ADd optional to class _fiat_convert

freqtrade/rpc/rpc.py

@@ -6,7 +6,7 @@ from abc import abstractmethod
 from datetime import timedelta, datetime, date
 from decimal import Decimal
 from enum import Enum
-from typing import Dict, Any, List
+from typing import Dict, Any, List, Optional
 
 import arrow
 import sqlalchemy as sql
@@ -51,7 +51,7 @@ class RPC(object):
     RPC class can be used to have extra feature, like bot data, and access to DB data
     """
     # Initialize _fiat_converter if needed in each RPC handler
-    _fiat_converter: CryptoToFiatConverter = None
+    _fiat_converter: Optional[CryptoToFiatConverter] = None
 
     def __init__(self, freqtrade) -> None:
         """
@@ -146,7 +146,6 @@ class RPC(object):
         if not (isinstance(timescale, int) and timescale > 0):
             raise RPCException('timescale must be an integer greater than 0')
 
-        fiat = self._fiat_converter
         for day in range(0, timescale):
             profitday = today - timedelta(days=day)
             trades = Trade.query \
@@ -169,7 +168,7 @@ class RPC(object):
                     symbol=stake_currency
                 ),
                 '{value:.3f} {symbol}'.format(
-                    value=fiat.convert_amount(
+                    value=self._fiat_converter.convert_amount(
                         value['amount'],
                         stake_currency,
                         fiat_display_currency

freqtrade/rpc/telegram.py

@@ -116,8 +116,11 @@ class Telegram(RPC):
         """ Send a message to telegram channel """
 
         if msg['type'] == RPCMessageType.BUY_NOTIFICATION:
+            if self._fiat_converter:
                 msg['stake_amount_fiat'] = self._fiat_converter.convert_amount(
                     msg['stake_amount'], msg['stake_currency'], msg['fiat_currency'])
+            else:
+                msg['stake_amount_fiat'] = 0
 
             message = "*{exchange}:* Buying [{pair}]({market_url})\n" \
                       "with limit `{limit:.8f}\n" \
@@ -138,8 +141,8 @@ class Telegram(RPC):
 
             # Check if all sell properties are available.
             # This might not be the case if the message origin is triggered by /forcesell
-            if all(prop in msg for prop in ['gain', 'profit_fiat',
-                                            'fiat_currency', 'stake_currency']):
+            if (all(prop in msg for prop in ['gain', 'fiat_currency', 'stake_currency'])
+               and self._fiat_converter):
                 msg['profit_fiat'] = self._fiat_converter.convert_amount(
                     msg['profit_amount'], msg['stake_currency'], msg['fiat_currency'])
                 message += '` ({gain}: {profit_amount:.8f} {stake_currency}`' \