Generalized ufuncs concept in NumPy - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the numpy module with its common alias.

NumPy

import [1] as np

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

Anum

Bnumpy

Cnump

Dnp

Attempts:

3 left

💡 Hint

Common Mistakes

Using the alias name instead of the full library name in the import statement.

Misspelling the library name.

We import the numpy library using the name numpy. The alias np is used for convenience.

2fill in blank

medium

Complete the code to create a numpy array from a Python list.

NumPy

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

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

Alist

Basarray

Carray

Dfromlist

Attempts:

3 left

💡 Hint

Common Mistakes

Using list instead of array.

Using asarray which also works but is less common for direct creation.

The np.array() function creates a numpy array from a Python list.

3fill in blank

hard

Fix the error in the code to apply a generalized ufunc that adds 1 to each element.

NumPy

result = np.add(arr, [1])

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

Aarr

Bnp.array(1)

C[1]

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Passing the array itself as the second argument.

Passing a list or numpy array instead of a scalar.

The second argument to np.add should be the scalar 1 to add 1 to each element.

4fill in blank

hard

Fill both blanks to create a generalized ufunc that multiplies each element by 2 and then adds 3.

NumPy

step1 = np.multiply(arr, [1])
result = np.add(step1, [2])

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

A2

B3

Carr

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Using the array instead of scalar values.

Mixing up the order of operations.

First multiply each element by 2, then add 3 to each element.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps each word to its length if length is greater than 3.

NumPy

lengths = { [1]: [2] for [1] in words if [2] [3] 3 }

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

Aword

Blen(word)

C>

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using the length as the key instead of the word.

Using the wrong comparison operator.

The dictionary comprehension maps each word to its length len(word) if the length is greater than 3.