{"id":206994,"date":"2020-11-26T07:01:30","date_gmt":"2020-11-25T23:01:30","guid":{"rendered":"http:\/\/4563.org\/?p=206994"},"modified":"2020-11-26T07:01:30","modified_gmt":"2020-11-25T23:01:30","slug":"%e8%bf%ab%e4%ba%8e%e5%b9%b4%e7%ba%aa%e5%a4%a7%e5%81%a5%e5%bf%98%ef%bc%8c%e5%86%99%e4%ba%86%e4%b8%aa%e7%ae%80%e9%99%8b%e7%9a%84%e8%a3%85%e9%a5%b0%e5%99%a8%ef%bc%8c%e8%bd%ac%e6%8d%a2%e8%be%93%e5%85%a5","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=206994","title":{"rendered":"\u8feb\u4e8e\u5e74\u7eaa\u5927\u5065\u5fd8\uff0c\u5199\u4e86\u4e2a\u7b80\u964b\u7684\u88c5\u9970\u5668\uff0c\u8f6c\u6362\u8f93\u5165\u7c7b\u578b"},"content":{"rendered":"
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\u8feb\u4e8e\u5e74\u7eaa\u5927\u5065\u5fd8\uff0c\u5199\u4e86\u4e2a\u7b80\u964b\u7684\u88c5\u9970\u5668\uff0c\u8f6c\u6362\u8f93\u5165\u7c7b\u578b <\/h1>\n

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\u8cc7\u6df1\u5927\u4f6c : imn1 <\/span> <\/i> 0<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u9996\u5148\uff0c\u662f \u771f \u7b80\u964b<\/p>\n

\u81ea\u7528\u7684\uff0c\u51fa\u4e86\u95ee\u9898\u62bd\u81ea\u5df1\u5634\u5df4\u5c31\u884c\u4e86\uff0c\u4f46\u65e0\u6cd5\u5bf9\u4ed6\u4eba\u8d1f\u8d23\uff0c\u6240\u4ee5\u5404\u4f4d\u8981\u7528\u5c31\u8c28\u614e\u518d\u8c28\u614e\uff0c\u6d4b\u8bd5\u591a\u51e0\u904d\uff0c\u5c3d\u91cf\u53ea\u7528\u5728\u57fa\u7840\u7c7b\u578b\uff0c\u6cdb\u7c7b\u578b\u6216\u8005\u590d\u6742\u7684\u7c7b\u578b\u5d4c\u5957\u4f30\u8ba1\u8fd9\u4e2a\u89e3\u51b3\u4e0d\u4e86<\/p>\n

\u4f5c\u7528\uff1a\u4f5c\u4e3a\u88c5\u9970\u5668\uff0c\u6839\u636e\u51fd\u6570\u7684 type hints\uff0c\u76f8\u540c\u7c7b\u578b\u8df3\u8fc7\uff0c\u7c7b\u578b\u4e0d\u7b26\u5c31\u8c03\u7528 funs \u6307\u5b9a\u51fd\u6570\u8f6c\u6362\uff0c\u518d\u4f20\u7ed9\u88ab\u88c5\u9970\u7684\u51fd\u6570\u3002 \u4e0d\u5efa\u8bae\u7528\u5728\u4ea7\u51fa\u73af\u5883\uff0c\u5f53\u7136\u4f60\u80fd\u628a\u201c\u771f\u7b80\u964b\u201d\u53d8\u4e3a\u201c\u771f\u5b8c\u7f8e\u201d\uff0c\u90a3\u5c31\u53e6\u8bf4<\/p>\n

\u8d77\u610f\uff1a\u5c31\u662f\u5065\u5fd8\uff0c\u7ecf\u5e38\u5fd8\u8bb0\u4ee5\u524d\uff08\u4e09\u5929\u524d\u5c31\u7b97\u201c\u4ee5\u524d\u201d\uff09\u5199\u7684\u51fd\u6570\u8f93\u51fa\u7c7b\u578b\uff0c\u65b0\u5199\u4e2a\u51fd\u6570\uff0c\u5904\u7406\u5b57\u7b26\u4e32\u8f93\u51fa\uff0c\u5374\u53d1\u73b0\u4f20\u5165\u7684\u662f\u4e2a int \/ float\uff0c\u60f3\u6539\u67d0\u4e2a\u5217\u8868\u5143\u7d20\uff0c\u5374\u53d1\u73b0\u4f20\u5165\u662f\u4e2a tuple\uff0c\u7528\u5728\u8fd9\u4e9b\u68c0\u67e5\u3001\u4fee\u6539\u82b1\u4e86\u4e0d\u5c11\u65f6\u95f4\uff0c\u5c31\u60f3\u7b80\u5355\u5957\u4e2a\u88c5\u9970\u5668\uff0c\u5148\u8dd1\u901a\u518d\u8bf4\uff0creview \u4fee\u6b63\u7559\u5f85\u4ee5\u540e\u5904\u7406<\/p>\n

\u56e0\u4e3a\u81ea\u7528\uff0c\u6211\u5199\u7684 py \u51e0\u4e4e\u6ca1\u6709\u5bf9\u5916\uff0c\u6240\u4ee5\u5f04\u4e2a @\u4fee\u6b63\u5c31\u7b97\u4e86\uff0c\u61d2\u5f97\u9010\u4e2a\u67e5\u627e\u66f4\u6539\uff0c\u5982\u679c\u503c\u4e0d\u5bf9\u518d\u67e5\uff0c\u6216\u8005\u540e\u671f\u8981\u5b8c\u5584\u4ee3\u7801\u65f6\uff0c\u518d\u53bb\u6389 @\u6162\u6162\u6539<\/p>\n

