shapefile renderer for pyramid

renderer.py

writer = shapefile.Writer(shapeType=shapefile.POINT)
writer.autoBalance = 1
# iterate through the entire dataset and extract the field names
headers = {}
for row in data:
    headers.update({k.replace('PID_', '').split(' ')[0]: type(v) for k, v in row.items() if v is not None})
del headers['pos']
writer.field('latitude', 'N', '32', 15)
writer.field('longitude', 'N', '32', 15)
header_map = {
    int: ('N',),
    float: ('N', 7, 3),
    str: ('C', 30),
    datetime: ('T',)
}
for h, t in headers.items():
    writer.field(h, *header_map[t])

def check_field(f, r):
    if f[0] in r:
        return r[f[0]]
    else:
        return ""
for row in data:
    row = {k.replace('PID_', '').split(' ')[0]: v for k, v in row.items()}
    if 'pos' is None:
        continue
    if 'pos' in row and row['pos'] is not None:
        row['latitude'] = row['pos']['coordinates'][1]
        row['longitude'] = row['pos']['coordinates'][0]
        del row['pos']
    writer.point(row['longitude'], row['latitude'])
    writer.record(*[check_field(f, row) for f in writer.fields])
dbfout = BytesIO()
shpout = BytesIO()
shxout = BytesIO()
writer.save(shp=shpout, dbf=dbfout, shx=shxout)