nzec error in python

t,s=map(float, raw_input().split())
if s%5==0 :
    if t> s+0.5 :
        t-=s+0.5
        print('%.2f' % t)
    else :
        print ('low balance')
else :
    print ('%.2f' % t) 

remove the line:

print(‘low balance’)

it should be:

print(’%.2f’ %t)

which just returns the original value of t