Functions Without Return in Python
Functions often return data, but sometimes their purpose is simply to display information. Consider countries_dict
, a dictionary structured as {country: (area, population)}
. A function can take two argumentsβd
(a dictionary) and name
(a key in d
)βand display the information in a readable format instead of returning it.
1234567891011121314# Data countries_dict = {'USA': (9629091, 331002651), 'Canada': (9984670, 37742154), 'Germany': (357114, 83783942), 'Brazil': (8515767, 212559417), 'India': (3166391, 1380004385)} # Defining a function def country_information(dict, name): print('Country:', name) print('Area:', dict[name][0], 'sq km') print('Population:', round(dict[name][1]/1000000, 2), 'MM') # Testing the function country_information(countries_dict, 'Brazil') country_information(countries_dict, 'Germany')
In country_information(dict, name)
, the parameter dict
receives countries_dict
when called. Inside the function, dict[name][0]
gives the area, and dict[name][1]
gives the population.
These parameters are local variables, meaning they exist only within the function. When calling the function, countries_dict
is passed as dict
, and the country name as name
.
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Functions Without Return in Python
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Functions often return data, but sometimes their purpose is simply to display information. Consider countries_dict
, a dictionary structured as {country: (area, population)}
. A function can take two argumentsβd
(a dictionary) and name
(a key in d
)βand display the information in a readable format instead of returning it.
1234567891011121314# Data countries_dict = {'USA': (9629091, 331002651), 'Canada': (9984670, 37742154), 'Germany': (357114, 83783942), 'Brazil': (8515767, 212559417), 'India': (3166391, 1380004385)} # Defining a function def country_information(dict, name): print('Country:', name) print('Area:', dict[name][0], 'sq km') print('Population:', round(dict[name][1]/1000000, 2), 'MM') # Testing the function country_information(countries_dict, 'Brazil') country_information(countries_dict, 'Germany')
In country_information(dict, name)
, the parameter dict
receives countries_dict
when called. Inside the function, dict[name][0]
gives the area, and dict[name][1]
gives the population.
These parameters are local variables, meaning they exist only within the function. When calling the function, countries_dict
is passed as dict
, and the country name as name
.
Thanks for your feedback!