Dumping JSON Output to File

Q

How to dump (or encode, serialize) a Python object into file or an output stream as a JSON string using json.dump()?

✍: FYIcenter.com

A

json.dump(o,fp,...) function performs the same job as json.dumps(o,...) except that it directs the JSON string to the output stream of a given file pointer.

Here is a Python example that generates a pretty formatted JSON string with property keys sorted:

>>> import json
>>> import sys
>>> l = ['foo', {'bar': ('baz', None, 1.0, {"c": 0, "b": 0, "a": 0})}]
>>> json.dump(l, sys.stdout, indent=3, sort_keys=True)
[
   "foo",
   {
      "bar": [
         "baz",
         null,
         1.0,
         {
            "a": 0,
            "b": 0,
            "c": 0
         }
      ]
   }
]>>>

⇒ What Is json.JSONEncoder Class

⇐ Generating JSON Strings in Pretty Format

⇑ 'json' Module - JSON Encoder and Decoder

⇑⇑ Python Tutorials

2018-10-08, ∼2246🔥, 0💬

json.dumps() - Dumping Object into JSON
How to dump (or encode, serialize) a Python object into a JSON string using json.dumps()? The json.dumps() function allows you to dump (or encode, serialize) Python objects into JSON strings: json.dumps(obj, *, skipkeys=False, ensure_ascii=True, check_circular=True, allow_nan=True, cls=None, indent=... 2018-10-13, ∼4427🔥, 0💬

json.loads() - Loading JSON into Object
How to load (or decode, deserialize) a JSON string into a Python object using json.loads()? The json.loads() function allows you to load (or decode, deserialize) JSON strings (str, bytes or bytearray types) into Pythong objects: json.loads(s, *, encoding=None, cls=None, object_hook=None, parse_float... 2018-10-08, ∼3901🔥, 0💬

json.tool - JSON Pretty-Print Tool
What is json.tool? Can I use it to convert a JSON string a pretty-print format? json.tool is a special internal executable module - a module with main() so you can run it as Python script. When you run json.tool, (or json.module.main()), it will read a JSON string from the stand input and write the ... 2018-09-24, ∼3403🔥, 0💬

What Is json.JSONEncoder Class
What Is json.JSONEncoder Class? json.JSONEncoder class is the underlying class that supports json.dumps() functions. The following Python example shows you how to use json.JSONEncoder class to perform the same JSON encoding job as json.dumps function: >>> import json >&am... 2018-10-08, ∼3107🔥, 0💬

re.split() - Splits with Regular Expression
How to split a given string with a regular expression as the delimiter using re.split()? The re.split() function allows you to split a given target string using matches of a given regular expression as the delimiter. import re l = re.split(pattern, string, maxsplit=0, flags=0) Where: pattern is the ... 2018-10-13, ∼2642🔥, 0💬

Dumping JSON Output to File
How to dump (or encode, serialize) a Python object into file or an output stream as a JSON string using json.dump()? json.dump(o,fp,...) function performs the same job as json.dumps(o,...) except that it directs the JSON string to the output stream of a given file pointer. Here is a Python example t... 2018-10-08, ∼2247🔥, 0💬

'urllib' Module - Internet Communication
Where to find tutorials on Python "urllib" Module? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on Python "urllib" Module. What Is Python Module 'urllib' Sending an HTTP Request with 'urllib.request' http.client.HTTPResponse Objects HTTP POST w... 2018-09-24, ∼2203🔥, 0💬

Generating JSON Strings in Pretty Format
How to generate JSON strings in pretty format using json.dumps()? You can control the JSON output string format with "indent", "separators" and "sort_keys" arguments of the json.dumps() function: Here is a Python example that generates a pretty formatted JSON string with property keys sorted: &g... 2018-10-08, ∼2164🔥, 0💬

'json' Module - JSON Encoder and Decoder
Where to find tutorials on Python "json" Module? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on Python "json" Module. What Is Python Module 'json' json.dumps() - Dumping Object into JSON Generating JSON Strings in Pretty Format Dumping JSON Ou... 2018-10-13, ∼2163🔥, 0💬

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