is a comment */
- B) <!– This is a comment –>
- C) // This is a comment
- D) # This is a comment
Answer: D) # This is a comment
- Explanation: In Python, single-line comments are created using the
#symbol.
7. Which of the following is a valid variable name in Python?
- A) 123variable
- B) _variable
- C) variable-name
- D) variable name
Answer: B) _variable
- Explanation: Variable names in Python can start with an underscore (
_) or a letter and can contain letters, numbers, and underscores.
8. What is the Python operator for exponentiation?
- A) ^
- B) **
- C) %
- D) //
**Answer: B) **
- Explanation: The
**operator is used for exponentiation in Python. For example,2 ** 3represents 2 raised to the power of 3, which is 8.
9. Which of the following is a valid way to create an empty list in Python?
- A) list()
- B) [ ]
- C) {}
- D) tuple()
Answer: A) list()
- Explanation: You can create an empty list in Python using the
list()constructor.
10. What is the output of the following code?
python
x = 5 y = 3 print(x > y)
- A) True
- B) False
- C) 5
- D) 3
Answer: A) True
- Explanation: The code compares
x(which is 5) andy(which is 3) using the>operator. Since 5 is greater than 3, the result isTrue.
11. Which of the following data types is mutable in Python?
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- A) int - B) float - C) str - D) list
Answer: D) list
- Explanation: Lists are mutable in Python, which means you can change their contents after creation.
12. How do you declare a variable in Python?
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- A) Using the `var` keyword - B) Using the `let` keyword - C) By assigning a value to a name - D) By declaring its type
Answer: C) By assigning a value to a name
- Explanation: In Python, you declare a variable by assigning a value to a name. The variable’s type is determined dynamically.
13. What is the output of the following code?
python
my_list = [1, 2, 3] my_list.append(4) print(my_list)
- A) [1, 2, 3]
- B) [4]
- C) [1, 2, 3, 4]
- D) [1, 2, 3, [4]]
Answer: C) [1, 2, 3, 4]
- Explanation: The
appendmethod is used to add an element to the end of a list. In this case, it appends the value 4 to the list, resulting in[1, 2, 3, 4].
14. What is the purpose of a Python function’s return statement?
vbnet
- A) To print output to the console - B) To terminate the program - C) To specify the function's name - D) To return a value from the function
Answer: D) To return a value from the function
- Explanation: The
returnstatement in a Python function is used to specify the value that the function should return when it is called.
15. What is the output of the following code?
python
x = "Hello" y = "World" print(x + y)
- A) Hello World
- B) HelloWorld
- C) “Hello” + “World”
- D) Error
Answer: A) Hello World
- Explanation: The
+operator is used for string concatenation in Python. It combines the stringsxandyinto “HelloWorld”.
16. Which of the following is not a valid way to comment out multiple lines of code in Python?
markdown
- A) Using triple single-quotes (`'''`) - B) Using triple double-quotes (`"""`) - C) Using `//` at the beginning of each line - D) Using `#` at the beginning of each line
Answer: C) Using // at the beginning of each line
- Explanation: In Python,
//is used for integer division, not for commenting out lines.
17. Which of the following Python data structures stores key-value pairs?
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- A) List - B) Tuple - C) Set - D) Dictionary
Answer: D) Dictionary
- Explanation: A dictionary in Python stores key-value pairs, allowing you to map keys to corresponding values.
18. How do you round the number 3.14159 to the nearest integer in Python?
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- A) `round(3.14159)` - B) `int(3.14159)` - C) `ceil(3.14159)` - D) `floor(3.14159)`
Answer: A) round(3.14159)
- Explanation: The
roundfunction in Python is used to round a floating-point number to the nearest integer.
19. Which Python keyword is used to define a function?
diff
- A) function - B) def - C) define - D) func
Answer: B) def
- Explanation: In Python, the
defkeyword is used to define a function.
20. What is the output of the following code?
python
my_string = "Python" print(my_string[2:4])
- A) Py
- B) th
- C) Pyt
- D) thon
Answer: B) th
- Explanation: This code uses slicing to extract the characters from index 2 (inclusive) to index 4 (exclusive) of the string, resulting in “th.”