primeiro commit com exercicios de Exercism realizados até esta data

python/plane-tickets/generators.py

@@ -0,0 +1,72 @@
+"""Functions to automate Conda airlines ticketing system."""
+
+
+def generate_seat_letters(number):
+    """Generate a series of letters for airline seats.
+
+    :param number: int - total number of seat letters to be generated.
+    :return: generator - generator that yields seat letters.
+
+    Seat letters are generated from A to D.
+    After D it should start again with A.
+
+    Example: A, B, C, D
+
+    """
+    seat_letters: list = ["A", "B", "C", "D"]
+    for seat_number in range(number):
+        yield seat_letters[seat_number % len(seat_letters)]
+
+
+def generate_seats(number):
+    """Generate a series of identifiers for airline seats.
+
+    :param number: int - total number of seats to be generated.
+    :return: generator - generator that yields seat numbers.
+
+    A seat number consists of the row number and the seat letter.
+
+    There is no row 13.
+    Each row has 4 seats.
+
+    Seats should be sorted from low to high.
+
+    Example: 3C, 3D, 4A, 4B
+
+    """
+    seat_letters = generate_seat_letters(number)
+    row_number = 1
+    for seat_number in range(number):
+        if not seat_number % 4 and seat_number > 0:
+            row_number += 1
+        if row_number == 13:
+            row_number += 1
+        yield f"{row_number}{next(seat_letters)}"
+
+
+def assign_seats(passengers):
+    """Assign seats to passengers.
+
+    :param passengers: list[str] - a list of strings containing names of passengers.
+    :return: dict - with the names of the passengers as keys and seat numbers as values.
+
+    Example output: {"Adele": "1A", "Björk": "1B"}
+
+    """
+    seats = generate_seats(len(passengers))
+    assign_seats_dict: dict = {}
+    for passenger in passengers:
+        assign_seats_dict[passenger] = next(seats)
+    return assign_seats_dict
+
+
+def generate_codes(seat_numbers, flight_id):
+    """Generate codes for a ticket.
+
+    :param seat_numbers: list[str] - list of seat numbers.
+    :param flight_id: str - string containing the flight identifier.
+    :return: generator - generator that yields 12 character long ticket codes.
+
+    """
+    for seat in seat_numbers:
+        yield f"{seat}{flight_id}".ljust(12, "0")