Hands-on exercise – Conditional Statements

Put the lesson Conditional Statements into practice by writing a program yourself.

Exercise field

Classify a material by its band gap

The problem

A material's band gap (in electronvolts, eV) tells you how it conducts electricity:

A band gap of 0 means a conductor, less than 3 means a semiconductor, and 3 or more means an insulator.

Your program should

Use if, elif and else to choose the category.
For silicon (band gap 1.12), print Silicon is a semiconductor.
Your program should still work if you change band_gap to 0 or 5.5.

Expected output

Silicon is a semiconductor

Your solution

Write your program below and press Run. Each run is checked against the expected output.

main.py

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or press Ctrl + Enter in the editor

Output

Press Run to see what your program prints.

Need help?

One possible solution. Other programs that print the same output are correct too.

solution.py

material = "Silicon"band_gap = 1.12  # eVif band_gap == 0:    category = "conductor"elif band_gap < 3:    category = "semiconductor"else:    category = "insulator"print(f"{material} is a {category}")

Output

Silicon is a semiconductor