- [bug] Fixed the regexp that was checking for .py files

in the version directory to allow any .py file through.
  Previously it was doing some kind of defensive checking,
  probably from some early notions of how this directory
  works, that was prohibiting various filename patterns
  such as those which begin with numbers.  #72

CHANGES

@@ -5,6 +5,13 @@
   front-ends can re-use the argument parsing built
   in.  #70
 
+- [bug] Fixed the regexp that was checking for .py files
+  in the version directory to allow any .py file through.
+  Previously it was doing some kind of defensive checking,
+  probably from some early notions of how this directory
+  works, that was prohibiting various filename patterns
+  such as those which begin with numbers.  #72
+
 - [bug] Fixed MySQL rendering for server_default which
   didn't work if the server_default was a generated
   SQL expression.  Courtesy Moriyoshi Koizumi.

alembic/script.py

@@ -4,10 +4,9 @@ import os
 from alembic import util
 import shutil
 import re
-import inspect
 import datetime
 
-_rev_file = re.compile(r'([a-z0-9A-Z]+)(?:_.*)?\.py$')
+_rev_file = re.compile(r'.*\.py$')
 _legacy_rev = re.compile(r'([a-f0-9]+)\.py$')
 _mod_def_re = re.compile(r'(upgrade|downgrade)_([a-z0-9]+)')
 _slug_re = re.compile(r'\w+')
@@ -418,8 +417,7 @@ class Script(object):
 
     @classmethod
     def _from_filename(cls, dir_, filename):
-        m = _rev_file.match(filename)
-        if not m:
+        if not _rev_file.match(filename):
             return None
         module = util.load_python_file(dir_, filename)
         if not hasattr(module, "revision"):

tests/test_revision_create.py

@@ -70,12 +70,14 @@ class GeneralOrderedTests(unittest.TestCase):
 
     def test_008_long_name(self):
         rid = util.rev_id()
-        script = env.generate_revision(rid,
+        env.generate_revision(rid,
                 "this is a really long name with "
                 "lots of characters and also "
                 "I'd like it to\nhave\nnewlines")
         assert os.access(
-            os.path.join(env.dir, 'versions', '%s_this_is_a_really_lon.py' % rid), os.F_OK)
+            os.path.join(env.dir, 'versions',
+                        '%s_this_is_a_really_lon.py' % rid), os.F_OK)
+
 
     @classmethod
     def setup_class(cls):
@@ -110,9 +112,10 @@ class ScriptNamingTest(unittest.TestCase):
             "message_2012_5_25_15_5_5.py" % staging_directory
         )
 
+
 class TemplateArgsTest(unittest.TestCase):
     def setUp(self):
-        env = staging_env()
+        staging_env()
         self.cfg = _no_sql_testing_config(
             directives="\nrevision_environment=true\n"
         )
@@ -123,17 +126,17 @@ class TemplateArgsTest(unittest.TestCase):
     def test_args_propagate(self):
         config = _no_sql_testing_config()
         script = ScriptDirectory.from_config(config)
-        template_args = {"x":"x1", "y":"y1", "z":"z1"}
+        template_args = {"x": "x1", "y": "y1", "z": "z1"}
         env = EnvironmentContext(
             config,
             script,
-            template_args = template_args
+            template_args=template_args
         )
-        mig_env = env.configure(dialect_name="sqlite",
-                        template_args={"y":"y2", "q":"q1"})
+        env.configure(dialect_name="sqlite",
+                        template_args={"y": "y2", "q": "q1"})
         eq_(
             template_args,
-            {"x":"x1", "y":"y2", "z":"z1", "q":"q1"}
+            {"x": "x1", "y": "y2", "z": "z1", "q": "q1"}
         )
 
     def test_tmpl_args_revision(self):