Formatting

• Basic format

#old
print(('%s %s') %('one','two'))
#new
print('{} {}'.format('one','two'))

#old
print(('%d %d') %(1,2))
#new
print('{} {}'.format(1,2))

#re-arranging the order
print('{1} {0}'.format('one','two'))

#escape braces
print('My name is {0} - {{}}'.format('Yifan'))