Operator Practice Lab

Solve these exercises to reinforce your understanding of operator precedence, bitwise logic, and functional patterns. The problems are divided by difficulty to help you build up your skills.

Beginner Exercises

These problems focus on fundamental arithmetic, comparison, and logical operations.

Pyground

Convert a temperature from Celsius to Fahrenheit. The formula is F = (C * 9/5) + 32.

Expected Output:

25°C is equal to 85.0°F

Output:

Pyground

An item costs $19.99. If you have $50, check if you have enough money to buy two of them.

Expected Output:

Can I afford two items? True

Output:

Pyground

A person is eligible for a senior discount if they are 65 years or older. Check if a person aged 70 is eligible.

Expected Output:

Is a person aged 70 eligible for a senior discount? True

Output:

Pyground

A door should open if a valid keycard is used OR if it's after hours. Check if the door opens if it's not after hours but a valid keycard is used.

Expected Output:

Does the door open? True

Output:

Intermediate Exercises

These problems involve chained comparisons, short-circuiting, and the operator module.

Pyground

Check if a number is within the range of 1 to 100, inclusive, using a chained comparison.

Expected Output:

Is 42 in the range [1, 100]? True
Is 101 in the range [1, 100]? False

Output:

Pyground

A configuration value can be provided, but if it's an empty string, it should default to 'default.conf'. Use the `or` operator's short-circuiting behavior to achieve this.

Expected Output:

Using config file: default.conf
Using config file: user.conf

Output:

Pyground

You have a list of student dictionaries. Sort them by their 'grade' from highest to lowest using `operator.itemgetter`.

Expected Output:

[{'name': 'Bob', 'grade': 95}, {'name': 'Alice', 'grade': 88}, {'name': 'Charlie', 'grade': 82}]

Output:

Pyground

Determine if a year is a leap year. A leap year is divisible by 4, except for years divisible by 100 unless they are also divisible by 400.

Expected Output:

Is 2024 a leap year? True
Is 1900 a leap year? False
Is 2000 a leap year? True

Output:

Advanced Exercises

These problems require combining multiple concepts, including bitwise logic and careful precedence management.

Pyground

Use bitwise operators to manage a set of feature flags. Start with read-only, then grant write access, and finally revoke read access. Check the final state.

Expected Output:

Initial permissions: 0b1
After granting write: 0b11
After revoking read: 0b10
Can read? False, Can write? True, Is admin? False

Output:

Pyground

Write an expression to calculate `(a + b) * (c // d) ** e` and use parentheses to ensure the correct order of operations. Use a=5, b=3, c=20, d=3, e=2.

Expected Output:

The result is: 288

Output:

Pyground

Given a price and user status, calculate a dynamic discount. A user gets a 15% discount if they are a student OR have placed more than 10 orders. Additionally, if the bill after this first discount is over $50, they get a further 10% 'bulk' discount.

Expected Output:

Initial price: $60.00
Bill after base discount: $51.00
Final bill after all discounts: $45.90

Output:

operator Module & Overloading Control Structures Overview