Import aliasing in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the math module with an alias 'm'.

Python

import [1] as m
print(m.sqrt(16))

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

Amath

Bos

Csys

Drandom

Attempts:

3 left

💡 Hint

Common Mistakes

Using a wrong module name like 'random' or 'sys'.

Not using 'as' keyword for aliasing.

The math module is imported with alias 'm' to use math functions like sqrt.

2fill in blank

medium

Complete the code to import the datetime module with alias 'dt' and print current year.

Python

import [1] as dt
print(dt.datetime.now().year)

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

Atime

Bcalendar

Cdateutil

Ddatetime

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'time' instead of 'datetime'.

Forgetting to use alias 'dt' in print statement.

The datetime module is imported as 'dt' to access datetime functions.

3fill in blank

hard

Fix the error in the code to import the json module with alias 'js' and load a JSON string.

Python

import [1] as js
json_str = '{"name": "Alice"}'
data = js.loads(json_str)
print(data['name'])

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

Asimplejson

Bjs

Cjson

Djsonlib

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to import a non-existent module like 'js'.

Using wrong module names like 'jsonlib' or 'simplejson' without installation.

The standard module for JSON is 'json', which can be aliased as 'js'.

4fill in blank

hard

Fill both blanks to import the random module as 'rnd' and print a random integer between 1 and 10.

Python

import [1] as rnd
print(rnd.[2](1, 10))

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

Arandom

Brandint

Cchoice

Drandrange

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'choice' instead of 'randint' for integers.

Not aliasing the module correctly.

The random module is aliased as 'rnd' and randint generates a random integer in the range.

5fill in blank

hard

Fill all three blanks to import the os module as 'oper', get current working directory, and list files.

Python

import [1] as oper
cwd = oper.[2]()
files = oper.[3](cwd)
print(files)

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

Aos

Bgetcwd

Clistdir

Dpath

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'path' instead of 'listdir' to list files.

Not aliasing the os module correctly.

The os module is aliased as 'oper'. getcwd() gets current directory, listdir() lists files.

Practice

1. What does import aliasing in Python allow you to do?

easy

A. Run code without importing modules

B. Change the original module code

C. Automatically update modules

D. Use a different name for a module or function when importing it

Solution

1. Step 1: Understand import aliasing purpose

   Import aliasing lets you give a module or function a new name when you import it, usually shorter or clearer.

2. Step 2: Compare options

   Only Use a different name for a module or function when importing it describes using a different name for a module or function during import, which matches import aliasing.

3. Final Answer:

   Use a different name for a module or function when importing it -> Option D

4. Quick Check:

   Import aliasing = different import name [OK]

Hint: Alias means giving a new name when importing [OK]

Common Mistakes:

• Thinking aliasing changes module code
• Confusing aliasing with automatic updates
• Believing aliasing runs code without import

2. Which of the following is the correct syntax to import the math module with alias 'm'?

easy

A. import math as m

B. import math to m

C. from math import m

D. import m as math

Solution

1. Step 1: Recall correct import alias syntax

   The correct syntax to alias a module is: import module_name as alias_name.

2. Step 2: Match syntax with options

   import math as m matches this syntax exactly: import math as m.

3. Final Answer:

   import math as m -> Option A

4. Quick Check:

   import ... as ... = correct alias syntax [OK]

Hint: Use 'import module as alias' for aliasing [OK]

Common Mistakes:

• Using 'to' instead of 'as'
• Confusing import with from-import syntax
• Reversing alias and module names

3. What will be the output of this code?

import math as m
print(m.sqrt(16))

medium

A. 16

B. 4.0

C. sqrt(16)

D. Error: module not found

Solution

1. Step 1: Understand alias usage in code

   The math module is imported as 'm', so m.sqrt(16) calls the sqrt function from math.

2. Step 2: Calculate sqrt(16)

   The square root of 16 is 4.0, so print(m.sqrt(16)) outputs 4.0.

3. Final Answer:

   4.0 -> Option B

4. Quick Check:

   m.sqrt(16) = 4.0 [OK]

Hint: Alias calls work like original module calls [OK]

Common Mistakes:

• Expecting integer 4 instead of float 4.0
• Confusing alias name with original module name
• Thinking alias causes import error

4. What is wrong with this code?

import random as r
print(random.randint(1, 5))

medium

A. random is not defined due to aliasing

B. random module is not imported

C. randint function does not exist

D. Syntax error in import statement

Solution

1. Step 1: Analyze import aliasing effect

   The module random is imported as 'r', so the name 'random' is not defined in this code.

2. Step 2: Identify cause of error

   Calling random.randint(...) causes a NameError because 'random' is undefined; should use 'r.randint(...)'.

3. Final Answer:

   random is not defined due to aliasing -> Option A

4. Quick Check:

   Aliased module name must be used [OK]

Hint: Use alias name, not original module name [OK]

Common Mistakes:

• Using original module name after aliasing
• Assuming alias imports both names
• Thinking randint is missing

5. You want to import the datetime module as 'dt' and use only the datetime class inside it with alias 'dtime'. Which is the correct way?

hard

A. import datetime as dt
from dt import datetime as dtime

B. from dt import datetime as dtime
import datetime as dt

C. import datetime as dt
from datetime import datetime as dtime

D. from datetime import datetime as dt
import datetime as dtime

Solution

1. Step 1: Import module with alias

   Use 'import datetime as dt' to alias the module as dt.

2. Step 2: Import class with alias from aliased module

   You cannot import from the alias 'dt' directly; you must import from the original module name 'datetime'. So use 'from datetime import datetime as dtime'.

3. Step 3: Check option correctness

   import datetime as dt from datetime import datetime as dtime correctly imports the module as dt and the datetime class as dtime from the original module.

4. Final Answer:

   import datetime as dt from datetime import datetime as dtime -> Option C

5. Quick Check:

   Module alias then from original module import class with alias [OK]

Hint: Alias module first, then import class from original module [OK]

Common Mistakes:

• Trying to import from original after aliasing
• Importing from alias before aliasing
• Swapping alias names