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% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/python.R
\name{py_len}
\alias{py_len}
\title{Length of Python object}
\usage{
py_len(x, default = NULL)
}
\arguments{
\item{x}{A Python object.}
\item{default}{The default length value to return, in the case that
the associated Python object has no \verb{__len__} method. When \code{NULL}
(the default), an error is emitted instead.}
}
\value{
The length of the object, as a numeric value.
}
\description{
Get the length of a Python object. This is equivalent to calling
the Python builtin \code{len()} function on the object.
}
\details{
Not all Python objects have a defined length. For objects without a defined
length, calling \code{py_len()} will throw an error. If you'd like to instead
infer a default length in such cases, you can set the \code{default} argument
to e.g. \code{1L}, to treat Python objects without a \verb{__len__} method as having
length one.
}
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