Python threading causing issues with google api - python-3.x

Question

I'm running through a list of locations and trying to find places along my route. This is my first attempt at threading, so any tips would be appreciated! When i run this it'll work fine for the first few iterations, but then i start getting a KeyError and the API response says route is not found (even though it should be). If I search along a shorter route, everything runs fine. When I extend the route past a couple of hours of drive time I start getting these errors. Is it possible that I'm overloading it or does my code look off?
import pandas as pd
from threading import Thread
import threading
import requests
start_input = input("start: ")
end_input = input("end: ")
out_way = input("out of the way: ")
out_way_secs = int(out_way) * 60
thread_local = threading.local()
def get_session():
if not getattr(thread_local, "session", None):
thread_local.session = requests.Session()
return thread_local.session
def get_routes(url, start, end, waypoint, idx):
session = get_session()
with session.get(url, params={'origins': f'{start}|{waypoint}', 'destinations': f'{start}|{end}',
'key': '# key'}) as response:
route = response.json()
if route['rows'][1]['elements'][0]['status'] != 'OK':
results[idx] = {'# info'}
else:
nonstop_route = route['rows'][0]['elements'][1]['duration']['value']
leg1 = route['rows'][1]['elements'][0]['duration']['value']
leg2 = route['rows'][1]['elements'][1]['duration']['value']
time_added = (leg1 + leg2) - nonstop_route
time_added_mins = str(datetime.timedelta(seconds=(leg1 + leg2) - nonstop_route))
more_time = time_added_mins.split(':')
added_time_str = str(f'{more_time[0]}:{more_time[1]}:{more_time[2]} away!')
if time_added < allowable_time:
results[idx] = {# info to return}
return results[idx]
if __name__ == "__main__":
start_time = time.time()
output_df = pd.DataFrame(columns=['Location', 'Added Time', 'Notes'])
threads = [None] * coords[0]
results = [None] * coords[0]
for i in range(len(threads)):
threads[i] = Thread(target=get_routes, args=('https://maps.googleapis.com/maps/api/distancematrix/json',
start_input, end_input, stops[i], i))
threads[i].start()
for i in range(len(threads)):
threads[i].join()
for x in range(len(results)):
output_df = output_df.append(results[x], ignore_index=True)
output_df = output_df.sort_values(['Added Time'], ascending=True)
output_df.to_csv('output.csv', index=False)
there are 3 errors that it will get, this first one pops up by itself and the last 2 will come together. The code is the same when I run it, so not sure why i'm getting different errors.
This is the most common error that comes by itself (the routing duration works fine when run individually):
Exception in thread Thread-171:
Traceback (most recent call last):
File "C:\Python37-32\lib\threading.py", line 917, in _bootstrap_inner
self.run()
File "C:\Python37-32\lib\threading.py", line 865, in run
self._target(*self._args, **self._kwargs)
File "C:program.py", line 46, in get_routes
nonstop_route = route['rows'][0]['elements'][1]['duration']['value']
KeyError: 'duration'
The two below I get together and are less common:
Exception in thread Thread-436:
Traceback (most recent call last):
File "C:\Python37-32\lib\threading.py", line 917, in _bootstrap_inner
self.run()
File "C:\Python37-32\lib\threading.py", line 865, in run
self._target(*self._args, **self._kwargs)
File "C:/program.py", line 40, in get_routes
route = response.json()
File "C:\requests\models.py", line 897, in json
return complexjson.loads(self.text, **kwargs)
File "C:\Python37-32\lib\json\__init__.py", line 348, in loads
return _default_decoder.decode(s)
File "C:\Python37-32\lib\json\decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "C:\Python37-32\lib\json\decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
second error:
Exception in thread Thread-196:
Traceback (most recent call last):
File "C:\site-packages\urllib3\response.py", line 360, in _error_catcher
yield
File "C:\urllib3\response.py", line 442, in read
data = self._fp.read(amt)
File "C:\Python37-32\lib\http\client.py", line 447, in read
n = self.readinto(b)
File "C:\Python37-32\lib\http\client.py", line 491, in readinto
n = self.fp.readinto(b)
File "C:\Python37-32\lib\socket.py", line 589, in readinto
return self._sock.recv_into(b)
File "C:\Python37-32\lib\ssl.py", line 1052, in recv_into
return self.read(nbytes, buffer)
File "C:\Python37-32\lib\ssl.py", line 911, in read
return self._sslobj.read(len, buffer)
ConnectionAbortedError: [WinError 10053] An established connection was aborted by the software in your host machine
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\site-packages\requests\models.py", line 750, in generate
for chunk in self.raw.stream(chunk_size, decode_content=True):
File "C:\site-packages\urllib3\response.py", line 494, in stream
data = self.read(amt=amt, decode_content=decode_content)
File "C:\site-packages\urllib3\response.py", line 459, in read
raise IncompleteRead(self._fp_bytes_read, self.length_remaining)
File "C:\Python37-32\lib\contextlib.py", line 130, in __exit__
self.gen.throw(type, value, traceback)
File "C:\site-packages\urllib3\response.py", line 378, in _error_catcher
raise ProtocolError('Connection broken: %r' % e, e)
urllib3.exceptions.ProtocolError: ("Connection broken: ConnectionAbortedError(10053, 'An established connection was aborted by the software in your host machine', None, 10053, None)", ConnectionAbortedError(10053, 'An established connection was aborted by the software in your host machine', None, 10053, None))