diff --git a/ibkr_report/exchangerates.py b/ibkr_report/exchangerates.py
index 8fa69d59..6e9e5f28 100644
--- a/ibkr_report/exchangerates.py
+++ b/ibkr_report/exchangerates.py
@@ -111,15 +111,14 @@ def download_official_rates(self, url: str) -> None:
 
     def get_rate(self, currency_from: str, currency_to: str, date_str: str) -> Decimal:
         """Exchange rate between two currencies on a given day."""
-        one = Decimal(1)
         if currency_from == currency_to:
-            return one
+            return Decimal(1)
 
         original_date = search_date = get_date(date_str)
         while original_date - search_date < timedelta(MAX_BACKTRACK_DAYS):
             date_rates = self.rates.get(search_date.strftime(_DATE), {})
-            from_rate = one if currency_from == "EUR" else date_rates.get(currency_from)
-            to_rate = one if currency_to == "EUR" else date_rates.get(currency_to)
+            from_rate = "1" if currency_from == "EUR" else date_rates.get(currency_from)
+            to_rate = "1" if currency_to == "EUR" else date_rates.get(currency_to)
             if from_rate is not None and to_rate is not None:
                 return Decimal(to_rate) / Decimal(from_rate)
             search_date -= timedelta(1)
diff --git a/ibkr_report/report.py b/ibkr_report/report.py
index 4de626bf..4de7a7c5 100644
--- a/ibkr_report/report.py
+++ b/ibkr_report/report.py
@@ -24,6 +24,18 @@
 class Report:
     """Total selling prices, total capital gains, and total capital losses
     calculated from the CSV files.
+
+    Args:
+        file (Iterable[bytes]): The input file in CSV format
+        report_currency (str): The currency used in the output
+        use_deemed_acquisition_cost (bool): Whether to use acquisition cost
+
+    Attributes:
+        prices (Decimal): Total selling prices
+        gains (Decimal): Total capital gains
+        losses (Decimal): Total capital losses
+        details(List): Details from trades such as dates and quantities
+        options (Dict): Whether to use acquisition cost, report currency
     """
 
     prices: Decimal = Decimal(0)