pyplot.py:514: RuntimeWarning: More than 20 figures have been opened.

[peterjpxie]

Error:

Epoch 89999     Loss: 0.245816 Average L1 error: 0.491549 Accuracy: 0.530000
Epoch 99999     Loss: 0.245776 Average L1 error: 0.491502 Accuracy: 0.526667
C:\Program Files\Python37\lib\site-packages\matplotlib\pyplot.py:514: RuntimeWarning: More than 20 figures have been opened. Figures created through the pyplot
interface (`matplotlib.pyplot.figure`) are retained until explicitly closed and may consume too much memory. (To control this warning, see the rcParam `figure.m
ax_open_warning`).
  max_open_warning, RuntimeWarning)
Epoch 109999    Loss: 0.245730 Average L1 error: 0.491455 Accuracy: 0.533333
Epoch 119999    Loss: 0.245671 Average L1 error: 0.491410 Accuracy: 0.536667

Reason:
Duplicate plt.figure() in utils.py - plot_function().

Origin code:

def plot_function(losses, save_filepath=None, ylabel=None, title=None):
    plt.figure()
    t = [x[0] for x in losses]
    loss = [x[1] for x in losses]

    plt.figure()
    plt.plot(t, loss, 'b')

Working code:

def plot_function(losses, save_filepath=None, ylabel=None, title=None):
    # plt.figure()
    t = [x[0] for x in losses]
    loss = [x[1] for x in losses]

    plt.figure()
    plt.plot(t, loss, 'b')