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i am interested in the double pendulum problem from Mathplotlib Gallery at matplotlib.org/stable/gallery/animation/double_pendulum.html#sphx-glr-gallery-animation-double-pendulum-py

After pasting the source code into the Jupyter notebook, this error occurred:

TypeError Traceback (most recent call last)

<ipython-input-1-fcbcf0dba74b> in <module> 72 time_template = 'time = %.1fs' 73 time_text = ax.text(RealNumber('0.05'), RealNumber('0.9'), '', transform=ax.transAxes) ---> 74 history_x, history_y = deque(maxlen=history_len), deque(maxlen=history_len) 75 76

TypeError: an integer is required

Does anyone know how to fix this?

i am interested in the double pendulum problem from Mathplotlib Gallery at matplotlib.org/stable/gallery/animation/double_pendulum.html#sphx-glr-gallery-animation-double-pendulum-py

After pasting the source code into the Jupyter notebook, this error occurred:

TypeError Traceback (most recent call last)

<ipython-input-1-fcbcf0dba74b> in <module> 72 time_template = 'time = %.1fs' 73 time_text = ax.text(RealNumber('0.05'), RealNumber('0.9'), '', transform=ax.transAxes) ---> 74 history_x, history_y = deque(maxlen=history_len), deque(maxlen=history_len) 75 76

TypeError: an integer is required

Does anyone know how to fix this?

i I am interested in the double pendulum problem from Mathplotlib Gallery at matplotlib.org/stable/gallery/animation/double_pendulum.html#sphx-glr-gallery-animation-double-pendulum-pythe matplotlib gallery.

After pasting the source code into the Jupyter notebook, this error occurred:

Does anyone know how to fix this?