#! /usr/bin/env nix-shell
#! nix-shell -i python3 -p "python3.withPackages(ps: with ps; [pandas scipy requests (python3Packages.callPackage ./openrouteservice-py.nix {})])"

import sys
import os
import pandas as pd
import requests
from time import sleep
from scipy.spatial import Delaunay
from threading import Lock
import pickle
from pathlib import Path
import openrouteservice
import json

(May-14-2020, 11:45 AM)Winfried Wrote: 1. What do the first lines do?
2. Can I get rid of them to run the script on Windows?

(May-14-2020, 11:45 AM)Winfried Wrote: 3. How do I check which packages I need to run it? Trial and error until it runs?

# 3-party libraries
import pandas as pd
import requests
from scipy.spatial import Delaunay
import openrouteservice

# Standard library(comes with python)
from pathlib import Path
from time import sleep
from threading import Lock
import pickle
import json
import sys
import os

# Make
E:\div_code
λ python -m venv test_env

# Cd in 
E:\div_code
λ cd test_env\

# Activate
E:\div_code\test_env
λ E:\div_code\test_env\Scripts\activate

# Install
(test_env) E:\div_code\test_env
λ pip install requests pandas scipy openrouteservice
Collecting requests .....
Successfully installed certifi-2020.4.5.1 chardet-3.0.4 idna-2.9 numpy-1.18.4 openrouteservice-2.3.0
pandas-1.0.3 python-dateutil-2.8.1 pytz-2020.1 requests-2.23.0 scipy-1.4.1 six-1.14.0 urllib3-1.25.9  

# Test that it work
(test_env) E:\div_code\test_env
λ python
Python 3.7.3 (v3.7.3:ef4ec6ed12, Mar 25 2019, 21:26:53) [MSC v.1916 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import pandas as pd
>>>
>>> import requests
>>>
>>> from scipy.spatial import Delaunay
>>>
>>> import openrouteservice
>>>
>>> exit()