Import aliasing in Python - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

Output of alias import usage

What is the output of this Python code using import aliasing?

Python

import math as m

result = m.sqrt(16)
print(result)

A NameError

B 16

C sqrt(16)

D 4.0

💡 Hint

Remember that aliasing lets you use a shorter name for a module.

The math module is imported as 'm'. Calling m.sqrt(16) returns the square root of 16, which is 4.0.

❓ Predict Output

intermediate

Effect of aliasing on function call

What will be printed by this code snippet?

Python

from datetime import datetime as dt

now = dt.now()
print(type(now))

A <class 'datetime.datetime'>

B <class 'datetime.date'>

C datetime.now()

D AttributeError

💡 Hint

Check what dt.now() returns and its type.

The alias 'dt' refers to datetime class. dt.now() returns a datetime object, so its type is .

🔧 Debug

advanced

Identify the error caused by incorrect aliasing

What error does this code raise?

Python

import json as jsn

print(json.dumps({'a':1}))

A AttributeError

B NameError

C SyntaxError

D TypeError

💡 Hint

Look at the name used to call the function vs the alias.

The module json is imported as jsn, but the code calls json.dumps, which is undefined, causing a NameError.

🧠 Conceptual

advanced

Understanding aliasing effect on namespace

After running this code, which names are defined in the current namespace?

Python

import os as operating_system
from math import sqrt as square_root

print(square_root(9))

A operating_system and square_root

B os and square_root

C os and sqrt

D operating_system and sqrt

💡 Hint

Aliasing changes the names you use in your code.

The module os is imported as operating_system, and sqrt is imported as square_root. So only these two names exist in the namespace.

📝 Syntax

expert

Which import aliasing syntax is correct?

Which option correctly imports the module 'collections' with alias 'col'?

A from collections as col import *

B from collections import * as col

C import collections as col

D import collections col

💡 Hint

The 'as' keyword is used after the module name in import statements.

The correct syntax for aliasing a module is 'import module_name as alias'. Other options are invalid syntax.