exercism: complete plane-tickets (generate + assign + codes OK)

exercises/concept/plane-tickets/generators.py

@@ -14,7 +14,9 @@ def generate_seat_letters(number):
 
     """
 
-    pass
+    seat_letters = ["A", "B", "C", "D"]
+    for i in range(number):
+        yield seat_letters[i % 4]
 
 
 def generate_seats(number):
@@ -34,7 +36,25 @@ def generate_seats(number):
 
     """
 
-    pass
+    generated_seats = []
+    seat_letters = ["A", "B", "C", "D"]
+    row = 1
+
+    while len(generated_seats) < number:
+        if row == 13:
+            row += 1
+            continue
+
+        for letter in seat_letters:
+            seat = str(row) + letter
+            generated_seats.append(seat)
+            if len(generated_seats) == number:
+                yield seat
+                break
+            else:
+                yield seat
+
+        row += 1
 
 def assign_seats(passengers):
     """Assign seats to passengers.
@@ -46,7 +66,14 @@ def assign_seats(passengers):
 
     """
 
-    pass
+    n = len(passengers)
+    passengers_seats = {}
+    seats = list(generate_seats(n))
+
+    for index in range(len(passengers)):
+        passengers_seats[passengers[index]] = seats[index]
+
+    return passengers_seats
 
 def generate_codes(seat_numbers, flight_id):
     """Generate codes for a ticket.
@@ -57,4 +84,11 @@ def generate_codes(seat_numbers, flight_id):
 
     """
 
-    pass
+    for seat_number in seat_numbers:
+        _code = seat_number + flight_id
+        remaining_len_to_complete = 12 - len(_code)
+
+        for n in range(remaining_len_to_complete):
+            _code += "0"
+
+        yield _code