lt;R call 5&gt;: autograph(stopifnot(x &gt; 0))] </span>
<span class="co"># [&lt;R call 6&gt;: stop_if_negative4(x)] </span>
<span class="co"># [&lt;R call 7&gt;: py_resolve_dots(list(...))] </span>
<span class="co"># [&lt;R call 8&gt;: sess$run(stop_if_negative4(x))] </span>
<span class="co"># [&lt;R call 9&gt;: eval(expr, envir, enclos)] </span>
<span class="co"># [&lt;R call 10&gt;: eval(expr, envir, enclos)] </span>
<span class="co"># [&lt;R call 11&gt;: withVisible(eval(expr, envir, enclos))] </span>
<