What Are Python Date and Time Operations? See Examples

Python provides the datetime and time modules to handle dates, times, and timestamps. These operations are crucial for time-based calculations, scheduling tasks, logging events, and working with APIs.

from datetime import datetime, date, time, timedelta
import time as t

Why Date and Time Operations Are Important

  • Track and log events in applications
  • Schedule automated tasks
  • Perform date arithmetic for business logic
  • Parse and format date strings for user interfaces

Example 1: Getting Current Date and Time

from datetime import datetime

now = datetime.now()
print("Current Date and Time:", now)
print("Year:", now.year)
print("Month:", now.month)
print("Day:", now.day)

Example 2: Formatting Dates

from datetime import datetime

now = datetime.now()
formatted_date = now.strftime("%d-%m-%Y %H:%M:%S")
print("Formatted Date:", formatted_date)
  • %d – Day, %m – Month, %Y – Year, %H:%M:%S – Time

Example 3: Real-World Scenario – Scheduling Tasks

from datetime import datetime, timedelta

today = datetime.now()
task_date = today + timedelta(days=3)
print("Task should be completed by:", task_date.strftime("%d-%m-%Y"))
  • Useful in project management, reminders, and scheduling

Example 4: Measuring Execution Time

import time

start_time = time.time()
# Some code execution
sum([i**2 for i in range(1000000)])
end_time = time.time()
print(f"Execution Time: {end_time - start_time:.2f} seconds")
  • Important for performance monitoring and optimization

Example 5: Parsing Date Strings

from datetime import datetime

date_str = "2025-12-13 15:30:00"
parsed_date = datetime.strptime(date_str, "%Y-%m-%d %H:%M:%S")
print("Parsed Date:", parsed_date)
  • Common when reading dates from files or APIs

Best Practices

✔ Use datetime for date and time arithmetic
✔ Use strftime and strptime for formatting and parsing
✔ Prefer timedelta for date differences and calculations
✔ Always handle timezone awareness in real-world applications


Conclusion

Python date and time operations allow you to manipulate and format dates efficiently, which is crucial for logging, scheduling, data analysis, and automation in real-world applications.


References

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