Check If DateTime Is Timezone Aware In Python

This tutorial will discuss about a unique way to check if datetime is timezone aware in Python.

We can create a datetime objects without the timezone information or with the timezone information in Python

therefore, manytimes we need to make a decision on the fact that the datetime object has timezone information on not. To verify this we have created a method,

def is_timezone_aware(dt):
    # Checks if a given datetime object is timezone aware.
    # Returns True if the datetime object is timezone aware, False otherwise.
    return dt.tzinfo is not None and dt.tzinfo.utcoffset(dt) is not None

It accepts a datetime object as an argument and check if the given datetime object is timezone aware or not. It returns True if the datetime object has the timezone information and False otherwise. For that, we will use the tzinfo attribute from the datetime module. If it is not None then we will call the tzinfo.utcoffset() method with this datetime object to check if it is None or not. If both are not None, then it means that datetime object has the timezone information, it means it is timezone aware.

Let’s see the complete example,

def is_timezone_aware(dt):
    # Checks if a given datetime object is timezone aware.
    # Returns True if the datetime object is timezone aware, False otherwise.
    return dt.tzinfo is not None and dt.tzinfo.utcoffset(dt) is not None


from datetime import datetime, timezone, timedelta

# Example 1
# Create a timezone-aware datetime object
dtObj1 = datetime.now(timezone(timedelta(hours=-5)))

print(dtObj1)
print(is_timezone_aware(dtObj1)) # Output: True

# Example 2
# Create a timezone-naive datetime object
dtObj2 = datetime.now()

print(dtObj2)
print(is_timezone_aware(dtObj2)) # Output: False

Output

2023-04-27 02:41:47.902660-05:00
True
2023-04-27 07:41:47.902693
False

Summary

We learned about a way to check if Datetime Is Timezone Aware In Python.