Convert multiline (regular) GeoJSON to line-delimited

convert.py

import sys
import datetime
import time
from pathlib import Path

try:
    import ijson
except ModuleNotFoundError:
    print("Module isjon not found. Run: `pip install ijson`")
    raise
try:
    import jsonlines
except ModuleNotFoundError:
    print("Module jsonlines not found. Run: `pip install jsonlines`")
    raise


def curent_timestamp() -> str:
    return datetime.datetime.now().isoformat(sep=" ")


if __name__ == '__main__':
    if len(sys.argv) != 3:
        print("Number of parameters unexpected. You should run the script like: "
              "python convert.py input/path.geojson output/path.geonsonl")
        exit(1)
    input_path_object = Path(sys.argv[1]).absolute().resolve()
    input_path = input_path_object.as_posix()
    if not input_path_object.exists():
        raise FileNotFoundError(f"{sys.argv[1]} (resolved to: {input_path}) - not found.")
    output_path = Path(sys.argv[2]).absolute().as_posix()
    print(f"{input_path=}")  # = suffix shows variable name
    print(f"{output_path=}")
    num_rows = 0
    num_rows_missing_geometry = 0
    print(f"{ijson.backend=}")
    with open(input_path) as f, jsonlines.open(output_path, mode="w") as writer:
        print(f"{curent_timestamp()} - starting processing...")
        time_start = time.perf_counter()
        for idx, feature in enumerate(ijson.items(f, "features.item", use_float=True)):
            if feature.get("geometry"):
                writer.write(feature)
            else:
                num_rows_missing_geometry += 1
            num_rows = idx + 1
            if num_rows % 100000 == 0:
                print(f"{curent_timestamp()} - rows processed so far: {num_rows:_.0f}")
    time_end = time.perf_counter()
    duration = datetime.timedelta(seconds=time_end-time_start)
    print(f"{curent_timestamp()} - processing finished. Total rows written to new file: {num_rows:_.0f}. "
          f"Time: {duration}. Number of dropped rows due to lack of geometry: {num_rows_missing_geometry:_.0f}.")

