💵 fix(order): account for fees 💵 (#126)

* Update Exchange.py * #patch
alkalescent · Nov 16, 2021 · 7ae80a2 · 7ae80a2
1 parent ab59dce
commit 7ae80a2
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/Exchange.py b/src/Exchange.py
@@ -22,7 +22,8 @@ def __init__(self, key=None, secret=None, testnet=False):
                 self.secret = os.environ['BINANCE_SECRET']
         self.client = Client(self.key, self.secret, testnet=testnet, tld='us')
 
-    def order(self, base, quote, side, spend_ratio=1, test=False):
+    def order(self, base, quote, side, spend_ratio=0.999, test=False):
+        # fee is 0.1%, so max spend_ratio is 99.9%
         pair = f'{base}{quote}'
         side = side.upper()
         order_type = self.client.ORDER_TYPE_MARKET