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PYTHON PROGRAM • DECISION MAKING

Calculate a Grade in Python

Learn calculate a grade in python with a short, executable Python example.

Beginnerif-elifRange classification

PROBLEM UNDERSTANDING

Input and expected output

Sample input
No input required
Sample output
A

COMPLETE PYTHON PROGRAM

Complete Python implementation

python-grade-calculator.py
Open in compiler
mark = 84
if mark >= 90:
    grade = 'A+'
elif mark >= 80:
    grade = 'A'
elif mark >= 70:
    grade = 'B'
else:
    grade = 'C'
print(grade)

GUIDED CODE TOUR • NOT LIVE EXECUTION

Study the program line by line

Use the real compiler button above to run and debug with different inputs.

CURRENT STEP

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SELECTED LINE

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EXPECTED OUTPUT FOR THE SAMPLE

A
0%Step 0 of 0

PROGRAM EXPLANATION

Algorithm and explanation

  1. Initialize the sample values used to calculate a grade.
  2. Apply if-elif and Range classification to compute the required result.
  3. Display the result for calculate a grade and compare it with the documented sample output.

This example of calculate a grade computes the result directly from the prepared sample data. It demonstrates if-elif and Range classification and prints a deterministic result that can be checked against the sample output.

EFFICIENCY

Time and space complexity

Time complexity

O(1)

Auxiliary space

O(1)

DEBUGGING CHECKLIST

Common mistakes

Check this

For calculate a grade, keep the data shape and value types consistent with if-elif.

Check this

Keep every dependent statement inside the correct indented Python block.

Check this

Verify the final if-elif and Range classification result against the sample before trying new data.

Try it yourself

Practice: Run the program with the sample input, predict its output, and then test one boundary case of your own.