Mẹo Can you JSON loads a list? 2022

Kinh Nghiệm Hướng dẫn Can you JSON loads a list? Mới Nhất

Pro đang tìm kiếm từ khóa Can you JSON loads a list? được Update vào lúc : 2022-12-24 12:10:20 . Với phương châm chia sẻ Thủ Thuật Hướng dẫn trong nội dung bài viết một cách Chi Tiết Mới Nhất. Nếu sau khi Read nội dung bài viết vẫn ko hiểu thì hoàn toàn có thể lại phản hồi ở cuối bài để Ad lý giải và hướng dẫn lại nha.

Python JSON

In this tutorial, you will learn to parse, read and write JSON in Python with the help of examples. Also, you will learn to convert JSON to dict and pretty print it.

Nội dung chính

Python JSONImport json ModuleParse JSON in PythonExample 1: Python JSONto dictExample 2: Python read JSON filePython Convert to JSON stringExample 3: Convert dict to JSONWriting JSON to a fileExample 4: Writing JSON to a filePython pretty print JSONExample 5: Python pretty print JSONTable of Contents

JSON (JavaScript Object Notation) is a popular data format used for representing structured data. It’s common to transmit and receive data between a server and web application in JSON format.

In Python, JSON exists as a string. For example:

p. = ‘”name”: “Bob”, “languages”: [“Python”, “Java”]’

It’s also common to store a JSON object in a file.

Import json Module

To work with JSON (string, or file containing JSON object), you can use Python’s json module. You need to import the module before you can use it.

import json

Parse JSON in Python

The json module makes it easy to parse JSON strings and files containing JSON object.

Example 1: Python JSONto dict

You can parse a JSON string using json.loads() method. The method returns a dictionary.

import json
person = ‘”name”: “Bob”, “languages”: [“English”, “Fench”]’
person_dict = json.loads(person)
# Output: ‘name’: ‘Bob’, ‘languages’: [‘English’, ‘Fench’]
print( person_dict)
# Output: [‘English’, ‘French’]
print(person_dict[‘languages’])

Here, person is a JSON string, and person_dict is a dictionary.

Example 2: Python read JSON file

You can use json.load() method to read a file containing JSON object.

Suppose, you have a file named person.json which contains a JSON object.

“name”: “Bob”,
“languages”: [“English”, “Fench”]

Here’s how you can parse this file:

import json
with open(‘path_to_file/person.json’) as f:
data = json.load(f)
# Output: ‘name’: ‘Bob’, ‘languages’: [‘English’, ‘Fench’]
print(data)

Here, we have used the open() function to read the json file. Then, the file is parsed using json.load() method which gives us a dictionary named data.

If you do not know how to read and write files in Python, we recommend you to check Python File I/O.

Python Convert to JSON string

You can convert a dictionary to JSON string using json.dumps() method.

Example 3: Convert dict to JSON

import json
person_dict = ‘name’: ‘Bob’,
‘age’: 12,
‘children’: None

person_json = json.dumps(person_dict)
# Output: “name”: “Bob”, “age”: 12, “children”: null
print(person_json)

Here’s a table showing Python objects and their equivalent conversion to JSON.

PythonJSON Equivalentdictobjectlist, tuplearraystrstringint, float, intnumberTruetrueFalsefalseNonenull

Writing JSON to a file

To write JSON to a file in Python, we can use json.dump() method.

Example 4: Writing JSON to a file

import json
person_dict = “name”: “Bob”,
“languages”: [“English”, “Fench”],
“married”: True,
“age”: 32

with open(‘person.txt’, ‘w’) as json_file:
json.dump(person_dict, json_file)

In the above program, we have opened a file named person.txt in writing mode using ‘w’. If the file doesn’t already exist, it will be created. Then, json.dump() transforms person_dict to a JSON string which will be saved in the person.txt file.

When you run the program, the person.txt file will be created. The file has following text inside it.

“name”: “Bob”, “languages”: [“English”, “Fench”], “married”: true, “age”: 32

Python pretty print JSON

To analyze and debug JSON data, we may need to print it in a more readable format. This can be done by passing additional parameters indent and sort_keys to json.dumps() and json.dump() method.

Example 5: Python pretty print JSON

import json
person_string = ‘”name”: “Bob”, “languages”: “English”, “numbers”: [2, 1.6, null]’
# Getting dictionary
person_dict = json.loads(person_string)
# Pretty Printing JSON string back
print(json.dumps(person_dict, indent = 4, sort_keys=True))

When you run the program, the output will be:

“languages”: “English”,
“name”: “Bob”,
“numbers”: [
2,
1.6,
null
]

In the above program, we have used 4 spaces for indentation. And, the keys are sorted in ascending order.

By the way, the default value of indent is None. And, the default value of sort_keys is False.

Recommended Readings:

Python JSON to CSV and vice-versaPython XML to JSON and vice-versaPython simplejson

Table of Contents

What is JSON?Using json ModuleParse JSON in Python
Example: JSON string to dictExample: Python read JSON file

dict to JSON string (with Example)Writing JSON to a file (with Example)Pretty print JSON (with Example)

Video Can you JSON loads a list? ?

Bạn vừa tìm hiểu thêm Post Với Một số hướng dẫn một cách rõ ràng hơn về Review Can you JSON loads a list? tiên tiến và phát triển nhất

Chia Sẻ Link Tải Can you JSON loads a list? miễn phí

Người Hùng đang tìm một số trong những Share Link Cập nhật Can you JSON loads a list? miễn phí.

Hỏi đáp vướng mắc về Can you JSON loads a list?

Nếu sau khi đọc nội dung bài viết Can you JSON loads a list? vẫn chưa hiểu thì hoàn toàn có thể lại Comments ở cuối bài để Mình lý giải và hướng dẫn lại nha
#JSON #loads #list