R: Length of Python object

py_len {reticulate} | 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.

### Value

The length of the object, as a numeric value.

[Package reticulate version 1.25 Index]