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+%22%22%22add email validation column%0A%0ARevision ID: bbba2255e00%0ARevises: 38a8a6299086%0ACreate Date: 2014-12-16 14:18:45.290836%0A%0A%22%22%22%0A%0A# revision identifiers, used by Alembic.%0Arevision = 'bbba2255e00'%0Adown_revision = '38a8a6299086'%0A%0Afrom alembic import op%0Aimport sqlalchemy as sa%0A%0A%0Adef upgrade():%0A    op.add_column('user', sa.Column('valid_email', sa.Boolean, default=False))%0A    query = 'UPDATE %22user%22 SET valid_email=false;'%0A    op.execute(query)%0A%0A%0Adef downgrade():%0A    op.drop_column('user', 'valid_email')%0A

Add validation column for email address.