def prefix(self, command):
        class Prefix(object):
            def __enter__(context):
                self._command_prefixes.append(command)

            def __exit__(context, *args):
                self._command_prefixes.pop()
        return Prefix()
Prefix all commands with given command plus ``&&``.
dataset/ETHPy150Open jonathanslenders/python-deployer/deployer/host/base.py/HostContext.prefix