Example
Use a signal's connect method to connect a function to a signal. When a signal is sent, each connected function is called with the sender and any named arguments the signal provides.
from flask import template_rendered
def log_template(sender, template, context, **kwargs):
sender.logger.info(
'Rendered template %(template)r with context %(context)r.',
template=template, context=context
)
template_rendered.connect(log_template)
See the documentation on built-in signals for information about what arguments they provides. A useful pattern is adding a **kwargs argument to catch any unexpected arguments.
