Add Python 3.8 support (#133)

* Fix code generation with attributes of integer literals
* Handle Constant.kind since it was only added in Python 3
* Remove allow_failures for Python 3.8 from .travis.yml

.travis.yml

@@ -17,8 +17,6 @@ matrix:
   - python: 3.8-dev
     sudo: required
     dist: xenial
-  allow_failures:
-  - python: 3.8-dev
 cache: pip
 install:
   - pip install tox-travis

astor/code_gen.py

@@ -534,8 +534,9 @@ class SourceGenerator(ExplicitNodeVisitor):
     def visit_Constant(self, node):
         value = node.value
 
-        if isinstance(value, (float, complex)):
-            self._handle_numeric_constant(value)
+        if isinstance(value, (int, float, complex)):
+            with self.delimit(node):
+                self._handle_numeric_constant(value)
         elif isinstance(value, str):
             self._handle_string_constant(node, node.value)
         elif value is Ellipsis:
@@ -614,6 +615,9 @@ class SourceGenerator(ExplicitNodeVisitor):
 
         if is_joined:
             mystr = 'f' + mystr
+        elif getattr(node, 'kind', False):
+            # Constant.kind is a Python 3.8 addition.
+            mystr = node.kind + mystr
 
         self.write(mystr)
 

astor/op_util.py

@@ -78,6 +78,7 @@ op_data = """
              Pow   **           1
            Await                1
              Num                1
+        Constant                1
 """
 
 op_data = [x.split() for x in op_data.splitlines()]

docs/changelog.rst

@@ -29,6 +29,12 @@ Bug fixes
 .. _`Issue 124`: https://github.com/berkerpeksag/astor/issues/124
 .. _`PR 125`: https://github.com/berkerpeksag/astor/pull/125
 
+* Fixed code generation with attributes of integer literals, and
+  with ``u``-prefixed string literals.
+  (Fixed by Kodi Arfer in `PR 133`_.)
+
+.. _`PR 133`: https://github.com/berkerpeksag/astor/pull/133
+
 0.7.1 - 2018-07-06
 ------------------
 

setup.cfg

@@ -19,11 +19,11 @@ classifiers =
     Programming Language :: Python :: 2.6
     Programming Language :: Python :: 2.7
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.3
     Programming Language :: Python :: 3.4
     Programming Language :: Python :: 3.5
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
     Programming Language :: Python :: Implementation
     Programming Language :: Python :: Implementation :: CPython
     Programming Language :: Python :: Implementation :: PyPy

tests/test_code_gen.py

@@ -181,6 +181,10 @@ class CodegenTestCase(unittest.TestCase, Comparisons):
         # Probably also works on < 3.4, but doesn't work on 2.7...
         self.assertSrcRoundtripsGtVer(source, (3, 4), (2, 7))
 
+    def test_attribute(self):
+        self.assertSrcRoundtrips("x.foo")
+        self.assertSrcRoundtrips("(5).foo")
+
     def test_matrix_multiplication(self):
         for source in ("(a @ b)", "a @= b"):
             self.assertAstRoundtripsGtVer(source, (3, 5))