Python_Language

Python TutorialGetting Started with PythonPython Basic SyntaxPython DatatypesPython IndentationPython Collection TypesPython Basic Input and OutputPython Built in Modules and FunctionsPython FunctionsChemPy - python packageCreating Python packagesFunctional Programming in PythonIncompatibilities moving from Python 2 to Python 3IoT Programming with Python and Raspberry PIKivy - Cross-platform Python Framework for NUI DevelopmentMutable vs Immutable (and Hashable) in PythonPyInstaller - Distributing Python CodePython *args and **kwargsPython 2to3 toolPython Abstract Base Classes (abc)Python Abstract syntax treePython Alternatives to switch statement from other languagesPython and ExcelPython Anti-PatternsPython ArcPyPython ArraysPython Asyncio ModulePython Attribute AccessPython AudioPython Binary DataPython Bitwise OperatorsPython Boolean OperatorsPython Checking Path Existence and PermissionsPython ClassesPython CLI subcommands with precise help outputPython Code blocks, execution frames, and namespacesPython Collections modulePython Comments and DocumentationPython Common PitfallsPython Commonwealth ExceptionsPython ComparisonsPython Complex mathPython concurrencyPython ConditionalsPython configparserPython Context Managers (with Statement)Python Copying dataPython CountingPython ctypesPython Data SerializationPython Data TypesPython Database AccessPython Date and TimePython Date FormattingPython DebuggingPython DecoratorsPython Defining functions with list argumentsPython DeploymentPython Deque ModulePython DescriptorPython Design PatternsPython DictionaryPython Difference between Module and PackagePython DistributionPython DjangoPython Dynamic code execution with `exec` and `eval`Python EnumPython ExceptionsPython ExponentiationPython Files & Folders I/OPython FilterPython FlaskPython Functools ModulePython Garbage CollectionPython GeneratorsPython getting start with GZipPython graph-toolPython groupby()Python hashlibPython HeapqPython Hidden FeaturesPython HTML ParsingPython HTTP ServerPython IdiomsPython ijsonPython Immutable datatypes(int, float, str, tuple and frozensets)Python Importing modulesPython Indexing and SlicingPython Input, Subset and Output External Data Files using PandasPython Introduction to RabbitMQ using AMQPStorm



Python ijson

From WikiOD

ijson is a great library for working with JSON files in Python. Unfortunately, by default it uses a pure Python JSON parser as its backend. Much higher performance can be achieved by using a C backend.

Simple Example[edit | edit source]

Sample Example Taken from one benchmarking

import ijson

def load_json(filename):
    with open(filename, 'r') as fd:
        parser = ijson.parse(fd)
        ret = {'builders': {}}
        for prefix, event, value in parser:
            if (prefix, event) == ('builders', 'map_key'):
                buildername = value
                ret['builders'][buildername] = {}
            elif prefix.endswith('.shortname'):
                ret['builders'][buildername]['shortname'] = value

        return ret

if __name__ == "__main__":
    load_json('allthethings.json')

JSON FILE LINK

Credit:Stack_Overflow_Documentation