Teach inspectdb to handle SQL column names that are digits.

There's no accounting for taste in the way some people name columns,
apparently. Create a column with a name of "1" and inspectdb will still
produce valid Python code now. Fixed #16536. Thanks tereaom and
danodonovan.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16641 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Author: mtredinnick

django/core/management/commands/inspectdb.py

@@ -101,6 +101,12 @@ def handle_inspection(self, options):
                     att_name += '_field'
                     comment_notes.append('Field renamed because it was a Python reserved word.')
 
+                if att_name.isdigit():
+                    att_name = 'number_%d' % int(att_name)
+                    extra_params['db_column'] = unicode(column_name)
+                    comment_notes.append("Field renamed because it wasn't a "
+                        "valid Python identifier.")
+
                 # Don't output 'id = meta.AutoField(primary_key=True)', because
                 # that's assumed if it doesn't exist.
                 if att_name == 'id' and field_type == 'AutoField(' and extra_params == {'primary_key': True}: