Dictionary to JSON Python

• In python JSON (JavascriptObject Notation). In the programming language, the text file is made using the script file.
• We can use many built-in packages which arenamedJSON.
• Before using the packages, we have to import the package in python.
• Let us consider an example program:

# import thejson packing
import json      
# Data to write  
dictionary ={ 
  "id": "02", 
  "name": "vijay", 
  "department": "Cr"
} 
      
# Serializing json  
json_obj = json.dumps(dictionary, indent = 2) 
print(json_obj)

Output:

“id”: “02”,
“name”: “vijay”,
 “department”: “CR”

Consider a program to convert a nested dictionary to JSON python:

# import thejson packing
import json
# data to be written
dictionary = {
 "fruit":{"guava": "1","color": "green"},
"vegetable": {"tomato": "2","color": "red"},
}
# using the json
d = json.dumps(dictionary)
print(d)

Output:

"fruit":
{"guava": "1","color": "green"},
"vegetable":
 {"tomato": "2","color": "red"}

• In the above program, a module is imported. And we consider two different variables, fruits, and vegetables, Which are considered dictionaries.
• A variable d is used. In which the json.dumps( ) function is used to store the dictionary.

Dictionary to JSON File Python

• Let us consider an example program to convert a dictionary to json file in python.

# importing json packing
import json
st = {"Name": "Kumari","Age": 16,"hobby":"reading"}
with open('student.json', 'w') as f:
json.dump(st, f)

Output:

“name”: “kumari”,
“age”: 16,
“hobby”: “reading”

• In the above program, we used a JSON module and used a student dictionary to open the file.
• The name of the file is student.json, and ‘w’ is used to write the file.
• The student.json file is stored in the dictionary the json.dump( ) module is used.

Converting Dictionary to JSON File in Python

• Let us consider an example program to convert dictionary to json file in python.

# import thejson packing
import json
class fruit(dict):
    def __str__(self):
        return json.dumps(self)
c = [[‘apple’,'banana']]
q= fruit(combo)
print(q)

Output:

 “apple”: “orange”

• In the above code, the JSON module is used.
• The method__str__(self)  is used in the representation of the string.
• Here we also declared the c and q variables where q is assigned to the class.
• The parameter c is used to obtain the output.

Dictionary to JSON Array Python

• Let us consider an example program to convert a dictionary to a JSON array in python.

# import thejson packing
import json
dic = {'lion': 3, 'tiger': 1}
arr = [ {'key': i, 'value': dic[k]} for i in dic]
print(json.dumps(arr))

Output:

{ “key”: “ lion “, “value ”: 3},
{ “key”: “ tiger “, “value”: 1}

• In the above code, the JSON module is used.
• Here the dic is a variable with assigned key-value pair.
• The arr variable is used to declare the array, which can be used to check what is key and what is value.
• The file is stored in the dictionary, the json.dump( ) module is used.
• The loop is useful for storing of the value.

Multiple Dictionaries to JSON Python

• Let us consider an example program to convert multiple dictionary to json file in python.

# import the json packing
import json
dict = {"fruit":{"mango": "1","color": "yellow"},"vegetable": {"onion": "4","white": "red"},"chocolate":{"dairy milk":"2","color":"black"}}
report = json.dumps(dict)
print(report)

Output:

{"fruit":{"mango": "1","color”: "yellow"},"vegetable": {"onion": "4","white": "red"},"chocolate":{"dairy milk":"2","color":"black"}}

• In the above code, the JSON module is used. And a variable dict is declared.
• We used json.dumps ( ) module to store the data in the dictionary.

Dictionary to JSON Using the Sort_keys in Python

• Let us consider an example program to convert a dictionary to json file using sort_keysin python.

# import thejson packing
import json
dictionary ={"Name": "rushi", "Branch": " ECE ", "CGPA": " 8.0"} 
d = json.dumps(dict, indent = 5, sort_keys = True) 
print(d)

Output:

" Branch ": " ECE ",
" CGPA ": " 8.0"
" Name ": " rushi ", 

• In the above code, the JSON module is used.
• Here the dic is a variable with assigned key-value pair.
• We used json.dumps module to store the values.
• The sort_keys is TRUE, which is used to sort the values in thedictionary. If the value is false then the values will not be sorted.