def read_flights(flights_source: TextIO, routes: RouteDict) -> FlightDir: """Return the flights from flights_source, including only the ones that have an entry in routes. >>> from io import StringIO >>> flight_src = StringIO(TEST_FLIGHTS_SRC) >>> actual = read_flights(flight_src, TEST_ROUTES_DICT_FOUR_CITIES) >>> actual == TEST_FLIGHTS_DIR_FOUR_CITIES True """ flights = [] src_index = FLIGHT_DATA_INDEXES["Source airport"] dst_index = FLIGHT_DATA_INDEXES["Destination airport"] # Complete this function. for line in routes_source: def read_routes (routes_source: TextI0, airports: Airport Dict) -> RouteDict:"""Return the flight routes from routes_source, including only the onesthat have an entry in airports. If there are multiple routes betweenroutes_source and a destination (on different airlines for example),include the destination only once. Routes that include null airport IDsshould still be included, but routes that have empty IATA should beexcluded.>>> from io import StringI0>>> routes_src = StringIO (TEST_ROUTES_SRC)>>> actual = read_routes (routes_src, TEST AIRPORTS_DICT)>>> actual == TEST_ROUTES_DICT_FOUR_CITIESTrue||||||routes = {}src_index = ROUTE_DATA_INDEXES ["Source airport"]dst_index = ROUTE_DATA_INDEXES ["Destination airport"]# Complete this function.# Note that each value in the resulting dictionary is a set of IATA codesfor line in routes_source:cols=line.strip().split(",")src_iata=cols [src_index].strip()dst_iata=cols [dst_index].strip()if src_iata in airports and dst_iata in airports and dst_iata not inif src_iata not in routes:routes [src_iata] = []routes [src_iata].append(dst_iata)return routes def read_routes (routes_source: TextI0, airports: Airport Dict) -> RouteDict:"""Return the flight routes from routes_source, including only the onesthat have an entry in airports. If there are multiple routes betweenroutes_source and a destination (on different airlines for example),include the destination only once. Routes that include null airport IDsshould still be included, but routes that have empty IATA should beexcluded.>>> from io import StringI0>>> routes_src = StringIO (TEST_ROUTES_SRC)>>> actual = read_routes (routes_src, TEST AIRPORTS_DICT)>>> actual == TEST_ROUTES_DICT_FOUR_CITIESTrue||||||routes = {}src_index = ROUTE_DATA_INDEXES ["Source airport"]dst_index = ROUTE_DATA_INDEXES ["Destination airport"]# Complete this function.# Note that each value in the resulting dictionary is a set of IATA codesfor line in routes_source:cols=line.strip().split(",")src_iata=cols [src_index].strip()dst_iata=cols [dst_index].strip()if src_iata in airports and dst_iata in airports and dst_iata not inif src_iata not in routes:routes [src_iata] = []routes [src_iata].append(dst_iata)return routes

The question involves writing a function named read_flights that takes two arguments:…

def read_flights(flights_source: TextIO, routes: RouteDict) -> FlightDir: """Return the flights from flights_source, including only the ones that have an entry in routes. >>> from io import StringIO >>> flight_src = StringIO(TEST_FLIGHTS_SRC) >>> actual = read_flights(flight_src, TEST_ROUTES_DICT_FOUR_CITIES) >>> actual == TEST_FLIGHTS_DIR_FOUR_CITIES True """ flights = [] src_index = FLIGHT_DATA_INDEXES["Source airport"] dst_index = FLIGHT_DATA_INDEXES["Destination airport"] # Complete this function. for line in routes_source:

def read_flights(flights_source: TextIO, routes: RouteDict) -> FlightDir: """Return the flights from flights_source, including only the ones that have an entry in routes. >>> from io import StringIO >>> flight_src = StringIO(TEST_FLIGHTS_SRC) >>> actual = read_flights(flight_src, TEST_ROUTES_DICT_FOUR_CITIES) >>> actual == TEST_FLIGHTS_DIR_FOUR_CITIES True """ flights = [] src_index = FLIGHT_DATA_INDEXES["Source airport"] dst_index = FLIGHT_DATA_INDEXES["Destination airport"] # Complete this function. for line in routes_source:

Np Ms Office 365/Excel 2016 I Ntermed

1st Edition

ISBN:9781337508841

Author:Carey

Publisher:Carey

Chapter3: Performing Calculations With Formulas And Functions

Section: Chapter Questions

Problem 3.15CP

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