Geographic Information Systems Asked by Thomas Zuberbuehler on June 23, 2021
How do I download files through Python using URLs located in a shapefile with ArcPy?
The script needs to read a shapefile, create folders and download images using URLs in more than 1 field/record (all starting with url*
).
import os
import arcpy
import shutil
import requests
# since I have no access to INDEX_utm20_PEI_Charlottetown_2008.shp, I am using
# a test shapefile with 5 fields:
# id (int), name (string), url1 (string), url2 (string), notes (string)
shapefile = r"dataphotos.shp"
photo_location = r"dataphotos"
fields = [field.name for field in arcpy.ListFields(shapefile, "url*", "string")]
with arcpy.da.SearchCursor(shapefile, ["id", "name"] + fields) as cursor:
for row in cursor:
id = row[0] # unique
name = row[1]
destination = os.path.join(photo_location, name)
os.makedirs(destination, exist_ok=True)
for url, field_name in zip(row[2:], fields):
file_path = os.path.join(destination, f"{id}-{name}-{field_name}.jpg")
response = requests.get(url, stream=True)
if response.status_code == 200:
with open(file_path, 'wb') as file:
response.raw.decode_content = True
shutil.copyfileobj(response.raw, file)
See also:
The above example does not use arcpy.env.workspace
. I avoid using that whenever possible, especially in a a standalone script, or a complex script (using more than one path/workspace). I think this makes the script more explicit and easier to read.
Correct answer by Thomas Zuberbuehler on June 23, 2021
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