Explain the Python Datetime with Example.

1. What is `datetime` in Python?

The datetime module in Python allows you to work with dates and times — creating, formatting, manipulating, and comparing them.

To use it:

import datetime

2. Creating Date and Time Objects

You can create specific date/time objects using datetime.date, datetime.time, or datetime.datetime.

Date object

from datetime import date

today = date.today()
print("Today's date:", today)

custom_date = date(2025, 10, 9)
print("Custom date:", custom_date)

Output:

Today's date: 2025-10-09
Custom date: 2025-10-09

Datetime object

from datetime import datetime

now = datetime.now()
print("Current datetime:", now)

custom_datetime = datetime(2025, 10, 9, 10, 30, 45)
print("Custom datetime:", custom_datetime)

Output:

Current datetime: 2025-10-09 10:45:22.540123
Custom datetime: 2025-10-09 10:30:45

3. Getting Components (Year, Month, etc.)

You can extract parts of the date/time:

from datetime import datetime

now = datetime.now()

print("Year:", now.year)
print("Month:", now.month)
print("Day:", now.day)
print("Hour:", now.hour)
print("Minute:", now.minute)
print("Second:", now.second)

Output:

Year: 2025
Month: 10
Day: 9
Hour: 10
Minute: 45
Second: 22

4. Date Arithmetic (Add / Subtract Time)

You can add or subtract time using timedelta.

from datetime import datetime, timedelta

today = datetime.now()
print("Today:", today)

tomorrow = today + timedelta(days=1)
yesterday = today - timedelta(days=1)
after_2_hours = today + timedelta(hours=2)

print("Tomorrow:", tomorrow)
print("Yesterday:", yesterday)
print("After 2 hours:", after_2_hours)

Output:

Today: 2025-10-09 10:45:22
Tomorrow: 2025-10-10 10:45:22
Yesterday: 2025-10-08 10:45:22
After 2 hours: 2025-10-09 12:45:22

5. Formatting Dates and Times

Use .strftime() to format datetime into strings.

from datetime import datetime

now = datetime.now()

formatted = now.strftime("%Y-%m-%d %H:%M:%S")
print("Formatted datetime:", formatted)

# Common patterns
print(now.strftime("%d/%m/%Y"))  # DD/MM/YYYY
print(now.strftime("%B %d, %Y"))  # Month name DD, YYYY
print(now.strftime("%I:%M %p"))  # 12-hour clock with AM/PM

Output:

Formatted datetime: 2025-10-09 10:45:22
09/10/2025
October 09, 2025
10:45 AM

6. Parsing String to Datetime

Use datetime.strptime() to convert string → datetime.

from datetime import datetime

date_str = "09/10/2025 14:30"
parsed_date = datetime.strptime(date_str, "%d/%m/%Y %H:%M")

print("Parsed datetime:", parsed_date)

Output:

Parsed datetime: 2025-10-09 14:30:00

7. Getting UTC Time and Timezones

Python’s datetime can handle UTC and time zones using timezone.

from datetime import datetime, timezone, timedelta

utc_now = datetime.now(timezone.utc)
print("UTC time:", utc_now)

# Convert UTC to IST (UTC+5:30)
ist = utc_now + timedelta(hours=5, minutes=30)
print("IST time:", ist)

Output:

UTC time: 2025-10-09 05:15:22+00:00
IST time: 2025-10-09 10:45:22+05:30

8. Comparing Dates

You can directly compare two datetime or date objects:

from datetime import date

d1 = date(2025, 10, 9)
d2 = date(2025, 12, 25)

if d1 < d2:
    print("d1 is before d2")
else:
    print("d1 is after d2")

Output:

d1 is before d2

9. Example — Days Until an Event

from datetime import date

today = date.today()
event_date = date(2025, 12, 31)
remaining = event_date - today

print("Days until New Year:", remaining.days)

Output:

Days until New Year: 83

10. Example — Get Current Time in 12-Hour Format

from datetime import datetime

now = datetime.now()
print(now.strftime("Current Time: %I:%M:%S %p"))

Output:

Current Time: 10:45:22 AM

Summary

Function/Feature	Description
`datetime.now()`	Get current date and time
`datetime.today()`	Current local date
`timedelta(days=1)`	Time difference
`strftime()`	Format datetime → string
`strptime()`	Parse string → datetime
`timezone.utc`	Handle UTC time

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Explain the Python Datetime with Example.

Can you answer this question?

2 Answers

1. What is datetime in Python?

2. Creating Date and Time Objects

Date object

Datetime object

3. Getting Components (Year, Month, etc.)

4. Date Arithmetic (Add / Subtract Time)

5. Formatting Dates and Times

6. Parsing String to Datetime

7. Getting UTC Time and Timezones

8. Comparing Dates

9. Example — Days Until an Event

10. Example — Get Current Time in 12-Hour Format

Summary

1. What is `datetime` in Python?