py_len: Length of Python object
In rstudio/reticulate: Interface to 'Python'

py_len

R Documentation

Length of Python object

Description

Get the length of a Python object. This is equivalent to calling the Python builtin len() function on the object.

Usage

py_len(x, default = NULL)

Arguments

`x`	A Python object.
`default`	The default length value to return, in the case that the associated Python object has no `⁠__len__⁠` method. When `NULL` (the default), an error is emitted instead.

Details

Not all Python objects have a defined length. For objects without a defined length, calling py_len() will throw an error. If you'd like to instead infer a default length in such cases, you can set the default argument to e.g. 1L, to treat Python objects without a ⁠__len__⁠ method as having length one.