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Python

Variables, functions, lists, and conditionals — the fundamentals of Python.

Beginner

3 levels

01 — lesson1.py

1# Variables store data values

2message = [ ___ ]

3count = [ ___ ]

5print(message, count)

Assign values to the variables so the program outputs "Hello World 42"

02 — lesson2.py

1def add(a, b):

2 return [ ___ ]

4result = add(3, 7)

5print(result) # 10

Complete the "add" function so it returns the sum of a and b (should out…

03 — lesson3.py

easyList Length

1fruits = ["apple", "banana", "cherry"]

3for i in range([ ___ ](fruits)):

4 print(fruits[i])

Use the correct built-in function to loop through all fruits and print e…

Intermediate

5 levels

04 — lesson4.py

mediumList Comprehensions

1nums = [1, 2, 3, 4, 5]

2doubled = [n [ ___ ] 2 for n in nums]

4print(doubled)

5# [2, 4, 6, 8, 10]

Complete the list comprehension so it doubles every number

05 — lesson5.py

mediumConditionals

1def check_age(age):

2 if age [ ___ ] 18:

3 return "You can vote!"

4 return "Too young"

Add the right comparison operator to check if age is 18 OR older

06 — lesson6.py

mediumDictionaries

1user = {"name": "Ada", "age": 30}

2name = user[[ ___ ]]

Access the user's name from the dictionary using the correct key

07 — lesson7.py

1fruits = ["apple", "banana", "cherry"]

2for fruit [ ___ ] fruits:

Complete the for loop to print each fruit

08 — lesson8.py

mediumf-strings

3bio = f"{name} is [ ___ ] years old"

Complete the f-string to interpolate the age variable

Advanced

1 level

09 — lesson9.py

hardError Handling

1def parse_number(text):

3 return int(text)

4 [ ___ ] ValueError:

Complete the try/except so a parsing failure returns None instead of cra…

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