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Marcin Wosinek
Marcin Wosinek

Posted on • Originally published at how-to.dev

How to start a server with python framework Pyramid

#python #backend

This article shows how to start a simple server with Pyramid.

Requirements

First, you need the following programs available on your system:

  • python3
  • pip
  • venv

It all should be provided with a python package in your operating system.

Starting virtual environment

To avoid polluting the global scope with package versions, we can start & use the virtual environment:

$ python3 -m venv .venv
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When successful, this command creates .venv folder & produces no output.

To switch to the virtual env:

$ source .venv/bin/activate (.venv) $
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The current console will use .venv as the location for packages managed by pip.

Installing the dependency 

(.venv) $ pip install pyramid Collecting pyramid Downloading pyramid-2.0-py3-none-any.whl (246 kB) |████████████████████████████████| 246 kB 2.4 MB/s Collecting hupper>=1.5 Using cached hupper-1.10.3-py2.py3-none-any.whl (26 kB) Requirement already satisfied: setuptools in ./.venv/lib/python3.8/site-packages (from pyramid) (44.0.0) Collecting webob>=1.8.3 Using cached WebOb-1.8.7-py2.py3-none-any.whl (114 kB) Collecting zope.interface>=3.8.0 Using cached zope.interface-5.4.0-cp38-cp38-manylinux2010_x86_64.whl (259 kB) Collecting plaster-pastedeploy Using cached plaster_pastedeploy-0.7-py2.py3-none-any.whl (7.8 kB) Collecting translationstring>=0.4 Using cached translationstring-1.4-py2.py3-none-any.whl (15 kB) Collecting venusian>=1.0 Using cached venusian-3.0.0-py3-none-any.whl (13 kB) Collecting plaster Using cached plaster-1.0-py2.py3-none-any.whl (14 kB) Collecting zope.deprecation>=3.5.0 Using cached zope.deprecation-4.4.0-py2.py3-none-any.whl (10 kB) Collecting PasteDeploy>=2.0 Using cached PasteDeploy-2.1.1-py2.py3-none-any.whl (17 kB) Installing collected packages: hupper, webob, zope.interface, PasteDeploy, plaster, plaster-pastedeploy, translationstring, venusian, zope.deprecation, pyramid Successfully installed PasteDeploy-2.1.1 hupper-1.10.3 plaster-1.0 plaster-pastedeploy-0.7 pyramid-2.0 translationstring-1.4 venusian-3.0.0 webob-1.8.7 zope.deprecation-4.4.0 zope.int erface-5.4.0
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Code

I use a slightly modified example from the documentation. server.py:

from wsgiref.simple_server import make_server from pyramid.config import Configurator from pyramid.response import Response def hello_world(request): return Response('Hello World!') if __name__ == '__main__': HOST = '0.0.0.0' PORT = 6543 with Configurator() as config: config.add_route('hello', '/') config.add_view(hello_world, route_name='hello') app = config.make_wsgi_app() server = make_server(HOST, PORT, app) print(f'Starting server at {HOST}:{PORT}') server.serve_forever()
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I moved HOST & PORT into variables and logged them to the console. Otherwise, the server was quietly working without notifying the user about its presence.

Running server 

(.venv) $ python3 server.py Starting server at 0.0.0.0:6543
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The server works as expected:

pyramid-hello-world.png

Links

Summary

We have seen how to start a simple Pyramid server.

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