Python Project Partially Done

elevationproject.py

#initialize
import googlemaps
from datetime import datetime
import json
import csv
import os
import scriptpath
gmaps = googlemaps.Client(key='my_api_key')

os.chdir(os.path.dirname(os.path.realpath(sys.argv[0])))#redefines cwd to the script's home dir bc I'm running it in the IDE
#ask for start address, get it formatted correctly
while True:
	try:
		start=input('please enter start address')
		geocode_result = gmaps.geocode(start)
		x=json.dumps(geocode_result)
		r=json.loads(x)
		startformatted = r[0]['formatted_address']
		print(startformatted) #debugging
		break
	except IndexError:
		print('sorry, invalid address. Please try again.')

#ask for destination address, get it formatted correctly
while True:
	try:
		destination=input('please enter destination address') #ask for destination address
		geocode_result = gmaps.geocode(destination) #make the request for geocode
		y=json.dumps(geocode_result) #format into json
		s=json.loads(y) #load json object
		destinationformatted = s[0]['formatted_address'] #formatted address to variable
		print(destinationformatted)
		break
	except IndexError:
		print('sorry, invalid address. Please try again.')
#get directions
while True:
	try:
		mode=input('please enter the preferred mode of travel for route calculation.Driving, walking, transit, or bicycling.')
		directions = gmaps.directions(startformatted, destinationformatted, mode=mode)
		break
	except ValueError:
		print('sorry, invalid mode of transportation. Please try again')
print(directions) #debugging
z=json.dumps(directions)
t=json.loads(z)

polyline=t[0]['overview_polyline']['points']
print(polyline) #debugging

distance_matrix = gmaps.distance_matrix(startformatted, destinationformatted, mode=mode)
print(distance_matrix) #debugging
a=json.dumps(distance_matrix)
u=json.loads(a)

distance = u['rows'][0]['elements'][0]['distance']['value']#some funky data types going on! lists inside dictionaries and vice versa
print (distance) #distance in meters

while True:
	try:
		samples = input('at how many points would you like to sample elevation?')
		samples = int(samples)
		break
	except ValueError:
		print("That's not an int!")
		
elevations = gmaps.elevation_along_path(polyline, samples=samples)
print(elevations)
b=json.dumps(elevations)
v=json.loads(b)
print(v)


with open('elev.csv','w') as elev:
	writer = csv.writer(elev)
	writer.writerow(('Lat','Long','Elev'))
	for x in range (0, samples):
		print(v[x])
		writer.writerow((v[x]['location']['lat'],v[x]['location']['lng'],v[x]['elevation']))
	elev.close()

print(open("elev.csv").read()) #debugging
print('printed') #debugging