Rainsbrook - python
https://www.rainsbrook.co.uk/wiki/
2026-04-30T18:44:30+00:00Rainsbrook
https://www.rainsbrook.co.uk/wiki/
https://www.rainsbrook.co.uk/wiki/lib/exe/fetch.php?media=wiki:dokuwiki.svgtext/html2025-08-07T09:10:32+00:00Anonymous (anonymous@undisclosed.example.com)flask-api
https://www.rainsbrook.co.uk/wiki/doku.php?id=python:flask-api&rev=1754557832&do=diff
Output result from API
The BASH below is not specific to Flask, but the MySQL probably is.
Debugging API calls
Send to this URL to see just what you have actually sent to help any debugging.
<https://httpbin.org/anything>
Send to POST test data
curl -i -X POST \
-H 'Content-Type: application/json' \
-d "{\"auth_token\":\"${AUTH_TOKEN}\", \"user_id\":\"${EMAIL}\", \"file_ref\":\"File.odt\", \"uuid\":\"${UUID}\"}" \
http://192.168.11.7:5000/apitext/html2024-05-30T14:50:27+00:00Anonymous (anonymous@undisclosed.example.com)flask-mysql
https://www.rainsbrook.co.uk/wiki/doku.php?id=python:flask-mysql&rev=1717080627&do=diff
MySQL connector
Also works with MariaDB
Boolean
Get boolean true/false back, db stores 1 or 0
statement = "SELECT IF(login_status, 'true', 'false') from user_model WHERE user_id = %s;"
session_name = session["username"]
mycursor.execute(statement, (session_name,))text/html2024-05-30T14:50:44+00:00Anonymous (anonymous@undisclosed.example.com)flask-templates
https://www.rainsbrook.co.uk/wiki/doku.php?id=python:flask-templates&rev=1717080644&do=diff
Templates
base.html template:-
<!doctype html>
<html lang="en-gb">
<head>
<link rel="icon" type="image/x-icon" href="/static/globe.ico">
{% block header %}
{% endblock %}
<meta charset="utf-8">
<style>
fieldset {
background-color: #eeeeee;
width: 60% }
legend {
background-color: gray;
color: white;
padding: 5px 10px; }
input {
margin: 5px; }
</style>
</head>
<body>
<img src="/static/globe.jpg" width="25…text/html2024-05-30T14:51:21+00:00Anonymous (anonymous@undisclosed.example.com)flask
https://www.rainsbrook.co.uk/wiki/doku.php?id=python:flask&rev=1717080681&do=diff
Python Flask
Templates
API
MySQL connector
Running Flask on all interfaces
Adding --host binds to all interfaces, not just localhost.
$ flask run --host=0.0.0.0
* Debug mode: off
WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.
* Running on all addresses (0.0.0.0)
* Running on http://127.0.0.1:5000
* Running on http://10.1.2.3:5000
Press CTRL+C to quittext/html2024-09-04T10:43:05+00:00Anonymous (anonymous@undisclosed.example.com)python-boto3
https://www.rainsbrook.co.uk/wiki/doku.php?id=python:python-boto3&rev=1725446585&do=diff
Python - boto3 library for AWS
Boto3 is AWS's python library for interacting with the AWS API. As everything (even the console under the surface) is API based, boto3 allows you to do pretty much everything you can do elsewhere. It may not always be up to date enough to follow new feateres, so ensure you have a up to date copy of the library withtext/html2025-02-14T10:48:21+00:00Anonymous (anonymous@undisclosed.example.com)python-code
https://www.rainsbrook.co.uk/wiki/doku.php?id=python:python-code&rev=1739530101&do=diff
Python code snippets
FOR loop
Looping through all the items in a dictionary.
Print all the keys
exampledict = {
"class": "Modified Hall",
"engine": "Witherslack Hall",
"built": "1948"
}
for x in thisdict:
print(x)
class
engine
builttext/html2025-11-05T11:55:26+00:00Anonymous (anonymous@undisclosed.example.com)python-data-struct
https://www.rainsbrook.co.uk/wiki/doku.php?id=python:python-data-struct&rev=1762343726&do=diff
Python Data Structures
Summary
[ ] = List
{ } = Dictionary
( ) = Tuple
Boolean:- boolean_true_of_false
List
Identified by square brackets and uses comma as seperator between elements. A list element is looked up by it's position in the list.
list = ['value1', 'value2']
Remember, list indices start attext/html2025-12-02T18:05:20+00:00Anonymous (anonymous@undisclosed.example.com)python
https://www.rainsbrook.co.uk/wiki/doku.php?id=python:python&rev=1764698720&do=diff
Python
“Eventually I got better -- I started making my own mistakes.”
Fun reason to learn Python:-
<https://www.4dbrix.com/documentation/python/>
Python Game:-
<https://www.twilio.com/quest>
Rather more serious tutorial:-
<https://docs.python.org/3/tutorial/>
Flask application framework
Install pip3
# apt-cache search python3-pip
python3-pip - Python package installer
root@sysmgmt:~# apt-get install python3-pip
Reading package lists... Done
Building dependency tree
Readin…text/html2025-03-14T14:04:46+00:00Anonymous (anonymous@undisclosed.example.com)runcommand
https://www.rainsbrook.co.uk/wiki/doku.php?id=python:runcommand&rev=1741961086&do=diff
Run Command
The subprocess module has built-in protection against command execution:
from subprocess import call
# An invocation of the call(...) function will ensure only a single
# command is run.
call(["ls", "-l"])
This protection can be disabled