openshift-docs/modules/serverless-invoking-python-functions.adoc

// Module included in the following assemblies
//
// * serverless/functions/serverless-developing-python-functions.adoc

:_content-type: CONCEPT
[id="serverless-invoking-python-functions_{context}"]
= About invoking Python functions

Python functions can be invoked with a simple HTTP request. When an incoming request is received, functions are invoked with a `context` object as the first parameter.

The `context` object is a Python class with two attributes:

* The `request` attribute is always present, and contains the Flask `request` object.
* The second attribute, `cloud_event`, is populated if the incoming request is a `CloudEvent` object.

Developers can access any `CloudEvent` data from the context object.

.Example context object
[source,python]
----
def main(context: Context):
    """
    The context parameter contains the Flask request object and any
    CloudEvent received with the request.
    """
    print(f"Method: {context.request.method}")
    print(f"Event data {context.cloud_event.data}")
    # ... business logic here
----