class_docstr: StrategyGenerator is used to generate the same group of sharding strategies.
  
  TODO: remove the original strategy_generator.py after refactoring
class_docstr_tok: ["StrategyGenerator","is","used","to","generate","the","same","group","of","sharding","strategies",".","TODO",":","remove","the","original","strategy_generator.py","after","refactoring"]
docstr: Generate all possible sharding strategies for this operation.
docstr_tok: ["Generate","all","possible","sharding","strategies","for","this","operation","."]
code: def generate(self) -> List[ShardingStrategy]:
      """
      Generate all possible sharding strategies for this operation.
      """
      strategies = self.collate_strategies()
  
      # some strategies may be None as ignore_sharding_exception may return None
      # when ShardingSpecException occurs.
      # thus, remove those None values
      strategies = [strategy for strategy in strategies if strategy]
  
      # update the costs
      # update mete info on cost
      # these update methods are all in-place, the default method will do nothing
      # the cost info will only be added if the child class overrides these methods
      for strategy in strategies:
          self.update_communication_cost(strategy)
          self.update_compute_cost(strategy)
          self.update_memory_cost(strategy)
  
      return strategies
  
imports: import operator
  from abc import ABC, abstractmethod
  from functools import reduce
  from typing import Any, Dict, List, Union
  import torch
  from torch.fx import Node
  from colossalai.auto_parallel.tensor_shard.sharding_strategy import CommAction, CommType, OperationData, OperationDataType, ShardingStrategy, TrainCycleItem
  from colossalai.device.device_mesh import DeviceMesh
  from colossalai.tensor.shape_consistency import CollectiveCommPattern, CommSpec, ShapeConsistencyManager
  from colossalai.tensor.sharding_spec import ShardingSpec
  from colossalai.tensor.utils import convert_dim_partition_dict
label_desc: Use image node_id 14 for calling the StrategyGenerator obj's underlying member method code with example usage: obj.generate() and returns: strategies