LAB
Objectives
- becoming familiar with the concept of, and working with, variables
- performing basic computations and conversions
- experimenting with Python code
Scenario
Miles and kilometers are units of length or distance.
Bearing in mind that 1 mile is equal to approximately 1.61 kilometers, complete the program in the editor so that it converts:
- miles to kilometers
- kilometers to miles
Do not change anything in the existing code. Write your code in the places indicated by ### . Test your program with the data we've provided in the source code.
Pay particular attention to what is going inside the print() function. Analyze how we provide multiple arguments to the function, and how we output the expected data.
Note that some of the arguments inside the print() function are strings (e.g., "miles is", whereas some other are variables (e.g., miles).
TIP
There's one more interesting thing happening there. Can you see another function inside the print() function? It's the round() function. Its job is to round the outputted result to the number of decimal places specified in the parentheses, and return a float (inside the round() function you can find the variable name, a comma, and the number of decimal places we're aiming for). WE're going to talk about functions very soon, so don't worry that everything may not be fully clear yet. We just want to spark your curiosity.
After completing the lab, open Sandbox, and experiment more. Try to write different converters, e.g., a USD to EUR converter, a temperature converter, etc. - let your imagination fly! Try to output the results by combining strings and variables. Try to use and experiment with the round() function to round your results to one, tow, or three decimal places. Check out what happens if you don't provide any number of digits. Remember to text your programs.
Experiment, draw conclusions,a dn learn. Be curious.
Expected output
7.38 miles is 11.88 kilometers
12.25 kilometers is 7.61 miles
LAB
Objectives
- becoming familiar with the concept of numbers, operators, and arithmetic operations in Python
- performing basic calculations
Scenario
Take a look at the code in the editor: it reads a float value, puts it into a variable named x, and prints the value of the variable named y. Your task is to complete the code in order to evaluate the following expression.
3x3 - 2x2 + 3x - 1
The result should be assigned to y.
Remember that classical algebraic notation likes to omit the multiplication operator - you need to use tit explicitly. Note how we cahnge data type to make sure that x is of type float.
Keep your code clean and readable, and text is using the data we've provided, each time assigning it to the x variable (by hardcoding it).Don't be discouraged by any initial failures. Be persistent and inquisitive.
Test Data
Sample input
x = 0
x = 1
x = -1
Expected Output
y = -1.0
y = 3.0
y = -9.0
