To write a dictionary to a file in Python, you can serialize the data to json using json.dump() or json.dumps() method or serialize it to a string by converting it into a string using str(), then writing it using write().

Method 1: Using json.dump()

The json.dump() is a built-in function that directly writes a dictionary as a JSON object to a file. After you write it, you can open the file and read it easily or manipulate it as needed.

import json

shares = {'Name': "Netweb Tech", 'Price': 4051}

# writing dictionary to a file as JSON
with open('data.json', 'w') as f:
    json.dump(shares, f)
    print("Data has been written to data.json file")

# Output: Data has been written to data.json file

In your current working directory, you will find a new file called “data.json” with the above content.

Method 2: Using json.dumps()

The json.dumps() method does not write a dictionary to a file; instead, it converts the dictionary to a JSON string. You then need to write that JSON string to a file using the write() method. It allows us to add options like formatting and indentation.

import json

shares = {'Name': "Netweb Tech", 'Price': 4051, 'Volume': 1000, "Exchange": "NSE"}

with open('data.json', 'w') as file:
    file.write(json.dumps(shares, indent=4))

Method 3: Using str()

Another simple method is to use the str() method to save a dictionary as a string, then write to a file using the write() method.

shares = {'Name': "Netweb Tech", 'Price': 4051,
          'Volume': 1000, "Exchange": "NSE"}

with open('data.txt', 'w') as file:
    file.write(str(shares))

That’s all!