for python 2.7

can you explain the program

what does '%-20s-10s' do

as well as what does the last print statment do

i am confusd on the %

print( '%-20s%-10s' % ('Fahrenheit', "Celsius')) for f in range(0, 101, 10): c=5*(f-32) / 9 + 32 print('%-20.2f%-10.2s' % (f, c))