Read geospatial file with Fiona and write CSV file with EWKB geometries using Shapely

createCSVwithEWKB.py

import csv
import logging

import fiona
from shapely import geos, wkb
from shapely.geometry import shape

output_file = file_name + ".processing.csv"

with fiona.open(file_name, "r") as source:
    # Write the CSV file row by row
    with open(output_file, "w") as file:
        writer = csv.writer(file, delimiter=",", lineterminator="\n")
        firstRow = True
        for f in source:
            try:
                if firstRow:
                    writer.writerow(
                        ['geom'] + 
                        list(f["properties"].keys())
                    )
                    firstRow = False
                writer.writerow(
                    [wkb.dumps(shape(f["geometry"]), hex=True)] + 
                    list(f["properties"].values())
                )
            except Exception:
                logging.exception("Error processing feature %s:", f["id"])
                break