9.1.4 Python Quiz 🐍

What will the following statement output? print("Hello, World!")

• a) Error

• b) Hello, World

• c) HelloWorld

• d) Hello, World!

🖨️ Which of the following is the correct syntax to print a string in Python?

• a) print string("Hello")

• b) print(string: "Hello")

• c) print("Hello")

• d) echo("Hello")

What will the following statement output? print(123)

• a) 123

• b) "123"

• c) Error

• d) 123.0

📊 Which data type is 3.14 in Python?

• a) String

• b) Integer

• c) Float

• d) List

Answer explanation

In Python, numbers with decimal points are considered to be of float type. Integers are whole numbers without decimal points, and strings would be enclosed in quotes.

What will the following statement output? print("Age: " + 20)

• a) Age: 20

• b) Error

• c) Age: +20

• d) 20Age:

Answer explanation

Python doesn't allow direct concatenation of strings and integers with the + operator. This will throw a TypeError. To concatenate them, the integer needs to be converted to a string using the str() function.

🌉 How can we fix the error in the previous question?

• a) print("Age: " + str(20))

• b) print("Age: " , 20)

• c) Both a and b

• d) print(20 + "Age: ")

Answer explanation

The error arises from trying to concatenate a string and an integer. We can fix it by converting the integer to a string using str(), or by using commas to separate the items in the print() function, which will print them with spaces in between.

What will the following statement output? print(len("Python"))

• a) 5

• b) 6

• c) Error

• d) Python

Answer explanation

The len() function returns the number of items in an object. For a string, it returns the number of characters. The string "Python" has 6 characters.

🛠️ Which of the following functions can be used to convert a string into an integer?

• a) str()

• b) int()

• c) float()

• d) char()

Answer explanation

The int() function is used to convert compatible data types into integers. For example, the string "123" can be converted to the integer 123 using int("123").

After executing x = 10, what is the value of x?

• a) "10"

• b) 10.0

• c) x

• d) 10

Answer explanation

The = operator is used for assignment in Python. This means the value on the right (10) is stored in the variable on the left (x). So, x holds the integer value 10.

📦 Which of the following is a valid variable assignment?

• a) 1a = "Python"

• b) $var = "Python"

• c) _myVar = "Python"

• d) None of the above

Answer explanation

In Python, variable names cannot start with a number and special characters like the dollar sign ($). They can start with an underscore (_) or a letter.