less spam + minor improvements

Chatbot.py

@@ -29,7 +29,7 @@ class Chatbot(object):
 			if message.author.bot: 
 				return #ignore your own messages, Stroop
 			
-			if message.content.strip()[0] != '!': #don't respond to a command
+			if message.content.strip() == "" or message.content.strip()[0] != '!': #don't respond to a command
 				if message.content.lower() == "nihao":
 					yield from message.channel.send("kankerlauw")
 					return
@@ -40,9 +40,9 @@ class Chatbot(object):
 					pass
 				else:
 					a = random.randint(0,999)
-					if message.channel.id == 137218228953939968 and a < 80:  #shitpost channel
+					if message.channel.id == 137218228953939968 and a < 40:  #shitpost channel
 						yield from self.respondToMessage(message)
-					elif a < 20:                                             #all other channels
+					elif a < 10:                                             #all other channels
 						yield from self.respondToMessage(message)
 
 			#process commands:
@@ -105,7 +105,7 @@ class Chatbot(object):
 		return newPairDict, newTrairDict;
 	
 	#Learn to respond to messages
-	#Returns ???
+	#Returns a new dict with response pairs
 	def learnResponse(self, wordDictResp, message1: str, message2: str):
 		STOP_WORDS = ["aan", "achter", "al", "ben", "dan", "dat", "de", "die", "dit", "een", "en", "er", "gehad", "had", "heb", 
 			"hen", "het", "hun", "in", "is", "kon", "met", "na", "of", "om", "ook", "op", "tot", "van", "was", "wat", "zo", 
@@ -250,6 +250,7 @@ class Chatbot(object):
 
 		#Go through the chain:
 		for i in range(1, MAX_N_WORDS):
+			
 			if chain[-1] == self.END_OF_MESSAGE:
 				break
 			
@@ -261,7 +262,10 @@ class Chatbot(object):
 				if userWord in responsePairDict:
 					for goodResponseWord in responsePairDict[userWord]:
 						if goodResponseWord in pairPossibilities.keys():
-							pairPossibilities[goodResponseWord] += responsePairDict[userWord][goodResponseWord] * 0.1
+							if i == 1:
+								pairPossibilities[goodResponseWord] += responsePairDict[userWord][goodResponseWord] * 2 #first word? try to respond
+							else:
+								pairPossibilities[goodResponseWord] += responsePairDict[userWord][goodResponseWord] * 0.1
 			#Increase score for trairs:
 			if i > 1: #we can only compare trairs if we have at least two words already
 				if chain[-2] in wordTrairDict: