[svn] Renaming troggle.expo to troggle.core. To do this, used:

perl -p -i -e "s/expo(?=[\s\.']+)/core/g" `find -name \*.py`

and then manually checked each change (had to remove a couple)

core/randSent.py

@@ -0,0 +1,32 @@
+import troggle.settings as settings
+from django import forms
+from troggle.core.models import LogbookEntry
+import random
+import re
+
+def weighted_choice(lst):
+	n = random.uniform(0,1)
+	for item, weight in lst:
+		if n < weight:
+			break
+		n = n - weight
+	return item
+
+def randomLogbookSentence():
+    randSent={}
+
+    # needs to handle empty logbooks without crashing
+
+    #Choose a random logbook entry
+    randSent['entry']=LogbookEntry.objects.order_by('?')[0]
+
+    #Choose again if there are no sentances (this happens if it is a placeholder entry)
+    while len(re.findall('[A-Z].*?\.',randSent['entry'].text))==0:
+        randSent['entry']=LogbookEntry.objects.order_by('?')[0]
+    
+    #Choose a random sentence from that entry. Store the sentence as randSent['sentence'], and the number of that sentence in the entry as randSent['number']
+    sentenceList=re.findall('[A-Z].*?\.',randSent['entry'].text)
+    randSent['number']=random.randrange(0,len(sentenceList))
+    randSent['sentence']=sentenceList[randSent['number']]
+           
+    return randSent