Difference between revisions of "Python:JSON"
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(Created page with ";import json :Enable json functions ;json.dumps(dict, indent=4) :Return the dict nicely structured. Indent each level with 4 spaces. :Can be used on other datatypes too.") |
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| − | ;import json | + | [[Category:Python]] |
| − | :Enable json functions | + | ;import [https://docs.python.org/3/library/json.html json] |
| + | :Enable json functions. The json module is standard available (no installation needed) | ||
| + | ;json.loads(<jsonstring>) | ||
| + | :Return <jsonstring> as [[Python:DataTypes#Dictionary_or_dict|dict]]. | ||
| + | ;json.load(<fh>) | ||
| + | :Read a jsonstring from the file opened on <fh> and return it as [[Python:DataTypes#Dictionary_or_dict|dict]]. | ||
| + | <syntaxhighlight lang=python> | ||
| + | import json | ||
| + | with open(filename) as fh: | ||
| + | data = json.load(fh) | ||
| + | </syntaxhighlight> | ||
| + | |||
| + | :Read a jsonstring from an url into a [[Python:DataTypes#Dictionary_or_dict|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. | ||
;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. |
| − | : | + | ;json.dump(dict, fh, indent=4) |
| + | :Dumps to the [[Python:Files|file opened]] on filehandle fh. | ||
Latest revision as of 16:27, 18 October 2021
- import json
- Enable json functions. The json module is standard available (no installation needed)
- json.loads(<jsonstring>)
- Return <jsonstring> as dict.
- json.load(<fh>)
- Read a jsonstring from the file opened on <fh> and return it as dict.
import json
with open(filename) as fh:
data = json.load(fh)
- Read a jsonstring from an url into a dictionary.
import json
import requests
response = json.loads(requests.get(url).text)
for key in response:
print(key)
Below can be used on datatypes like lists and tuples too, not on sets.
- json.dumps(dict, indent=4)
- Convert a dict into a json string nicely formatted. Indent each level with 4 spaces.
- json.dump(dict, fh, indent=4)
- Dumps to the file opened on filehandle fh.