Here’s is what the template code looks like:
# Step 2: Loop over tx
for t in range(None):
# Step 2.A: select the "t"th time step vector from X.
x = None
# Step 2.B: Use reshaper to reshape x to be (1, n_values) (≈1 line)
x = None
# Step 2.C: Perform one step of the LSTM_cell
a, _, c = None
# Step 2.D: Apply densor to the hidden state output of LSTM_Cell
out = None
# Step 2.E: add the output to "outputs"
None
See the comment there about reshaper? Of course your method should also work. Are you sure you actually clicked “Shift-Enter” on the function after you changed it? If you don’t do that, it just runs the old code again. Here’s a thread which talks about how the notebooks work.