Warmup - Python - Machine Learning

What is the correct file extension for Python files?

• .pyth
• .pt
• .py
• .pyt

Answer explanation

Python files have the extension .py

Which keyword is used to define a function in Python?

• func
• define
• def
• function

Answer explanation

Functions in Python are defined using 'def'

Which of these data types is immutable in Python?

• List
• Tuple
• Dictionary
• Set

Answer explanation

Tuples are immutable, unlike lists or dictionaries

How do you insert comments in Python code?

• /* comment */
• <!-- comment -->
• // comment
• # comment

Answer explanation

Comments in Python start with #

What does the len() function do in Python?

• Returns the type of a variable
• Returns the number of items in an object
• Returns the memory address
• None of the above

Answer explanation

len() returns the number of elements in a collection

Which of the following is used to handle exceptions in Python?

• try-except
• do-catch
• handle-except
• error-catch

Answer explanation

Python uses try-except for exception handling

Which method is used to add an item to a list?

• add()
• append()
• insert()
• push()

Answer explanation

The append() method adds an item at the end of the list

Which of these is not a valid Python loop?

• for
• while
• loop
• None of the above

Answer explanation

Python does not have a 'loop' keyword

How do you create a variable with the numeric value 5?

• x == 5
• x := 5
• x = 5
• x <− 5

Answer explanation

Variables in Python are created with '='

Which operator is used for exponentiation in Python?

• ^
• **
• exp()
• ^^

Answer explanation

** is the exponentiation operator in Python