Python:JSON - Revision history

Hdridder at 11:58, 27 January 2025

2025-01-27T11:58:24Z

← Older revision		Revision as of 11:58, 27 January 2025
Line 33:		Line 33:
	;json.dumps(list(set), indent='text ', separators=("",""), sort_keys=True)		;json.dumps(list(set), indent='text ', separators=("",""), sort_keys=True)
	:list set per line with 'text ' prepended and no separators. Seperators is a tuple (line-separator, key-value-separator), default is (",", ": ")		:list set per line with 'text ' prepended and no separators. Seperators is a tuple (line-separator, key-value-separator), default is (",", ": ")

			Not all objecttypes can be dumps by json e.g. Decimals and datetime objects. I found this on stackexchange[https://stackoverflow.com/questions/1960516/python-json-serialize-a-decimal-object]

			If you want to dump the exact value return as string, else as float.
			<syntaxhighlight lang=python>

			class DecimalEncoder(json.JSONEncoder):
			''' To make Decimals json dumpable
			json.dumps({<object to dump>, cls=DecimalEncoder)'
			'''
			import json
			import decimal
			from datetime import datetime
			def default(self, o):
			if isinstance(o, decimal.Decimal):
			#return (str(o))
			return (float(o))
			elif isinstance(o, datetime):
			return (str(o))
			return super(DecimalEncoder, self).default(o)
			</syntaxhighlight>

2025-01-14T19:12:04Z

← Older revision		Revision as of 19:12, 14 January 2025
Line 31:		Line 31:
	;json.dump(dict, fh, indent=4)		;json.dump(dict, fh, indent=4)
	:Dumps to the [[Python:Files\|file opened]] on filehandle fh.		:Dumps to the [[Python:Files\|file opened]] on filehandle fh.
	;json.dumps(list(set), indent='text ', separators=('',''), sort_keys=True)		;json.dumps(list(set), indent='text ', separators=("",""), sort_keys=True)
	:list set per line with 'text ' prepended and no separators.		:list set per line with 'text ' prepended and no separators. Seperators is a tuple (line-separator, key-value-separator), default is (",", ": ")

2024-10-28T16:15:13Z

← Older revision		Revision as of 16:15, 28 October 2024
Line 31:		Line 31:
	;json.dump(dict, fh, indent=4)		;json.dump(dict, fh, indent=4)
	:Dumps to the [[Python:Files\|file opened]] on filehandle fh.		:Dumps to the [[Python:Files\|file opened]] on filehandle fh.
			;json.dumps(list(set), indent='text ', separators=('',''), sort_keys=True)
			:list set per line with 'text ' prepended and no separators.

2021-10-18T14:27:29Z

← Older revision		Revision as of 14:27, 18 October 2021
Line 13:		Line 13:
	</syntaxhighlight>		</syntaxhighlight>

	:Read a jsonstring from an url ~~in to~~ a dictionary.		:Read a jsonstring from an url into a [[Python:DataTypes#Dictionary_or_dict\|dictionary]].
	<syntaxhighlight lang=python>		<syntaxhighlight lang=python>
	import json		import json

2020-05-23T12:45:31Z

← Older revision		Revision as of 12:45, 23 May 2020
Line 6:		Line 6:
	:Return <jsonstring> as [[Python:DataTypes#Dictionary_or_dict\|dict]].		:Return <jsonstring> as [[Python:DataTypes#Dictionary_or_dict\|dict]].
	;json.load(<fh>)		;json.load(<fh>)
	:Read a ~~jsonstinrg~~ from the file opened on <fh> and return it as [[Python:DataTypes#Dictionary_or_dict\|dict]].		:Read a jsonstring from the file opened on <fh> and return it as [[Python:DataTypes#Dictionary_or_dict\|dict]].
	<syntaxhighlight lang=python>		<syntaxhighlight lang=python>
	import json		import json
Line 12:		Line 12:
	data = json.load(fh)		data = json.load(fh)
	</syntaxhighlight>		</syntaxhighlight>

			:Read a jsonstring from an url in to a dictionary.
			<syntaxhighlight lang=python>
			import json
			import requests

			response = json.loads(requests.get(url).text)

			for key in response:
			print(key)

			</syntaxhighlight>


	Below can be used on [[Python:DataTypes\|datatypes]] like lists and tuples too, not on sets.		Below can be used on [[Python:DataTypes\|datatypes]] like lists and tuples too, not on sets.

