Hey everyone!

I am currently on the first assignment in the second week of this course. I may be missing something but there seems to be undefined methods called in the unchangeable portion of the L1 and L2 sections: L1_test and L2_test.

```
yhat = np.array([.9, 0.2, 0.1, .4, .9])
y = np.array([1, 0, 0, 1, 1])
print("L1 = " + str(L1(yhat, y)))
L1_test(L1)
####
yhat = np.array([.9, 0.2, 0.1, .4, .9])
y = np.array([1, 0, 0, 1, 1])
print("L2 = " + str(L2(yhat, y)))
L2_test(L2)
```

Even after writing L1 and L2 successfully, this throws errors. Does anyone know what the cause of this is?