past

>>> def sinTay(a):...     for i in range(15):...         if   i==0:...             pass...         elif i==1:...             p=a...         else:...             p*=a...         if   i==1:...             r=a...         elif i%4==1:...             r+=p*(1.0/factorial(i))...         elif i%4==3:...             r-=p*(1.0/factorial(i))...     return r... >>> print sin(0)0.0>>> print sinTay(0.)Traceback (most recent call last):  File "<stdin>", line 1, in <module>  File "<stdin>", line 15, in sinTayUnboundLocalError: local variable 'r' referenced before assignment