Last Updated : 23 Jul, 2025
Serialization is the process of encoding the from naive data type to JSON format. The Python module json converts a Python dictionary object into JSON object, and list and tuple are converted into JSON array, and int and float converted as JSON number, None converted as JSON null.
Let’s take a look at how we serialize Python data to JSON format with these methods:
json.dump() method can be used for writing to JSON file. Write data to a file-like object in json format.
Syntax: json.dump(dict, file_pointer)
Parameters:
- dictionary – name of dictionary which should be converted to JSON object.
- file pointer – pointer of the file opened in write or append mode.
Below is the implementation:
Converting python object and writing into json file.
Python
# import module
import json
# Data to be written
data = {
"user": {
"name": "satyam kumar",
"age": 21,
"Place": "Patna",
"Blood group": "O+"
}
}
# Serializing json and
# Writing json file
with open( "datafile.json" , "w" ) as write:
json.dump( data , write )
Output:
data_file.json json.dumps()json.dumps() method can convert a Python object into a JSON string.
Syntax: json.dumps(dict)
Parameters:
- dictionary – name of dictionary which should be converted to JSON object.
Below is the implementation:
Converting python object into json string.
Python
# import module
import json
# Data to be written
data = {
"user": {
"name": "satyam kumar",
"age": 21,
"Place": "Patna",
"Blood group": "O+"
}
}
# Serializing json
res = json.dumps( data )
print( res )
Output:
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