Update class_strompreis.py

initial clean up, translations, os.makedirs improved

modules/class_strompreis.py

@@ -1,64 +1,61 @@
 import json
-from datetime import datetime, timedelta, timezone
+import os
+import hashlib
+import requests
+from datetime import datetime, timedelta
 import numpy as np
-import json, os
-from datetime import datetime
-import hashlib, requests
 import pytz
 
-# Beispiel: Umwandlung eines UTC-Zeitstempels in lokale Zeit
+# Example: Converting a UTC timestamp to local time
 utc_time = datetime.strptime('2024-03-28T01:00:00.000Z', '%Y-%m-%dT%H:%M:%S.%fZ')
 utc_time = utc_time.replace(tzinfo=pytz.utc)
 
-# Ersetzen Sie 'Europe/Berlin' mit Ihrer eigenen Zeitzone
+# Replace 'Europe/Berlin' with your own timezone
 local_time = utc_time.astimezone(pytz.timezone('Europe/Berlin'))
 print(local_time)
 
 def repeat_to_shape(array, target_shape):
-    # Prüfen , ob das Array in die Zielgröße passt
+    # Check if the array fits the target shape
     if len(target_shape) != array.ndim:
         raise ValueError("Array and target shape must have the same number of dimensions")
 
-    # die Anzahl der Wiederholungen pro Dimension
+    # Number of repetitions per dimension
     repeats = tuple(target_shape[i] // array.shape[i] for i in range(array.ndim))
 
-    #  np.tile, um das Array zu erweitern
+    # Use np.tile to expand the array
     expanded_array = np.tile(array, repeats)
     return expanded_array
 
-
-
 class HourlyElectricityPriceForecast:
-    def __init__(self, source, cache_dir='cache', abgaben=0.000228, prediction_hours=24): #228
+    def __init__(self, source, cache_dir='cache', charges=0.000228, prediction_hours=24):  # 228
         self.cache_dir = cache_dir
-        if not os.path.exists(self.cache_dir):
-            os.makedirs(self.cache_dir)
+        os.makedirs(self.cache_dir, exist_ok=True)
         self.cache_time_file = os.path.join(self.cache_dir, 'cache_timestamp.txt')
         self.prices = self.load_data(source)
-        self.abgaben = abgaben
+        self.charges = charges
         self.prediction_hours = prediction_hours
     
     def load_data(self, source):
         cache_filename = self.get_cache_filename(source)
         if source.startswith('http'):
             if os.path.exists(cache_filename) and not self.is_cache_expired():
-                print("Lade Daten aus dem Cache...")
+                print("Loading data from cache...")
                 with open(cache_filename, 'r') as file:
-                    data = json.load(file)
+                    json_data = json.load(file)
             else:
-                print("Lade Daten von der URL...")
+                print("Loading data from the URL...")
                 response = requests.get(source)
                 if response.status_code == 200:
-                    data = response.json()
+                    json_data = response.json()
                     with open(cache_filename, 'w') as file:
-                        json.dump(data, file)
+                        json.dump(json_data, file)
                     self.update_cache_timestamp()
                 else:
-                    raise Exception(f"Fehler beim Abrufen der Daten: {response.status_code}")
+                    raise Exception(f"Error fetching data: {response.status_code}")
         else:
             with open(source, 'r') as file:
-                data = json.load(file)
-        return data['values']
+                json_data = json.load(file)
+        return json_data['values']
     
     def get_cache_filename(self, url):
         hash_object = hashlib.sha256(url.encode())
@@ -77,52 +74,55 @@ class HourlyElectricityPriceForecast:
         with open(self.cache_time_file, 'w') as file:
             file.write(datetime.now().strftime('%Y-%m-%d %H:%M:%S'))
 
-
-    
     def get_price_for_date(self, date_str):
-        """Gibt alle Preise für das spezifizierte Datum zurück."""
-        #date_prices = [entry["marketpriceEurocentPerKWh"]+self.abgaben for entry in self.prices if date_str in entry['end']]
-        """Gibt alle Preise für das spezifizierte Datum zurück, inklusive des Preises von 0:00 des vorherigen Tages."""
-        # Datumskonversion von String zu datetime-Objekt
+        """Returns all prices for the specified date, including the price from 00:00 of the previous day."""
+        # Convert date string to datetime object
         date_obj = datetime.strptime(date_str, '%Y-%m-%d')
         
-        # Berechnung des Vortages
+        # Calculate the previous day
         previous_day = date_obj - timedelta(days=1)
         previous_day_str = previous_day.strftime('%Y-%m-%d')
         
-        # Extrahieren des Preises von 0:00 des vorherigen Tages
-        last_price_of_previous_day = [entry["marketpriceEurocentPerKWh"]+self.abgaben for entry in self.prices if previous_day_str in entry['end']][-1]
+        # Extract the price from 00:00 of the previous day
+        last_price_of_previous_day = [
+            entry["marketpriceEurocentPerKWh"] + self.charges
+            for entry in self.prices if previous_day_str in entry['end']
+        ][-1]
         
-        # Extrahieren aller Preise für das spezifizierte Datum
-        date_prices = [entry["marketpriceEurocentPerKWh"]+self.abgaben for entry in self.prices if date_str in entry['end']]
-        print("getPRice:",len(date_prices))
+        # Extract all prices for the specified date
+        date_prices = [
+            entry["marketpriceEurocentPerKWh"] + self.charges
+            for entry in self.prices if date_str in entry['end']
+        ]
+        print(f"getPrice: {len(date_prices)}")
         
-        # Hinzufügen des letzten Preises des vorherigen Tages am Anfang der Liste
+        # Add the last price of the previous day at the start of the list
         if len(date_prices) == 23:
-                date_prices.insert(0, last_price_of_previous_day)
+            date_prices.insert(0, last_price_of_previous_day)
 
-        return np.array(date_prices)/(1000.0*100.0) + self.abgaben
+        return np.array(date_prices) / (1000.0 * 100.0) + self.charges
     
     def get_price_for_daterange(self, start_date_str, end_date_str):
+        """Returns all prices between the start and end dates."""
         print(start_date_str)
         print(end_date_str)
-        """Gibt alle Preise zwischen dem Start- und Enddatum zurück."""
         start_date_utc = datetime.strptime(start_date_str, "%Y-%m-%d").replace(tzinfo=pytz.utc)
         end_date_utc = datetime.strptime(end_date_str, "%Y-%m-%d").replace(tzinfo=pytz.utc)
         start_date = start_date_utc.astimezone(pytz.timezone('Europe/Berlin'))
         end_date = end_date_utc.astimezone(pytz.timezone('Europe/Berlin'))
 
-        
         price_list = []
 
         while start_date < end_date:
             date_str = start_date.strftime("%Y-%m-%d")
             daily_prices = self.get_price_for_date(date_str)
             
-            if daily_prices.size ==24:
+            if daily_prices.size == 24:
                 price_list.extend(daily_prices)
             start_date += timedelta(days=1)
         
-        if self.prediction_hours>0:
-            price_list = repeat_to_shape(np.array(price_list),(self.prediction_hours,))        
+        # If prediction hours are greater than 0, reshape the price list
+        if self.prediction_hours > 0:
+            price_list = repeat_to_shape(np.array(price_list), (self.prediction_hours,))
+        
         return price_list