The attached file "airfares.txt$"$ contains the records of airfares posted by an airline for flights

between Canadian cities. Each record is placed on a separate line, and consists of comma

separated fields containing $($from left to right$)$ the date$/$time of the flight, the origin city, the

destination city, and the airfare. Given the file "airfares.txt$",$ write a program called

airfares$\_$analysis.py to find and display for each Canadian city the highest fare of departing

flights and corresponding destinations. Cities of departing flights must be listed in alphabetic

order as illustrated by the expected output of the program for the provided file, given below:Charlottetown : $$486\mathrm{.}85[\text{'}$Regina$\text{'}]$

Edmonton : $$500\mathrm{.}24[\text{'}$Quebec City'$]$

Fredericton : $$499\mathrm{.}21[\text{'}$Vancouver$\text{'}]$

Halifax : $$485\mathrm{.}32[\text{'}$Ottawa$\text{'},$ 'Whitehorse'$]$

Iqaluit : $$498\mathrm{.}57[\text{'}$Edmonton$\text{'}]$

London : $$457\mathrm{.}29[\text{'}$Edmonton$\text{'}]$

Montreal : $$499\mathrm{.}63[\text{'}$Yellowknife$\text{'}]$

Ottawa : $$493\mathrm{.}13[\text{'}$Victoria$\text{'}]$

Quebec City : $$499\mathrm{.}21[\text{'}$Ottawa$\text{'},$ 'Winnipeg'$]$

Regina : $$469\mathrm{.}3[\text{'}$Windsor$\text{'}]$

St John's : $$495\mathrm{.}38[\text{'}$Quebec City'$]$

Toronto : $$497\mathrm{.}1[\text{'}$Edmonton$\text{'}]$

Vancouver : $$494\mathrm{.}87[\text{'}$Montreal$\text{'}]$

Victoria : $$494\mathrm{.}88[\text{'}$Vancouver$\text{'}]$

Whitehorse : $$496\mathrm{.}88[\text{'}$Calgary$\text{'}]$

Windsor : $$486\mathrm{.}19[\text{'}$Halifax$\text{'}]$

Winnipeg : $$498\mathrm{.}28[\text{'}$Yellowknife$\text{'}]$

Yellowknife : $$494\mathrm{.}67[\text{'}$Charlottetown$\text{'}]$ Please use dictionaries and Tuples in the solution.