一
template?=?'Life?is?short,you?need?{}'
python?=?'Python'
result?=?template.format(python)
print(result)
二
template?=?'life?is?short,you?need?{a}'
result?=?template.format(a='Python')
print(result)

法一

template?=?python?=?result?=?template.format(python)
(result)

法二

template?=?result?=?template.format(=)
(result)