Tensor operations (add, mul, matmul) in PyTorch - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to add two tensors element-wise.

PyTorch

import torch

a = torch.tensor([1, 2, 3])
b = torch.tensor([4, 5, 6])
result = a[1]b
print(result)

Drag options to blanks, or click blank then click option'

A-

B*

C@

D+

Attempts:

3 left

💡 Hint

Common Mistakes

Using - or * instead of + for addition.

Using the + operator adds two tensors element-wise.

2fill in blank

medium

Complete the code to multiply two tensors element-wise.

PyTorch

import torch

a = torch.tensor([1, 2, 3])
b = torch.tensor([4, 5, 6])
result = a[1]b
print(result)

Drag options to blanks, or click blank then click option'

A-

B*

C@

D+

Attempts:

3 left

💡 Hint

Common Mistakes

Using + or @ instead of * for element-wise multiplication.

The * operator multiplies tensors element-wise in PyTorch.

3fill in blank

hard

Fix the error in the code to perform matrix multiplication of two 2D tensors.

PyTorch

import torch

a = torch.tensor([[1, 2], [3, 4]])
b = torch.tensor([[5, 6], [7, 8]])
result = a[1]b
print(result)

Drag options to blanks, or click blank then click option'

A@

B-

C+

D*

Attempts:

3 left

💡 Hint

Common Mistakes

Using * which does element-wise multiplication, not matrix multiplication.

The @ operator performs matrix multiplication in PyTorch.

4fill in blank

hard

Fill both blanks to create a tensor of squares for numbers 1 to 5, but only include squares greater than 10.

PyTorch

squares = {x: x[1]2 for x in range(1, 6) if x[2]10}
print(squares)

Drag options to blanks, or click blank then click option'

A**

B>

C<

D*

Attempts:

3 left

💡 Hint

Common Mistakes

Using * instead of ** for square.

Using < instead of > for filtering.

** is used for exponentiation (square), and > filters values greater than 10.

5fill in blank

hard

Fill all three blanks to create a dictionary with uppercase keys, values as original numbers, and only include numbers greater than 2.

PyTorch

result = [1]: [2] for [3] in range(1, 6) if [3] > 2}
print(result)

Drag options to blanks, or click blank then click option'

Astr(x).upper()

Bx

Dnum

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variable names inconsistently.

Not converting keys to uppercase strings.

Use str(x).upper() to uppercase keys, x as values, and x as the loop variable.