add py macro to API

Author: Christopher Doris

src/API/exports.jl

@@ -96,6 +96,7 @@ export pycallable
 export pycompile
 export @pyeval
 export @pyexec
+export @py
 export @pyconst
 
 # Convert

src/API/macros.jl

@@ -5,3 +5,6 @@ macro pyconst end
 
 # Convert
 macro pyconvert end
+
+# PyMacro
+macro py end

src/PyMacro/PyMacro.jl

@@ -21,6 +21,8 @@ module PyMacro
 using ..PythonCall
 using ..Core
 
+import ..PythonCall: @py
+
 using MacroTools: MacroTools, @capture, isexpr
 
 const PY_MACRO_NILOPS = Dict(
@@ -877,6 +879,5 @@ See the online documentation for more details.
 macro py(ex)
     esc(py_macro(ex, __module__, __source__))
 end
-export @py
 
 end