Fix warnings on startup + add more TODO

TODO

@@ -14,8 +14,8 @@ Make the various windows centre themselves
 Document all functions
 Conform to python naming conventions and code style
 Make db_layer use a helper function to handle most of the database queries
-Unify the db_layer interface w.r.t. whether book_ids should be passed as
-strings or ints or dicts.
+Unify the db_layer interface w.r.t. whether book_ids should be passed as strings or ints or dicts.
+Deal with unicode in a proper manner.
 
 
 _Bugs_
@@ -27,16 +27,19 @@ When the top element shown is highlighted in the browser window, and pgUp is pre
  - does not happen when up_arrow is pressed.
 Error checking out an already checked out book
  - SQLite integrity check failure
+Multiple failed emails print to the terminal in a way that can't be readable.
+Database has various quirks and issues, the way queries are done is absolutely wild.
 
 
 
 _Implemented Features_
 Categories work based on selection, not just highlight
 Sort by column in browser
-Support UTF-8 for everything
+*Support UTF-8 for everything*
 Search ignores Case (for lowercase search strings)
 Text entry supports longer string
 Home and End navigate to top and bottom of catalogue respectively.
 
 Support for multiple copies
  - books will have their book_id written in pencil on inside cover
+

library/interface/sendemails.py

@@ -40,13 +40,13 @@ class DaysForm(FormWindow):
 
     def _return_values(self):
         ret = self.entries[0].value
-        if ret is "":
+        if ret == "":
             return DEFAULT_DAY_VALUE
-        else:
-            #If we didn't get valid input, noisily fail
-            assert ret.isdigit() and int(ret) > 0, \
-                    "Max signed out days is not positive: " + ret.__repr__()
-            return int(ret)
+        
+        #If we didn't get valid input, noisily fail
+        assert ret.isdigit() and int(ret) > 0, \
+                "Max signed out days is not positive: " + ret.__repr__()
+        return int(ret)
 
 
 class NameForm(FormWindow):
@@ -55,11 +55,11 @@ class NameForm(FormWindow):
     labels = ["Name"]
 
     def _return_values(self):
-        if self.entries[0].value is "":
+        if self.entries[0].value == "":
             return "Librarian"
-        else:
-            assert self.entries[0].value.isprintable()
-            return self.entries[0].value
+        
+        assert self.entries[0].value.isprintable()
+        return self.entries[0].value
 
 
 #Private functions
@@ -108,7 +108,8 @@ def _send_email(quest_id: str,
 #Public functions
 @permissions.check_permissions(permissions.PERMISSION_LIBCOM)
 @catch_error_with(lambda w, hb, *args: (w, hb, None))
-def sendemails_procedure(w, hb, cy, cx, mx):
+def sendemails_procedure(w, hb, cy, cx, mx): 
+	# TODO: This bugs out when multiple emails fail to be sent.
     """Procedure to send emails to those with overdue books
 
     w:      ncurses window for the routine