Merge pull request !619 from JoyLvliang/pynative-clean-reviewbot-warning

Merge pull request !615 from Simson/push-to-opensource

Merge pull request !556 from Chong/partition

Merge pull request !611 from JichenZhao/errormsg

Merge pull request !612 from huanghui/fix-confusion-softmax-grad-rule-pass

Merge pull request !549 from wsc/bert_readme

Merge pull request !613 from liubuyu/master

Merge pull request !606 from pengyanjun/fix_dataset_api_doc_change_line

Merge pull request !572 from gengdongjie/master

Merge pull request !604 from yanghaitao/yht_generatordataset_col_list

Merge pull request !582 from ZPaC/add-dynamic-lr-in-nccl-case

add cache for PythonPrimEvaluator. Be careful that
 the infer function of PythonPrimitive in python code should
 be idempotent.

Merge pull request !573 from seatea/fix-parse-attribute-bug

Merge pull request !375 from fary86/add_prim_name_to_error_message_for_grad_ops

Merge pull request !461 from wsc/master

Merge pull request !610 from wukesong/modify_lenet_alexnet_readme

Merge pull request !504 from candanzg/tensor_assign_with_slice

Merge pull request !605 from liubuyu/master

Merge pull request !590 from caifubi/set-fp-start-point-after-getnext

Merge pull request !181 from lyfne/cse_fix

Merge pull request !580 from panfengfeng/panff/fix_log_print_in_ge

Merge pull request !600 from dengwentao/modify_tbe_attr_log