Add some docstrings

handler/transactions.py

@@ -106,6 +106,10 @@ class Transactions(object):
         self.irc.client.msg(self.irc.client.channel, f"All checks passed, would release funds for {stored_trade['id']}")
 
     def new_trade(self, trade_id, buyer, currency, amount, amount_xmr):
+        """
+        Called when we have a new trade in Agora.
+        Store details in Redis, generate a reference and optionally let the customer know the reference.
+        """
         reference = "".join(choices(ascii_uppercase, k=5))
         reference = f"XMR-{reference}"
         existing_ref = r.get(f"trade.{trade_id}.reference")
@@ -148,6 +152,11 @@ class Transactions(object):
         return False
 
     def get_refs(self):
+        """
+        Get all reference IDs for trades.
+        :return: list of trade IDs
+        :rtype: list
+        """
         references = []
         ref_keys = r.keys("trade.*.reference")
         for key in ref_keys:
@@ -155,12 +164,20 @@ class Transactions(object):
         return convert(references)
 
     def get_ref(self, reference):
+        """
+        Get a reference ID for a single trade.
+        :return: trade ID
+        :rtype: string
+        """
         ref_data = convert(r.hgetall(f"trade.{reference}"))
         if not ref_data:
             return False
         return ref_data
 
     def del_ref(self, reference):
+        """
+        Delete a given reference from the Redis database.
+        """
         r.delete(f"trade.{reference}")
         r.delete(f"trade.{reference}.reference")