Support attribute access from other modules

numba/core/base.py

@@ -588,7 +588,7 @@ def get_bound_function(self, builder, obj, ty):
         assert self.get_value_type(ty) == obj.type
         return obj
 
-    def get_getattr(self, typ, attr):
+    def get_getattr(self, builder, typ, attr):
         """
         Get the getattr() implementation for the given type and attribute name.
         The return value is a callable with the signature
@@ -607,7 +607,7 @@ def get_getattr(self, typ, attr):
                 return None
             else:
                 pyval = getattr(typ.pymod, attr)
-                llval = self.get_constant(attrty, pyval)
+                llval = self.get_constant_generic(builder, attrty, pyval)
                 def imp(context, builder, typ, val, attr):
                     return impl_ret_borrowed(context, builder, attrty, llval)
                 return imp

numba/core/lowering.py

@@ -1110,7 +1110,7 @@ def lower_expr(self, resty, expr):
                 self.incref(resty, res)
                 return res
             else:
-                impl = self.context.get_getattr(ty, expr.attr)
+                impl = self.context.get_getattr(self.builder, ty, expr.attr)
                 attrty = self.context.typing_context.resolve_getattr(ty,
                                                                      expr.attr)
 

numba/core/optional.py

@@ -50,7 +50,7 @@ def optional_getattr(context, builder, typ, value, attr):
     """
     inner_type = typ.type
     val = context.cast(builder, value, typ, inner_type)
-    imp = context.get_getattr(inner_type, attr)
+    imp = context.get_getattr(builder, inner_type, attr)
     return imp(context, builder, inner_type, val, attr)
 
 

numba/cpython/builtins.py

@@ -141,7 +141,7 @@ def deferred_getattr(context, builder, typ, value, attr):
     """
     inner_type = typ.get()
     val = context.cast(builder, value, typ, inner_type)
-    imp = context.get_getattr(inner_type, attr)
+    imp = context.get_getattr(builder, inner_type, attr)
     return imp(context, builder, inner_type, val, attr)
 
 @lower_cast(types.Any, types.DeferredType)

numba/np/arrayobj.py

@@ -2421,7 +2421,7 @@ def record_getitem(context, builder, sig, args):
     """
     Record.__getitem__ redirects to getattr()
     """
-    impl = context.get_getattr(sig.args[0], args[1])
+    impl = context.get_getattr(builder, sig.args[0], args[1])
     return impl(context, builder, sig.args[0], args[0], args[1])
 
 

numba/np/npyimpl.py

@@ -413,7 +413,7 @@ def cast(self, val, fromty, toty):
             # attempt conversion of the real part to the specified type.
             # note that NumPy issues a warning in this kind of conversions
             newty = fromty.underlying_float
-            attr = self.context.get_getattr(fromty, 'real')
+            attr = self.context.get_getattr(self.builder, fromty, 'real')
             val = attr(self.context, self.builder, fromty, val, 'real')
             fromty = newty
             # let the regular cast do the rest...

numba/tests/test_objects.py

@@ -4,11 +4,11 @@
 
 
 import unittest
+from numba import njit
 from numba.core.compiler import compile_isolated, Flags
 from numba.core import types
 from numba.tests.support import TestCase
 
-
 enable_pyobj_flags = Flags()
 enable_pyobj_flags.set("enable_pyobject")
 
@@ -30,6 +30,12 @@ def delattr_usecase(o):
 
 
 class TestAttributes(TestCase):
+    def test_getattr(self, flags=enable_pyobj_flags):
+        import numba.tests.usecases as uc
+        @njit
+        def f():
+            return uc._GLOBAL_STR
+        self.assertEquals(f(), "abc")
 
     def test_setattr(self, flags=enable_pyobj_flags):
         pyfunc = setattr_usecase

numba/tests/usecases.py

@@ -2,6 +2,8 @@
 import numpy as np
 from numba import jit
 
+_GLOBAL_STR = "abc"
+
 def sum1d(s, e):
     c = 0
     for i in range(s, e):