Typeerror: Len() of unsized Object how to resolve

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def invert_map(x):
    y = _np.empty_like(x)
    y[x] = _np.arange(len(x))
    return y

Result gives this in this function :

File "E: Anaconda3 lib site-Packages arlpy comms.py", line 74, in invert_map y[x] = _np.arange(Len(x))

Typeerror: Len() of unsized Object

What is your cause? How to solve it?

python-3.x
  • 1

    What the x being passed on to him to shoot that mistake?

  • The function len makes use of the method __len__ therefore x needs to be the type that has the implementation of this method, otherwise this error will be released.

1 answer

0

Probably "x" is not a string.

Try to convert it, like this:

len(str(TestV))
  • 2

    And it should be a string?

  • @Andersoncarloswoss Well thought out, I went straight into the most common usage haha! But the "Len" serves for lists too.

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