OPC OPC is a software interface standard that allows Windows programs to communicate with industrial hardware devices. OPC is implemented in server/client pairs. The OPC…
Month: August 2018
pywinservice, running a simple Python script as a windows service
Code:
Make a virtualenv, store your code there.
Make a run.py file, in that file you can start / call a database, a webcrawler, http, mail or whatever code you want to execute.
When you are done with coding your scripts, test this:
Make a bat file, that will be started when the service starts (i.e 3 party libraries will start)
First:
- Activate the env: ~\pywinservice\Scripts\activate.bat
Second:
- Call the Python script file, ie run.py python app\run.py runserver
Make some log statments also, always good.
If the test is success:
Download NSSM – the Non-Sucking Service Manager.
- nssm install, navigate to your bat file, give the service a name
Start the service with the name you made
https://docs.djangoproject.com/en/2.0/topics/db/queries/
Our models have now changed and a new model has been added to e-lo.
In RawText, we store the input, in BlobText we store the functions from TextBlob lib. If we remove the instance from the first table, we also need to remove it from the second. Ref on_delete = models.CASCADE
Lets add two instances and view them, then delete them.
http://www.sparknotes.com/philosophy/leviathan/summary/
Leviathan rigorously argues that civil peace and social unity are best achieved by the establishment of a commonwealth through social contract. Hobbes’s ideal commonwealth is ruled by a sovereign power responsible for protecting the security of the commonwealth and granted absolute authority to ensure the common defense. In his introduction, Hobbes describes this commonwealth as an “artificial person” and as a body politic that mimics the human body.
Django API
Once you’ve created your data models, Django automatically gives you a database-abstraction API that lets you create, retrieve, update and delete objects. This document explains how to use this API. Refer to the data model reference for full details of all the various model lookup options.
https://docs.djangoproject.com/en/2.0/topics/db/queries/
So our testmodel is a simple Note where we store text from the user. This is our base for e-lo on web.
We feed e-lo some text and select a of several NLP functions that will be implemented later (Some of them are implemented, but must interfaced with Django, now they are interfaced with class cmd.Cmd([completekey[, stdin[, stdout]]]).
enumerate(): Return an enumerate object. iterable must be a sequence, an iterator, or some other object which supports iteration. The __next__() method of the iterator…
https://docs.python.org/3.5/tutorial/datastructures.html Another useful data type built into Python is the dictionary (see Mapping Types — dict). Dictionaries are sometimes found in other languages as “associative…
https://docs.python.org/3.5/tutorial/datastructures.html A tuple consists of a number of values separated by commas, for instance: On output tuples are always enclosed in parentheses, so that nested…
https://docs.python.org/3.5/tutorial/datastructures.html List comprehensions provide a concise way to create lists. Common applications are to make new lists where each element is the result of some…
https://docs.python.org/3.5/tutorial/datastructures.html The list methods make it very easy to use a list as a stack, where the last element added is the first element retrieved…