fetch_forecast: load_dotenv only in the if main block

src/fetch_forecast.py

@@ -18,10 +18,8 @@ class FetchForecast:
         # args
         self.ticker = ticker
         # constants
-        self.past_horizon = 20  # number of past business days
-        # 
-        # load the env variables fom .env file
-        dotenv.load_dotenv(dotenv.find_dotenv())
+        self.past_horizon = 5  # number of past business days
+        # build the api-url based on env variables
         self.api_env = os.environ.get("FORECAST_API_ENV")
         api_url_temp = os.environ.get("API_URL_TEMPLATE")
         self.api_url = api_url_temp.replace("ENV", self.api_env)
@@ -52,6 +50,8 @@ class FetchForecast:
     
 
 if __name__ == "__main__":
+    # load the env variables fom .env file
+    dotenv.load_dotenv(dotenv.find_dotenv())
     past_df, fcst_df = FetchForecast("AAPL").run()
     print("Last available price:\n", past_df.tail(1))
     print("Forecasts:\n", fcst_df.head())