Write a program named lastname_firstname_cities. py that works with information about large cities. Your program will open the cities. txt downloadfile. Each line in the file has the name of a city, its country, and its population. The first few lines of the file look like this:

Answer and Explanation:

Open your text editor and open new file. Save new file file as lastname_firstname_cities.py. The program will open the file cities.txt downloadfile hence :

dfile= open(cities.txt, "r")

If we write this into our lastname_firstname_cities.py file it will open our cities.txt downloadfile in read mode and text mode(by default unless we specify binary mode which is for images)

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