switch¶

paddle.utils.unique_name. switch ( new_generator=None, new_para_name_checker=None ) [source]

Switch the namespace of in current context to a new namespace. Though switch() and guard() can both change namespace, guard() is recommended since it can manage the context better together with with statement.

Parameters

• new_generator (UniqueNameGenerator, optional) – A new UniqueNameGenerator, not required normally. Default is None, which means switch to a new anonymous namespace.

• new_para_name_checker (DygraphParameterNameChecker, optional) – A new DygraphParameterNameChecker, not required normally. Default is None, which means switch to a new parameter name checker.

Returns

The previous UniqueNameGenerator. DygraphParameterNameChecker: The previous DygraphParameterNameChecker

Return type

UniqueNameGenerator

Examples

import paddle
name1 = paddle.utils.unique_name.generate('fc')
name2 = paddle.utils.unique_name.generate('fc')
print(name1, name2) # fc_0, fc_1

pre_generator, pre_dygraph_name_checker = paddle.utils.unique_name.switch() # switch to a new anonymous namespace.
name2 = paddle.utils.unique_name.generate('fc')
print(name2) # fc_0

paddle.utils.unique_name.switch(pre_generator, pre_dygraph_name_checker) # switch back to pre_generator.
name3 = paddle.utils.unique_name.generate('fc')
print(name3) # fc_2, since pre_generator has generated fc_0, fc_1.