Holidays (3 points)

A travel agency saves the booked trips in a file. There is a header line with the name of the travel and then a line for each customer. Each of these lines has the following data separated by a hyphen (-): the customer name (str), the room type (str) that can be 'double' or 'single', the number of hotel nights (int) and a variable number of names (str) for extra excursions booked by this customer. There is also a dictionary (dict) for extra excursions in which the key is the name of the excursion (str) and the value is its price (int).

Write function holidays() that takes the name of an input file (str) and a dictionary of extra excursions prices as those described, it also takes the hotel price for a night (int) and a name of an output file (str). This function must create an (output) file with the given name that will have a line for each customer with the name of the customer (str), a colon and a space (': ') and the total amount that this customer must pay (int) followed by the euro symbol ('€'). The total amount for a customer includes the price for the hotel nights and the extra excursions booked by them and it must be the integer part of the computed result. The cost of a single room is a 20% more expensive than the double one.

Save this function in file holidays.py.

Example:

For a data file with the name 'greece.txt' with the following content:

Greece
J. Smith-double-9-Santorini-Mykonos-Rhodes
A. Jones-single-8-Athens-Mykonos-Rhodes-Mycenae
B. Garcia-double-12-Santorini-Athens-Mykonos-Rhodes-Ephesus-Mycenae
J. Clark-single-9-Athens-Rhodes-Ephesus-Mycenae-Thessaloniki

and executing the following statements:

>>> dextra_gr = {'Santorini': 90, 'Athens': 100, 'Mykonos': 85, 'Mycenae': 110,
...            'Rhodes': 120, 'Ephesus': 115, 'Thessaloniki': 75}
>>> holidays('greece.txt', dextra_gr, 106, 'gr_bills.txt')

an output file with name 'gr_bills.txt' will be created with the following content:

J. Smith: 1249€
A. Jones: 1432€
B. Garcia: 1892€
J. Clark: 1664€

Note

Tests for automatic debugging are provided in file test-holidays.txt.