test01

What is the output of the following code?

import numpy as np

x = np.array([[1, 2], [3, 4]])

y = np.array([[5, 6], [7, 8]])

z = np.dot(x, y)

print(z)

• a) [[19, 22], [43, 50]]

• b) [[5, 6], [7, 8], [1, 2], [3, 4]]

• c) [[6, 8], [10, 12]]

• d) [[1, 2], [3, 4], [5, 6], [7, 8]]

Tags

1

What is the output of the following code?

import numpy as np

x = np.array([[1, 2], [3, 4]])

y = np.array([5, 6])

z = x * y

print(z)

• a) [[5, 12], [15, 24]]

• b) [[5, 6], [5, 6]]

• c) [[1, 2, 5, 6], [3, 4, 5, 6]]

• d) ValueError: operands could not be broadcast together with shapes (2,2) (2,)

Tags

2

What is the output of the following code?

x = 5

if x > 3:

print("x is greater than 3")

else:

print("x is less than or equal to 3")

• a) x is greater than 3

• b) x is less than or equal to 3

• c) x is equal to 3

• d) None of the above

Tags

3

What is the data type of the value 5 in Python?

• float

• string

• Integer
• list

Tags

4

Which of the following is a valid string declaration in Python?

• string("Hello")

• str = Hello

• str('Hello')

• string = 'Hello'

Tags

5

How do you get the length of a string s in Python?

• len(s)

• s.len()

• length(s)

• s.length()

Tags

6

Which function is used to convert a string to an integer in Python?

• int()

• str()

• convert()

• toInt()

Tags

7

What will the output of the following code be? print("Hello" + " " + "World")

• HelloWorld

• Hello World

• Hello + World

• Error

Tags

8

Which of the following is not a valid data type in Python?

• list

• dict

• set

• array

Tags

9

What is the output of the following code? print("Python"[0])

• P

• y

• t

• n

Tags

10