Issue on page /edge_detector.html

[AlexBoro]

In Colab and Binder, in section 1.1, running this cell:

for e in f.parts(4):
print(e)
break

Gives this error:

AttributeError Traceback (most recent call last)
Cell In[6], line 1
----> 1 for e in f.parts(4):
2 print(e)
3 break

AttributeError: 'FileInput' object has no attribute 'parts'

In section 1.1, running this cell:

frames = f.frames(1000)

Gives this error:

AttributeError Traceback (most recent call last)
Cell In[7], line 1
----> 1 frames = f.frames(1000)

AttributeError: 'FileInput' object has no attribute 'frames'