2019-06-09T19:29:39Z

← Older revision		Revision as of 19:29, 9 June 2019
Line 3:		Line 3:
	:Enable json functions. The json module is standard available (no installation needed)		:Enable json functions. The json module is standard available (no installation needed)

	;json.load(<~~data~~>)		;json.loads(<jsonstring>)
	:~~Return~~ <~~data~~> as [[Python:DataTypes#Dictionary_or_dict\|dict]].		:Return <jsonstring> as [[Python:DataTypes#Dictionary_or_dict\|dict]].
			;json.load(<fh>)
			:Read a jsonstinrg from the file opened on <fh> and return it as [[Python:DataTypes#Dictionary_or_dict\|dict]].
	<syntaxhighlight lang=python>		<syntaxhighlight lang=python>
	import json		import json

2019-06-09T18:38:04Z

← Older revision		Revision as of 18:38, 9 June 2019
Line 3:		Line 3:
	:Enable json functions. The json module is standard available (no installation needed)		:Enable json functions. The json module is standard available (no installation needed)

	~~Read a~~ json ~~file and return it~~ as [[Python:DataTypes#Dictionary_or_dict\|dict]].		;json.load(<data>)
			:Return <data> as [[Python:DataTypes#Dictionary_or_dict\|dict]].
	<syntaxhighlight lang=python>		<syntaxhighlight lang=python>
	import json		import json

2019-05-05T08:43:15Z

← Older revision		Revision as of 08:43, 5 May 2019
Line 10:		Line 10:
	</syntaxhighlight>		</syntaxhighlight>

	~~Can~~ be used on [[Python:DataTypes\|datatypes]] like lists and tuples too, not on sets.		Below can be used on [[Python:DataTypes\|datatypes]] like lists and tuples too, not on sets.
	;json.dumps(dict, indent=4)		;json.dumps(dict, indent=4)
	:Convert a dict into a json string nicely formatted. Indent each level with 4 spaces.		:Convert a dict into a json string nicely formatted. Indent each level with 4 spaces.
	;json.dump(dict, fh, indent=4)		;json.dump(dict, fh, indent=4)
	:Dumps to the [[Python:Files\|file opened]] on filehandle fh.		:Dumps to the [[Python:Files\|file opened]] on filehandle fh.

2019-05-05T08:42:45Z

← Older revision		Revision as of 08:42, 5 May 2019
Line 12:		Line 12:
	Can be used on [[Python:DataTypes\|datatypes]] like lists and tuples too, not on sets.		Can be used on [[Python:DataTypes\|datatypes]] like lists and tuples too, not on sets.
	;json.dumps(dict, indent=4)		;json.dumps(dict, indent=4)
	:Convert a dict into a json string nicely ~~structured~~. Indent each level with 4 spaces.		:Convert a dict into a json string nicely formatted. Indent each level with 4 spaces.
	;json.dump(dict, fh, indent=4)		;json.dump(dict, fh, indent=4)
	:Dumps to the [[Python:Files\|file opened]] on filehandle fh.		:Dumps to the [[Python:Files\|file opened]] on filehandle fh.

2019-05-05T08:42:00Z

← Older revision		Revision as of 08:42, 5 May 2019
Line 10:		Line 10:
	</syntaxhighlight>		</syntaxhighlight>

			Can be used on [[Python:DataTypes\|datatypes]] like lists and tuples too, not on sets.
	;json.dumps(dict, indent=4)		;json.dumps(dict, indent=4)
	:Convert a dict into a json string nicely structured. Indent each level with 4 spaces.		:Convert a dict into a json string nicely structured. Indent each level with 4 spaces.
	:~~Can be used on other~~ [[Python:~~DataTypes~~\|~~datatypes~~]] ~~too~~.		;json.dump(dict, fh, indent=4)
			:Dumps to the [[Python:Files\|file opened]] on filehandle fh.