Python, NumPy, and Pandas Quiz

Which of the following is a valid Python variable name?

• 1variable

• variable-name

• _variable1

• variable name

What is the output of `print(0b10)` in Python?

• 0b10

• 10

• 2

• 1

Which Python structure is immutable?

• List

• Set

• Dictionary

• Tuple

Which data type is used to store key-value pairs in Python?

• List

• Tuple

• Dictionary

• Set

Which function is used to get the shape of a NumPy array?

• shape()

• array.shape

• getshape()

• size()

Which method is used to create an array filled with zeros in NumPy?

• np.zero()

• np.zeros()

• np.null()

• np.empty()

Which pandas object is one-dimensional?

• DataFrame

• Panel

• Series

• Index

How to check for null values in a Series?

• isna()

• notnull()

• isnull()

• null()

Which arithmetic operator is used for exponentiation in Python?

• ^

• **

• *

• %

What does `range(5)` return in Python?

• A list from 1 to 5

• A list from 0 to 5

• A sequence from 0 to 4

• A sequence from 1 to 4