Minor fixes and add TODO.md

TODO.md

@@ -0,0 +1,11 @@
+To-Do List
+==========
+
+## v0.2
+- [ ] Error handling
+- [ ] Make database contain data for all classes
+- [ ] Flexible mandatory subjects
+
+## v1.0
+- [ ] make main() purely functional
+- [ ] timetable editor

ib-clearance.py

@@ -98,27 +98,24 @@ def main():
     print("============")
     db = input(
         "Please enter name of database (in same folder as program): ")
+    conn = connect_database(db)
 
     y = "y"
     while y == "y":
-        conn = connect_database(db)
-        day = get_lower_weekday()
         id = int(input("Please input the student ID number: "))
 
         if check_id(conn, id):
+            day = get_lower_weekday()
             raw_time = select_final_time(conn, day, id)
-            final_time = parse_time_string(
-                raw_time) if raw_time != None else None
-
-            if final_time != None:
+            # if raw_time is None, student has no lessons today
+            if raw_time != None:
+                final_time = parse_time_string(raw_time)
                 current_time = parse_time_string(time.strftime("%H:%M"))
-
                 if current_time > final_time:
                     print("Clear to leave.")
                 else:
                     print("Student does not have clearance.")
-
-            elif final_time == None:
+            elif raw_time == None:
                 print("Clear to leave.")
         else:
             print("Student does not exist in the database. Please try again.")