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| some_object = {"a": "a", "b": [1, 2.1]} some_string = json.dumps(some_object) # '{"a": "a", "b": [1, 2.1]}' assert some_object == json.loads(some_string) # True |
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| JSON and Python objects are translated as: ||'''JSON''' ||'''Python'''|| ||object ||dict || ||array ||list || ||string ||str || ||number (int) ||int || ||number (real)||float || ||`true` ||`True` || ||`false` ||`False` || ||`null` ||`None` || ---- |
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| Serialize an object and write it to a file. {{{ with open('example.json', 'w') as f: json.dump(['example'], f) }}} Can also be used with a filestream object. {{{ from io import StringIO io = StringIO() json.dump(['example'], io) }}} ---- |
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Serialize an object into a JSON-encoded string. All dictionary keys are coerced into strings for this serialization. This may break roundtrip conversions. ---- |
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| Deserialize a JSON-encoded file. {{{ with open('example.json', 'r') as f: some_object = json.load(f) }}} If the file is opened as a binary file (i.e. 'rb' instead of 'r'), it should be UTF-{8,16,32} encoded. ---- |
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| --- | Deserialize a JSON-encoded string into an object. The string can be any of `str`, `byte`,` or `bytearray` types, as long as it is UTF-{8,16,32} encoded. ---- |
Python Json
json is a module that supports encoding and decoding JSON files.
Example
some_object = {"a": "a", "b": [1, 2.1]}
some_string = json.dumps(some_object) # '{"a": "a", "b": [1, 2.1]}'
assert some_object == json.loads(some_string) # True
Usage
JSON and Python objects are translated as:
JSON |
Python |
object |
dict |
array |
list |
string |
str |
number (int) |
int |
number (real) |
float |
true |
True |
false |
False |
null |
None |
Dump
Serialize an object and write it to a file.
with open('example.json', 'w') as f:
json.dump(['example'], f)Can also be used with a filestream object.
from io import StringIO io = StringIO() json.dump(['example'], io)
DumpS
Serialize an object into a JSON-encoded string.
All dictionary keys are coerced into strings for this serialization. This may break roundtrip conversions.
Load
Deserialize a JSON-encoded file.
with open('example.json', 'r') as f:
some_object = json.load(f)If the file is opened as a binary file (i.e. 'rb' instead of 'r'), it should be UTF-{8,16,32} encoded.
LoadS
Deserialize a JSON-encoded string into an object.
The string can be any of str, byte, or bytearray` types, as long as it is UTF-{8,16,32} encoded.
See also
Python json module documentation