[API compatibility] add Alias : paddle.diff, paddle.median, paddle.multinomial, paddle.Tensor.exponential_

[zhengshengning]

PR Category

Operator Mechanism

PR Types

Improvements

Description

paddle.diff
paddle.median
paddle.multinomial
paddle.Tensor.exponential_

API Name	Param	Alias
paddle.diff	x,axis	input, dim
paddle.median	x,axis	input,dim
paddle.multinomial	x	input
paddle.Tensor.exponential_leave	lam	lambd

【添加一个可以设置默认参数的类】
使用场景：当torch没有某个参数时，需要设置一个paddle对应的参数才能与torch原本的含义对齐，新增的default_params字典为torch设置的对应参数。

class SetDefaultParaAliasDecorator(DecoratorBase):
    def __init__(self, alias_mapping: dict[str, Iterable[str]], default_params: dict[str, Any],) -> None:
        ......
        self.default_params = default_params
        warnings.simplefilter("always", category=Warning)

    def process(self, args: tuple[Any, ...], kwargs: dict[str, Any]) -> tuple[tuple[Any, ...], dict[str, Any]]:
        is_torch_call = False
        ........
        if is_torch_call:
            warnings.warn( "Set default parameters " + str(self.default_params), category=Warning,)
            for key, value in self.default_params.items():
                if key not in kwargs:
                    kwargs[key] = value
        return args, kwargs

使用：

@SetDefaultParaAliasDecorator(
    {"x": ["input"], "axis": ["dim"]}, {"mode": 'min'}
)
void func(...){
}

Other
增加了单测

pcard-67164

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 92.30769% with 3 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (develop@c466f94). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
python/paddle/utils/decorator_utils.py	90.32%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             develop   #74568   +/-   ##
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  Coverage           ?   92.30%           
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  Files              ?        4           
  Lines              ?       39           
  Branches           ?        0           
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  Hits               ?       36           
  Misses             ?        3           
  Partials           ?        0           

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[zhengshengning]

/re-run all-failed