Always parse the same number of arguments; empty string != None

message.py

@@ -62,7 +62,7 @@ class Message:
   def parse_content(self):
       """Parse or reparse the message content"""
       # Remove !
-      if self.text[0] == '!':
+      if len(self.text) > 1 and self.text[0] == '!':
           self.qual = "cmd"
           self.text = self.text[1:].strip()
 

server/IRC.py

@@ -271,11 +271,11 @@ class IRCMessage:
         self.cmd = self.decode(p.group("command"))
 
         # Parse params
-        if p.group("params"):
+        if p.group("params") is not None:
             for param in p.group("params").strip().split(b' '):
                 self.params.append(param)
 
-        if p.group("trailing"):
+        if p.group("trailing") is not None:
             self.params.append(p.group("trailing"))