python-core-50，第20课发现错误

[Nathan]

def calc(*args, **kwargs):
result = 0
for arg in args:
result += arg
for value in kwargs.values():
result += value
### return total

最后应该是return result

[Nathan]

函数使用进阶，高阶函数，发现代码位置错误
import operator

print(calc(init_value=0, op=operator.add, 1, 2, 3, x=4, y=5)) # 15
print(calc(init_value=1, op=operator.mul, 1, 2, x=3, y=4, z=5)) # 120

位置参数应该写在关键字参数前面，正确代码为：
print(calc(1, 2, 3, init_value=0, op=operator.add, x=4, y=5))
或者
print(calc(1, 2, x=3, y=4, z=5, init_value=1, op=operator.mul))

[ajian]

i also find out this mistake,please change it