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PYTHON PROGRAM • MODULES, DATES & REGULAR EXPRESSIONS

Find the Difference Between Dates in Python

Learn find the difference between dates in python with a short, executable Python example.

Beginnerdatetimedelta

PROBLEM UNDERSTANDING

Input and expected output

Sample input
No input required
Sample output
9

COMPLETE PYTHON PROGRAM

Complete Python implementation

python-date-difference.py
Open in compiler
from datetime import date
start = date(2026, 9, 1)
end = date(2026, 9, 10)
print((end - start).days)

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

9
0%Step 0 of 0

PROGRAM EXPLANATION

Algorithm and explanation

  1. Import the required standard-library tools and prepare the sample data for find the difference between dates.
  2. Apply date and timedelta to compute the required result.
  3. Display the result for find the difference between dates and compare it with the documented sample output.

This example of find the difference between dates computes the result directly from the prepared sample data. It demonstrates date and timedelta 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 find the difference between dates, keep the data shape and value types consistent with date.

Check this

Apply date in the same order shown by the algorithm; changing the order can change the result.

Check this

Verify the final date and timedelta 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.