werkzeug.middleware.profiler.ProfilerMiddleware

Wrap a WSGI application and profile the execution of each request. Responses are buffered so that timings are more exact.

If stream is given, pstats.Stats are written to it after each request. If profile_dir is given, cProfile data files are saved to that directory, one file per request.

The filename can be customized by passing filename_format. If it is a string, it will be formatted using str.format with the following fields available:

• {method} - The request method; GET, POST, etc.
• {path} - The request path or 'root' should one not exist.
• {elapsed} - The elapsed time of the request.
• {time} - The time of the request.

If it is a callable, it will be called with the WSGI environ dict and should return a filename.

from werkzeug.middleware.profiler import ProfilerMiddleware
app = ProfilerMiddleware(app)