sample.geojson

sample.geojsonl

{"type": "Feature", "properties": {"TRIP_ID": 1373017604620000351, "CALL_TYPE": "C", "ORIGIN_CALL": "", "ORIGIN_STAND": "", "TAXI_ID": 20000351, "TIMESTAMP": "java.util.GregorianCalendar[time=1373017604,areFieldsSet=true,areAllFieldsSet=true,lenient=true,zone=java.util.SimpleTimeZone[id=UTC,offset=0,dstSavings=3600000,useDaylight=false,startYear=0,startMode=0,startMonth=0,startDay=0,startDayOfWeek=0,startTime=0,startTimeMode=0,endMode=0,endMonth=0,endDay=0,endDayOfWeek=0,endTime=0,endTimeMode=0],firstDayOfWeek=1,minimalDaysInFirstWeek=1,ERA=1,YEAR=1970,MONTH=0,WEEK_OF_YEAR=3,WEEK_OF_MONTH=3,DAY_OF_MONTH=16,DAY_OF_YEAR=16,DAY_OF_WEEK=6,DAY_OF_WEEK_IN_MONTH=3,AM_PM=1,HOUR=9,HOUR_OF_DAY=21,MINUTE=23,SECOND=37,MILLISECOND=604,ZONE_OFFSET=0,DST_OFFSET=0]", "DAY_TYPE": "A", "MISSING_DATA": false}, "geometry": {"type": "MultiPoint", "coordinates": [[-8.669088, 41.235228], [-8.669142, 41.236434], [-8.668863, 41.238369], [-8.667819, 41.236128], [-8.666748, 41.232897], [-8.668368, 41.228892], [-8.671149, 41.226687], [-8.675262, 41.228415], [-8.679879, 41.230557], [-8.685954, 41.232042], [-8.692443, 41.232438], [-8.695629, 41.234238], [-8.695836, 41.238441], [-8.694333, 41.243013], [-8.695107, 41.247549], [-8.69733, 41.250672], [-8.700489, 41.254596], [-8.701713, 41.259483], [-8.701533, 41.264667], [-8.7021, 41.270004], [-8.700444, 41.275503], [-8.698941, 41.280867], [-8.701434, 41.285718], [-8.704773, 41.290461], [-8.706357, 41.295483], [-8.702523, 41.299884], [-8.697591, 41.303547], [-8.697393, 41.308434], [-8.700894, 41.313186], [-8.704386, 41.31792], [-8.7075, 41.322843], [-8.708661, 41.328252], [-8.711145, 41.333598], [-8.712432, 41.339115], [-8.712666, 41.34357], [-8.712027, 41.346648], [-8.712117, 41.350698], [-8.713062, 41.356035], [-8.717904, 41.360796], [-8.722737, 41.365404], [-8.724357, 41.370957], [-8.726283, 41.37552], [-8.728281, 41.379147], [-8.731143, 41.382252], [-8.734932, 41.385114], [-8.738847, 41.388111], [-8.742213, 41.391369], [-8.745471, 41.394717], [-8.748999, 41.398785], [-8.753706, 41.403366], [-8.759556, 41.407353], [-8.76033, 41.412627], [-8.756415, 41.417658], [-8.751537, 41.422401], [-8.746488, 41.427072], [-8.743644, 41.432373], [-8.739972, 41.437773], [-8.736813, 41.443344], [-8.733213, 41.448672], [-8.732241, 41.454324], [-8.735634, 41.459778], [-8.738577, 41.465142], [-8.738874, 41.470263], [-8.740845, 41.475843], [-8.743635, 41.481432], [-8.744616, 41.487075], [-8.746083, 41.492439], [-8.749395, 41.49738], [-8.752446, 41.502537], [-8.753364, 41.508477], [-8.754066, 41.51412], [-8.752401, 41.519637], [-8.750619, 41.525217], [-8.751852, 41.530581], [-8.753373, 41.534919], [-8.754858, 41.539158], [-8.757, 41.543856], [-8.757747, 41.548914], [-8.757459, 41.553432], [-8.757135, 41.557446], [-8.759295, 41.561028], [-8.763336, 41.56452], [-8.76681, 41.568867], [-8.765334, 41.573727], [-8.76321, 41.578416], [-8.764074, 41.583366], [-8.766657, 41.588208], [-8.769645, 41.593113], [-8.772669, 41.597856], [-8.775693, 41.60277], [-8.775288, 41.608269], [-8.772255, 41.612067], [-8.768619, 41.616387], [-8.763831, 41.620086], [-8.761446, 41.624586], [-8.760528, 41.629491], [-8.761491, 41.634126], [-8.763714, 41.63877], [-8.766819, 41.64309], [-8.769609, 41.647545], [-8.771346, 41.652279], [-8.773632, 41.656896], [-8.776854, 41.660928], [-8.777979, 41.665275], [-8.774937, 41.669307], [-8.771211, 41.673006], [-8.771562, 41.677461], [-8.774352, 41.682051], [-8.777448, 41.686227], [-8.781552, 41.689764], [-8.785359, 41.693004], [-8.789166, 41.696244], [-8.792946, 41.699475], [-8.796222, 41.702301], [-8.797311, 41.704848], [-8.798706, 41.706027], [-8.801073, 41.704776], [-8.801379, 41.706711], [-8.802909, 41.706882], [-8.803449, 41.707449]]}}
{"type": "Feature", "properties": {"TRIP_ID": 1375450445620000195, "CALL_TYPE": "C", "ORIGIN_CALL": "", "ORIGIN_STAND": "", "TAXI_ID": 20000195, "TIMESTAMP": "java.util.GregorianCalendar[time=1375450445,areFieldsSet=true,areAllFieldsSet=true,lenient=true,zone=java.util.SimpleTimeZone[id=UTC,offset=0,dstSavings=3600000,useDaylight=false,startYear=0,startMode=0,startMonth=0,startDay=0,startDayOfWeek=0,startTime=0,startTimeMode=0,endMode=0,endMonth=0,endDay=0,endDayOfWeek=0,endTime=0,endTimeMode=0],firstDayOfWeek=1,minimalDaysInFirstWeek=1,ERA=1,YEAR=1970,MONTH=0,WEEK_OF_YEAR=3,WEEK_OF_MONTH=3,DAY_OF_MONTH=16,DAY_OF_YEAR=16,DAY_OF_WEEK=6,DAY_OF_WEEK_IN_MONTH=3,AM_PM=1,HOUR=10,HOUR_OF_DAY=22,MINUTE=4,SECOND=10,MILLISECOND=445,ZONE_OFFSET=0,DST_OFFSET=0]", "DAY_TYPE": "A", "MISSING_DATA": false}, "geometry": {"type": "MultiPoint", "coordinates": [[-8.628732, 41.169834], [-8.628732, 41.169843], [-8.628732, 41.169834], [-8.628381, 41.169771], [-8.626923, 41.169924], [-8.62569, 41.169411], [-8.624565, 41.169312], [-8.623782, 41.169213], [-8.623791, 41.169069], [-8.623125, 41.169141], [-8.621946, 41.169663], [-8.619561, 41.171166], [-8.616519, 41.171778], [-8.614818, 41.171823], [-8.613504, 41.17185], [-8.613207, 41.171895], [-8.612856, 41.17158], [-8.612874, 41.171238], [-8.611524, 41.17104], [-8.608725, 41.169492], [-8.607375, 41.169258], [-8.606799, 41.168475], [-8.606628, 41.168025], [-8.606628, 41.166576], [-8.607582, 41.166351], [-8.607573, 41.165712]]}}