Instead of fixing ijson backend, allow library to determine.

import sys

import argparse

import ijson.backends.yajl2_cffi as ijson

# Backends tried IN ORDER on import: https://pypi.org/project/ijson/#id3

# Selected backend set in ijson.backend as string.

import ijson

import sqlalchemy as sqla

import sqlalchemy.orm as sqla_orm

import sqlalchemy.orm.session

if __name__ == "__main__":  # pragma: no cover

    # Tell user when not using most efficient backend.

    if ijson.backend != 'yajl2_c':

        print("Failed to set backend to yajl2_c. Please check that yajl is installed. Parsing may slow down.")

        print(f"Selected: {ijson.backend}")

    main()

import pprint

import sys

import ijson.backends.yajl2_cffi as ijson

import ijson

def parser():