Naming rules and conventions in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a valid variable name in Python.

Python

my[1] = 10

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A1var

B_var

C-var

Dvar!

Attempts:

3 left

💡 Hint

Common Mistakes

Starting variable names with a digit

Using special characters in variable names

Variable names can include letters, digits, and underscores but cannot start with a digit or contain special characters like '-' or '!'.

2fill in blank

medium

Complete the code to follow Python naming conventions for constants.

Python

[1] = 3.14

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ApiValue

BPi_Value

Cpi_value

DPI_VALUE

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase letters for constants

Not using underscores to separate words

Constants in Python are usually named using all uppercase letters with underscores separating words.

3fill in blank

hard

Fix the error in the variable name to make it valid.

Python

user[1]name = 'Alice'

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A-name

B name

C_name

D1name

Attempts:

3 left

💡 Hint

Common Mistakes

Including spaces in variable names

Starting variable names with digits

Using hyphens in variable names

Variable names cannot contain spaces or hyphens and cannot start with digits. Using an underscore is valid.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension with valid variable names and a condition.

Python

{word: len(word) for word in words if len(word) [1] [2]

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A>

B<

C3

Dword

Attempts:

3 left

💡 Hint

Common Mistakes

Using invalid operators

Using variable names instead of numbers in conditions

The condition filters words with length greater than 3. The operator '>' and number '3' are needed.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension with uppercase keys, values, and a condition.

Python

result = [1]: [2] for word in words if len(word) [3] 4

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Aword.upper()

Bword

C>

Dlen(word)

Attempts:

3 left

💡 Hint

Common Mistakes

Using length as key instead of uppercase word

Using wrong comparison operator

Mixing keys and values

Keys are uppercase words using word.upper(), values are the original words, and the condition filters words longer than 4 characters.