`UndefVarError: y not defined` for iteration in Python back to Julia

[femtomc]

I keep running into this UndefVarError issue when passing iterators from Julia back over to Python.

I think generally this most frequently occurs during list comprehensions.

ERROR: LoadError: Python: Julia: UndefVarError: y not defined
Stacktrace:
  [1] errset
    @ ~/.julia/packages/PythonCall/B5irB/src/err.jl:28 [inlined]
  [2] pyjliter_next(self::PythonCall.Iterator)
    @ PythonCall ~/.julia/packages/PythonCall/B5irB/src/jlwrap/iter.jl:19
  [3] _pyjl_callmethod(f::Any, self_::Ptr{PythonCall.C.PyObject}, args_::Ptr{PythonCall.C.PyObject}, nargs::Int64)
    @ PythonCall ~/.julia/packages/PythonCall/B5irB/src/jlwrap/base.jl:58
  [4] _pyjl_callmethod(o::Ptr{PythonCall.C.PyObject}, args::Ptr{PythonCall.C.PyObject})
    @ PythonCall.C ~/.julia/packages/PythonCall/B5irB/src/cpython/jlwrap.jl:47
  [5] PyObject_CallObject
    @ ~/.julia/packages/PythonCall/B5irB/src/cpython/pointers.jl:290 [inlined]
  [6] macro expansion
    @ ~/.julia/packages/PythonCall/B5irB/src/Py.jl:129 [inlined]
  [7] pycallargs

[cjdoris]

You're on an old version of PythonCall, you should update.