Functionalize exit sequence

ib-clearance.py

@@ -147,6 +147,20 @@ def parse_time_string(timestring):
     return structtime
 
 
+def exit_sequence():
+    """Initiate exit sequence.
+
+    Asks user to enter character, and exits program if X is pressed.
+    """
+    print("\nPress X to exit.")
+    key = getch()
+    if isinstance(key, bytes):
+        # msvcrt.getch returns type bytes, decode into str.
+        key = key.decode()
+    if key.upper() == "X":
+        exit()
+
+
 def main():
     print("ib-clearance")
     print("============")
@@ -166,13 +180,7 @@ def main():
         else:
             print("\nStudent still has lessons, clearance not granted.")
 
-        print("\nPress X key to exit, other key to run again.")
-        key = getch()
-        if isinstance(key, bytes):
-            # msvcrt.getch returns type bytes, decode into str.
-            key = key.decode()
-        if key.upper() == "X":
-            break
+        exit_sequence()
 
 
 if __name__ == "__main__":