Drop compatibility with python 2.7.

Now alembic supports only python from version 3.6.

Change-Id: Iccf124c2d74af801d90a16c9003cdad318768625

1 files changed, 1 insertions, 53 deletions

diff --git a/docs/build/cookbook.rst b/docs/build/cookbook.rst
index d523062..a3de0f8 100644
--- a/docs/build/cookbook.rst
+++ b/docs/build/cookbook.rst
@@ -307,7 +307,7 @@ We'll use a simple value object called ``ReplaceableObject`` that can
 represent any named set of SQL text to send to a "CREATE" statement of
 some kind::
 
-    class ReplaceableObject(object):
+    class ReplaceableObject:
         def __init__(self, name, sqltext):
             self.name = name
             self.sqltext = sqltext
@@ -1445,58 +1445,6 @@ branched revision tree::
 
     :meth:`.ScriptDirectory.get_heads`
 
-Support Non-Ascii Migration Scripts / Messages under Python 2
-==============================================================
-
-To work with a migration file that has non-ascii characters in it under Python
-2, the ``script.py.mako`` file inside of the Alembic environment has to have an
-encoding comment added to the top that will render into a ``.py`` file:
-
-.. code-block:: mako
-
-    <%text># coding: utf-8</%text>
-
-Additionally, individual fields if they are to have non-ascii characters in
-them may require decode operations on the template values.  Such as, if the
-revision message given on the command line to ``alembic revision`` has
-non-ascii characters in it, under Python 2 the command interface passes this
-through as bytes, and Alembic has no decode step built in for this as it is not
-necessary under Python 3.  To decode, add a decoding step to the template for
-each variable that potentially may have non-ascii characters within it.   An
-example of applying this to the "message" field is as follows:
-
-.. code-block:: mako
-
-    <%!
-        import sys
-    %>\
-    <%text># coding: utf-8</%text>
-    """${message.decode("utf-8") \
-       if sys.version_info < (3, ) \
-       and isinstance(message, str) else message}
-
-    Revision ID: ${up_revision}
-    Revises: ${down_revision | comma,n}
-    Create Date: ${create_date}
-
-    """
-    from alembic import op
-    import sqlalchemy as sa
-    ${imports if imports else ""}
-
-    # revision identifiers, used by Alembic.
-    revision = ${repr(up_revision)}
-    down_revision = ${repr(down_revision)}
-    branch_labels = ${repr(branch_labels)}
-    depends_on = ${repr(depends_on)}
-
-
-    def upgrade():
-        ${upgrades if upgrades else "pass"}
-
-
-    def downgrade():
-        ${downgrades if downgrades else "pass"}
 
 Using Asyncio with Alembic
 ==========================