Invalid comparison between dtype=datetime64[ns] and date

Invalid Comparison between dtype=datetime64[ns] and date

This error occurs when you try to compare a datetime object with a date object in Python. Python treats datetime and date objects differently, and comparing them directly can cause this type of error.
To better understand this issue, let’s see an example:

import datetime
from datetime import date

datetime_obj = datetime.datetime.now()
date_obj = date.today()

if datetime_obj == date_obj:  # Comparing datetime object with date object
    print("The objects are equal.")
else:
    print("The objects are not equal.")
  

Running the code above would result in the “TypeError: Invalid comparison between dtype=datetime64[ns] and date” error message.
The reason for this error is that the “==” operator is trying to compare different types of objects: a datetime object (datetime64[ns]) and a date object.
To fix this error, you need to either convert the datetime object to a date object or vice versa before comparing them.
Here’s an updated example:

import datetime
from datetime import date

datetime_obj = datetime.datetime.now()
date_obj = date.today()

# Converting datetime object to date object
datetime_to_date = datetime_obj.date()

if datetime_to_date == date_obj:  # Comparing two date objects
    print("The objects are equal.")
else:
    print("The objects are not equal.")
  

In the updated example, we use the .date() method to extract the date part from the datetime object.
Now the two objects being compared have the same type (date). Running this code should not result in the “Invalid comparison” error.