Q4 Finals ICT10 General Quiz

What is the correct way to create a string variable in Python?

• var = "Hello"

• var = Hello

• var = (Hello)

• var = [Hello]

Answer explanation

The correct way to create a string variable in Python is by using var = "Hello". This assigns the value Hello to the variable var enclosed in double quotes.

How do you add two numbers and assign the result to a variable in Python?

• result = num1 * num2

• result = num1 / num2

• result = num1 + num2

• result = num1 - num2

Answer explanation

To add two numbers and assign the result to a variable in Python, you use the expression result = num1 + num2.

What is an example of a string literal in Python?

• 42

• "Hello, world!"

• 3.14

• [1, 2, 3]

Answer explanation

An example of a string literal in Python is "Hello, world!". It is enclosed in double quotes and represents a sequence of characters.

How do you comment a single line in Python?

• Using /* comment */

• Using <!-- comment -->

• Using # comment

• Using // comment

Answer explanation

In Python, a single line comment is denoted by using the hash symbol (#) before the comment text. This symbol tells Python to ignore everything that comes after it on the same line.

Which function converts a string to an integer in Python?

• str()

• int()

• float()

• bool()

Answer explanation

The function that converts a string to an integer in Python is int().

How do you concatenate two strings in Python?

• str1 - str2

• str1 + str2

• str1 * str2

• str1 / str2

Answer explanation

To concatenate two strings in Python, you use the '+' operator. Therefore, the correct choice is str1 + str2.

What is the correct syntax for defining a function in Python?

• def function_name[]:

• def function_name():

• def function_name{}:

• def function_name<>:

Answer explanation

The correct syntax for defining a function in Python is 'def function_name():'. The function name is followed by parentheses and a colon.

What keyword is used to return a value from a function in Python?

• break

• return

• continue

• yield

Answer explanation

The keyword 'return' is used to return a value from a function in Python.

How do you create a dictionary in Python?

• dict = {"key1": "value1", "key2": "value2"}

• dict = ["key1": "value1", "key2": "value2"]

• dict = ("key1": "value1", "key2": "value2")

• dict = {"key1", "value1", "key2", "value2"}

Answer explanation

To create a dictionary in Python, you use the format dict = {"key1": "value1", "key2": "value2"}. This format assigns values to specific keys within the dictionary.

What is the correct way to check if a key exists in a dictionary?

• if key in dict:

• if dict has key:

• if key exists in dict:

• if key is in dict:

Answer explanation

The correct way to check if a key exists in a dictionary is by using the syntax 'if key in dict:'.