un-hardcoded a datetime-formatted string

config.py

@@ -95,7 +95,8 @@ class ProfitConfig:
     # Delimiter used in all text- and csv-files throughout PROFIT
     DELIMITER = ";"
 
-    # Date-format used throughout PROFIT
+    # Date-format used throughout PROFIT. Make sure to retain the formatting (e.g., %d., %m., %Y) and only change the
+    # order of these substrings if desired (e.g., in the US, the format "%m.%d.%Y" might be more common).
     FORMAT_DATE = "%d.%m.%Y"
 
     # The length of tabs as measured in spaces. In interactive mode, PROFIT tries to keep the formatting of the

profit_src/parsing.py

@@ -111,8 +111,7 @@ class ParsingConfig:
 
     # Strings for asset transactions-headers:
     # These are used for accounts and investments:
-    # This dateformat should be the same as the one specified in config.py # Todo un-hardcode this.
-    STRING_DATE = "Date(DD.MM.YYYY)"
+    STRING_DATE = None # This one will be set up in the constructor, as it is format-specific.
     STRING_ACTION = "Action"
     STRING_AMOUNT = "Amount"
     STRING_BALANCE = "Balance"
@@ -150,6 +149,20 @@ class ParsingConfig:
     COLUMN_WIDTHS_INVESTMENTS = [20, 12, 12, 12, 12, 12, 12, 1]  # date, action, quantity, price, cost, payout,
     # balance, notes
 
+    def __init__(self, profit_config):
+        """Constructor, to set up some profit-config-specific topics"""
+
+        # Convert the datetime-format-string from PROFIT to the appropriate name for the "Date" Column in the
+        # CSV files:
+        date_format = profit_config.FORMAT_DATE
+        format_mappings = {'%d': 'DD', '%m': 'MM', '%Y': 'YYYY'}
+        for key, value in format_mappings.items():
+            if key not in date_format:
+                raise RuntimeError(f"Specifier '{key}' not found in the date format string of config.py.")
+            date_format = date_format.replace(key, value)
+        self.STRING_DATE = f"Date({date_format})" # (this will take precedent over the None-defined class attribute)
+
+
 
 class AccountFile:
     """Creates the structure/template for an account-file.

profit_src/profit.py

@@ -118,7 +118,7 @@ def main(config):
     storage = MarketDataMain(storage_path, config.FORMAT_DATE, analyzer)
 
     # Initialize the file parser config:
-    parsing_config = parsing.ParsingConfig()
+    parsing_config = parsing.ParsingConfig(config)
 
     # Sanity checks:
     if len(config.ASSET_GROUPNAMES) != len(config.ASSET_GROUPS):