Fix ReactantPythonCallExt.jl (EnzymeAD#419)

* Fix ReactantPythonCallExt.jl

* Apply suggestions from code review

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

---------

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

ext/ReactantPythonCallExt.jl

@@ -8,6 +8,24 @@ using PythonCall
 
 const jaxptr = Ref{Py}()
 
+const NUMPY_SIMPLE_TYPES = (
+    ("bool_", Bool),
+    ("int8", Int8),
+    ("int16", Int16),
+    ("int32", Int32),
+    ("int64", Int64),
+    ("uint8", UInt8),
+    ("uint16", UInt16),
+    ("uint32", UInt32),
+    ("uint64", UInt64),
+    ("float16", Float16),
+    ("float32", Float32),
+    ("float64", Float64),
+    ("complex32", ComplexF16),
+    ("complex64", ComplexF32),
+    ("complex128", ComplexF64),
+)
+
 function PythonCall.pycall(
     f::Py, arg0::Reactant.TracedRArray, argNs::Reactant.TracedRArray...; kwargs...
 )
@@ -16,7 +34,7 @@ function PythonCall.pycall(
     inputs = map((arg0, argNs...)) do arg
         JT = eltype(arg)
         PT = nothing
-        for (CPT, CJT) in PythonCall.Convert.NUMPY_SIMPLE_TYPES
+        for (CPT, CJT) in NUMPY_SIMPLE_TYPES
             if JT == CJT
                 PT = CPT
                 break