template='{l} {i} {s},{y} {n} {p}.'
l1='life'
i1='is'
s1='short'
y1='you'
n1='need'
p1='python'
l=l1
i=i1
s=s1
y=y1
n=n1
p=p1
result=template.format(l,i,s,y,n,p)
print(result)
template='{} {} {} ，{} {} {}.'
l='life'
i='is'
s='short'
y='you'
n='need'
p='python'
result=template.format(l,i,s,y,n,p)
template='{0} {1} {2},{3} {4} {5}.'
l='life'
i='is'
s='short'
y='you'
n='need'
p='python'
result=template.format(l,i,s,y,n,p){}这个格式里只能是顺序，不能是你填的lisynp之类的字母。你转两遍也没有意义