django check if get parameter exists

In Django, you can check if a GET parameter exists by using the request.GET.get() method. This method will return None if the parameter does not exist.

Here's an example:

if request.GET.get('parameter_name') is not None:
    # Parameter exists, do something
else:
    # Parameter does not exist, do something else

Explanation: 1. request.GET.get('parameter_name'): This retrieves the value of the specified GET parameter. If the parameter does not exist, it returns None. 2. if ... else ...: This is a conditional statement that checks if the parameter exists and executes the corresponding code block based on the result.