<s> """<STR_LIT>""" <EOL> from alembic import op <EOL> revision = "<STR_LIT>" <EOL> down_revision = "<STR_LIT>" <EOL> def upgrade ( ) : <EOL> op . execute ( <EOL> """<STR_LIT>""" <EOL> ) <EOL> op . alter_column ( "<STR_LIT>" , "<STR_LIT:path>" , nullable = False ) <EOL> def downgrade ( ) : <EOL> op . alter_column ( "<STR_LIT>" , "<STR_LIT:path>" , nullable = True ) </s>
