Debugging a request/response in Python flask

I am new to python2 flask & I am tasked to pretty print & save the entire HTTP request and response to file. I don't quite understand how to print/inspect the request object, let alone the response.

from flask import Flask, request
app = Flask(__name__)

@app.route('/')
def hi():
    print (request)
    return 'oh hai'

if __name__ == '__main__':
    app.run(debug=True)

Any tips? Each request/response should be one file.