A simple example for how to export data from the Enelogic API (WSSE)

enelogic.py

# From: https://enelogic.docs.apiary.io/#introduction/option-1.-wsse-authentication

# Go to the developer center: enelogic.com/nl/developers.
# Add your app and choose a desired redirect url (only for OAuth2 purposes, if using WSSE just fill in a URL e.g. enelogic.com)
# Fill in values below

import hashlib
import json
import os
import requests
import random
import string
from datetime import datetime, timedelta

appid = "..."
appsecret = "..."
username = "...@..."
apikey = "..."

def wsse(username, password):
    nonce = ''.join(random.choice(string.letters + string.digits) for _ in range(16))
    created = datetime.utcnow().strftime("%Y-%m-%dT%H:%M:%SZ")

    hash = hashlib.sha1(nonce + created + password).digest().encode('base64').strip()
    
    return 'UsernameToken Username="%s", PasswordDigest="%s", Nonce="%s", Created="%s"' % (
        username, hash, nonce.encode('base64').strip(), created)

def enelogic_wsse(appid, username, appsecret, apikey):
    username = appid + "." + username
    password = appsecret + "." + apikey
    
    return wsse(username, password)

s = requests.Session()
s.headers.update({'Content-Type': 'application/json'})    

# Get buildings

# Note: you have to regenerate the WSSE every request...
s.headers.update({'X-WSSE': enelogic_wsse(appid, username, appsecret, apikey)})    

res = s.get("https://enelogic.com/api/buildings/")
res.raise_for_status()

buildings = {r['id']: r for r in res.json()}
#[
#  {
#    "id": 1505,
#    "label": "Standaard",
#    "address": "Nijverheidsweg",
#    "addressNo": 25,
#    "addressAdd": "A",
#    "zipCode": "4529PP",
#    "location": "Eede",
#    "region": "Zeeland",
#    "country": "NL",
#    "timezone": "Europe/Amsterdam",
#    "main": true
#  }
#]

# Get measuringpoints
s.headers.update({'X-WSSE': enelogic_wsse(appid, username, appsecret, apikey)})    

res = s.get("https://enelogic.com/api/measuringpoints/")
res.raise_for_status()

measurepoints = {r['id']: r for r in res.json()}
#  {
#    "id": 1651,
#    "buildingId": 1505,
#    "mdId": 1,
#    "label": "Netbeheerder",
#    "dayMin": "2013-03-14 00:00:00",
#    "dayMax": "2014-02-27 23:45:00",
#    "monthMin": "2013-02-15 00:00:00",
#    "monthMax": "2014-02-27 00:00:00",
#    "yearMin": "2013-02-01 00:00:00",
#    "yearMax": "2014-02-27 00:00:00",
#    "timezone": "Europe/Amsterdam"
#  },
  
for measurepoint in measurepoints:
    curr = datetime.strptime(measurepoints[measurepoint]['dayMin'][:10], "%Y-%m-%d")
    end = datetime.strptime(measurepoints[measurepoint]['dayMax'][:10], "%Y-%m-%d")
    
    while curr < end:
        fname = "enelogic/" + str(measurepoint) + "." + curr.strftime("%Y-%m-%d") + '.json'
        next = curr + timedelta(days=1)

        if os.path.exists(fname):
            curr = next
            continue
        
        print fname
        s.headers.update({'X-WSSE': enelogic_wsse(appid, username, appsecret, apikey)})    
        res = s.get("https://enelogic.com/api/measuringpoints/%s/datapoints/%s/%s" % (measurepoint, curr.strftime("%Y-%m-%d"), next.strftime("%Y-%m-%d")))
        res.raise_for_status()
        
        with open(fname, "w") as f:
            f.write(res.content)
        
        curr = next

I've created a repository with the scripts I've developed including the above fix:
https://github.com/roossienb/enelogic-reader