def _add_feed_fetch_ops(self, program, feed, fetch_list, feed_var_name, fetch_var_name):
    tmp_program = program.clone()
    global_block = tmp_program.global_block()
    if (feed_var_name in global_block.vars):
        feed_var = global_block.var(feed_var_name)
    else:
        feed_var = global_block.create_var(name=feed_var_name, type=core.VarDesc.VarType.FEED_MINIBATCH, persistable=True)
    if (fetch_var_name in global_block.vars):
        fetch_var = global_block.var(fetch_var_name)
    else:
        fetch_var = global_block.create_var(name=fetch_var_name, type=core.VarDesc.VarType.FETCH_LIST, persistable=True)
    if (not has_feed_operators(global_block, feed, feed_var_name)):
        for (i, name) in enumerate(feed):
            out = global_block.var(name)
            global_block._prepend_op(type='feed', inputs={'X': [feed_var]}, outputs={'Out': [out]}, attrs={'col': i})
    if (not has_fetch_operators(global_block, fetch_list, fetch_var_name)):
        for (i, var) in enumerate(fetch_list):
            assert (isinstance(var, Variable) or isinstance(var, six.string_types)), ('Wrong type for fetch_list[%s]: %s' % (i, type(var)))
            global_block.append_op(type='fetch', inputs={'X': [var]}, outputs={'Out': [fetch_var]}, attrs={'col': i})
    return tmp_program
def _add_feed_fetch_ops(self, program, feed, fetch_list, feed_var_name, fetch_var_name):
    tmp_program = program.clone()
    global_block = tmp_program.global_block()
    if (feed_var_name in global_block.vars):
        feed_var = global_block.var(feed_var_name)
    else:
        feed_var = global_block.create_var(name=feed_var_name, type=core.VarDesc.VarType.FEED_MINIBATCH, persistable=True)
    if (fetch_var_name in global_block.vars):
        fetch_var = global_block.var(fetch_var_name)
    else:
        fetch_var = global_block.create_var(name=fetch_var_name, type=core.VarDesc.VarType.FETCH_LIST, persistable=True)
    if (not has_feed_operators(global_block, feed, feed_var_name)):
        for (i, name) in enumerate(feed):
            out = global_block.var(name)
            global_block._prepend_op(type='feed', inputs={'X': [feed_var]}, outputs={'Out': [out]}, attrs={'col': i})
    if (not has_fetch_operators(global_block, fetch_list, fetch_var_name)):
        for (i, var) in enumerate(fetch_list):
            assert (isinstance(var, Variable) or isinstance(var, six.string_types)), ('Wrong type for fetch_list[%s]: %s' % (i, type(var)))
            global_block.append_op(type='fetch', inputs={'X': [var]}, outputs={'Out': [fetch_var]}, attrs={'col': i})
    return tmp_program