#Middleware included in Rack
| Name | Description |
|---|---|
| URLMap | to route to multiple applications inside the same process. |
| CommonLogger | for creating Apache-style logfiles. |
| ShowExceptions | for catching unhandled exceptions and presenting them in a nice and helpful way with clickable backtrace. |
| File | for serving static files. |
| Static | intercepts requests for static files |
| Deflater | enables compression of http responses. |
python -c "import psycopg2; print psycopg2.__version__"
http://initd.org/psycopg/docs/extensions.html#psycopg2.extensions.Diagnostics
sudo pip install psycopg2 --upgrade
Error: You need to install postgresql-server-dev-X.Y for building a server-side extension or libpq-dev for building a client-side application.
Your Flask app object implements the __call__ method, which means it can be called like a regular function.
When your WSGI container receives a HTTP request it calls your app with the environ dict and the start_response callable.
WSGI is specified in PEP 0333.
The two relevant environ variables are:
SCRIPT_NAME
The initial portion of the request URL's "path" that corresponds to the application object, so that the application knows its virtual "location". This may be an empty string, if the application corresponds to the "root" of the server.
| class ConfigDict(): | |
| comment_delimiters = ('#', ';') | |
| def __init__(self, path): | |
| self.path = path | |
| self.lines = None | |
| self.data = None | |
| def read(self): | |
| with open(self.path) as f: |