Davrot at 16:12, 17 October 2025

2025-10-17T16:12:41Z

← Older revision		Revision as of 16:12, 17 October 2025
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	~~== The goal ==~~
	A combination of JSON (JavaScript Object Notation) file and dictionaries allows to organize parameters in an external file.		A combination of JSON (JavaScript Object Notation) file and dictionaries allows to organize parameters in an external file.

Davrot: Created page with " == The goal == A combination of JSON (JavaScript Object Notation) file and dictionaries allows to organize parameters in an external file. Questions to [mailto:davrot@uni-bremen.de David Rotermund] == [https://docs.python.org/3/library/json.html json – JSON encoder and decoder] == === [https://docs.python.org/3/library/json.html#json.dump dump] === import json a = dict(one=1, two=2, three=3) with open("data_out.json", "w") as file:..."

2025-10-15T13:27:43Z

Created page with " == The goal == A combination of JSON (JavaScript Object Notation) file and dictionaries allows to organize parameters in an external file. Questions to [mailto:davrot@uni-bremen.de David Rotermund] == [https://docs.python.org/3/library/json.html json – JSON encoder and decoder] == === [https://docs.python.org/3/library/json.html#json.dump dump] === <syntaxhighlight lang="python">import json a = dict(one=1, two=2, three=3) with open("data_out.json", "w") as file:..."

New page

== The goal ==
A combination of JSON (JavaScript Object Notation) file and dictionaries allows to organize parameters in an external file.

Questions to [mailto:davrot@uni-bremen.de David Rotermund]

== [https://docs.python.org/3/library/json.html json – JSON encoder and decoder] ==

=== [https://docs.python.org/3/library/json.html#json.dump dump] ===
<syntaxhighlight lang="python">import json

a = dict(one=1, two=2, three=3)

with open("data_out.json", "w") as file:
json.dump(a, file)</syntaxhighlight>Content of data_out.json:<syntaxhighlight lang="json">{"one": 1, "two": 2, "three": 3}</syntaxhighlight>

=== [https://docs.python.org/3/library/json.html#json.load load] ===
<syntaxhighlight lang="python">import json

with open("data_out.json", "r") as file:
b = json.load(file)

print(b)</syntaxhighlight>Output:<syntaxhighlight lang="python">{'one': 1, 'two': 2, 'three': 3}</syntaxhighlight>

== [https://github.com/tikitu/jsmin/ jsmin] and [https://docs.python.org/3/library/json.html#json.loads loads] ==
<syntaxhighlight lang="shell">pip install jsmin</syntaxhighlight>Maybe you want to have comments in your config file.

Content of data_in.json:<syntaxhighlight lang="json">// This an important comment...
{
"one": 1,
"two": 2,
"three": 3
}</syntaxhighlight>Note for '''VS Code''': You need to change the filetype from '''JSON''' to '''JSON with comments'''. Lower right corner.

The normal JSON functions fails:<syntaxhighlight lang="python">import json

with open("data_in.json", "r") as file:
b = json.load(file)

print(b)</syntaxhighlight>Output:<syntaxhighlight lang="python">JSONDecodeError: Expecting value: line 1 column 1 (char 0)</syntaxhighlight>With jsmin:<syntaxhighlight lang="python">import json
from jsmin import jsmin

with open("data_in.json", "r") as file:
minified = jsmin(file.read())

b = json.loads(minified)

print(b)</syntaxhighlight>Output:<syntaxhighlight lang="python">{'one': 1, 'two': 2, 'three': 3}</syntaxhighlight>

JSON and dict for parameter files - Revision history

Davrot at 16:12, 17 October 2025