How Can I Measure the Execution Time of a Python Program?

Measuring Execution Time of Python Programs

In Python programming, determining the execution time of a program can be crucial for performance optimization. Here's a comprehensive solution to measure the execution time of any Python program:

Using the Time Module

The Python standard library includes the time module, which provides various methods to manage time-related tasks. To measure the execution time of a program, you can use the following steps:

1. Import the time module: Begin by importing the time module into your program.
2. Start the timer: Call the time.time() function before the program starts executing its main logic. This records the current system time as a floating-point value in seconds.
3. Run the program: Execute the main logic of your program.
4. Stop the timer: Call the time.time() function again after the program finishes running.
5. Calculate the execution time: Subtract the start time from the stop time to determine the total execution time in seconds.
6. Display the result: Print the execution time using the print() function.

Example Code

import time

start_time = time.time()

# Run the main logic of your program here

end_time = time.time()

total_execution_time = end_time - start_time

print(f"--- {total_execution_time} seconds ---")

This code assumes that your program takes at least a tenth of a second to run. If your program finishes much faster, you may need to use the perf_counter function from the time module for more precise timing.

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