\u8bf4\u660e\uff1a<\/p>\n

    \n
  1. \u53ef\u4f5c\u4e3a\u65e0\u53c2\u6570\u88c5\u9970\u5668<\/li>\n
  2. varnames \u9ed8\u8ba4 None\uff0c\u5c31\u5bf9\u4f20\u5165\u7684\u53c2\u6570\u8f6e\u8be2\u4e00\u904d\uff0c\u7b26\u5408 type hint \u7684\uff0c\u6216\u8005 funs \/ despatcher \u6ca1\u6709\u7684\u7c7b\u578b\u8df3\u8fc7\u3002 \u5982\u679c\u975e None\uff0c\u683c\u5f0f\u662f\u4e2a\u5b57\u7b26\u4e32\u5217\u8868\uff08 list\/tuple\/set \u7b49\uff09\uff0c\u5217\u51fa\u9700\u8981\u68c0\u67e5\u7684\u53d8\u91cf\u540d\u3002 \u6ca1\u505a\u9012\u5f52\uff0c\u6240\u4ee5 args\uff0ckwargs \u4f20\u5165\u7684\u5c31\u6ca1\u7528\u4e86\uff08\u8fd9\u4e24\u4e2a\u4e5f\u6ca1 type hint \u5427\uff1f\uff09<\/li>\n
  3. despatcher \u9ed8\u8ba4 None\uff0c\u5c31\u662f\u9884\u7f6e\u7684 funs\uff0c\u662f\u4e2a \u201c\u7c7b\u578b\uff1a\u51fd\u6570\u540d\u201d \u7684\u952e\u503c\u5bf9 dict\uff0c\u53ef\u4ee5\u5916\u90e8\u4f20\u5165\u3002 \u90a3\u4e9b to \u4ec0\u4e48\u7684\u51fd\u6570\u6211\u5c31\u4e0d\u63d0\u4f9b\u4e86\uff0c\u653e\u51fa\u6765\u4f1a\u5bb3\u6b7b\u4eba\u7684\uff0c\u4f8b\u5982\u6211 toStr \u76f4\u63a5\u628a\u5217\u8868\u7c7b\u578b\u7528\u9017\u53f7\u4e32\u8d77\u6765\u4e86\uff0c\u56e0\u4e3a\u51e0\u4e4e\u53ea\u7528\u5728 sql \u76f8\u5173\u7684\u51fd\u6570\uff0c\u5b57\u6bb5\u540d\u662f\u5b57\u4e32\uff0c\u4f46\u603b\u662f\u5fd8\u8bb0\u4e0a\u4e00\u4e2a\u51fd\u6570\u8f93\u51fa\u7684\u662f\u5217\u8868\u8fd8\u662f\u5b57\u4e32<\/li>\n
  4. checktypes \u53ca is_instance \u662f\u4eba\u5bb6\u5199\u7684\uff0c\u8fd9\u91cc\u5c31\u4e0d\u8d34\u4e86\uff0c\u4ee3\u7801\u5728 https:\/\/stackoverflow.com\/questions\/55503673\/how-do-i-check-if-a-value-matches-a-type-in-python \u5f88\u957f\u770b\u4e0a\u53bb\u4e5f\u5f88\u4e25\u8c28\uff0c\u6211\u5c31\u6ca1\u8be6\u7ec6\u7814\u7a76\u4e86\uff0c\u4f38\u624b\u4e86\u4e8b<\/li>\n
  5. type hint \u5c31\u4e0d\u7528\u8bf4\u7248\u672c\u4e86\u5427\uff0c\u8fd9\u4e2a\u4ec5\u5728 3.7.5 \u6d4b\u8bd5\uff0c\u624b\u5934\u4e5f\u6ca1\u66f4\u591a py \u7248\u672c<\/li>\n
  6. \u6709\u9519\u8bef\u8bf7\u6307\u51fa\uff0c\u4e5f\u5e2e\u6211\u4ee5\u540e\u907f\u514d\u5f15\u5165\u65b0\u95ee\u9898<\/li>\n
  7. \u8fd9\u6bb5\u4ee3\u7801\u65e0\u7248\u6743\uff0c\u5404\u53d6\u6240\u9700\uff08\u8c01\u7528\u8c01\u8d1f\u8d23\uff09\uff0c\u81f3\u4e8e\u524d\u9762\u7b2c 4 \u70b9\u5f15\u7528\u7684\u4ee3\u7801\uff0c\u7248\u6743\u81ea\u7406\uff0c\u6211\u4e5f\u4e0d\u6e05\u695a<\/li>\n<\/ol>\n
    import inspect from functools import singledispatch, wraps, partial from checktypes import is_instance # \u8bf4\u660e 4  def toStr(source)->str:     return str(source)  def toInt(source)->int:     return int(source)  def typeshint(func=None, *, varnames=None, despatcher=None):     if func is None:         return partial(typeshint, varnames=varnames, despatcher=despatcher)      funs = { # \u8bf4\u660e 3         int: toInt,         str: toStr,         # list: toList,         # tuple: toTuple,         # set: toSet,         # dict: toDict,     }     despatcher = despatcher if despatcher else funs     sig = inspect.signature(func)     parameters = sig.parameters     varnames = varnames if varnames else parameters.keys()      @wraps(func)     def wrapper(*args, **kwargs):         varkw = inspect.getfullargspec(func).varkw         binds = sig.bind(*args, **kwargs)         for n in varnames:             annotation = parameters[n].annotation             var = binds.arguments[n] if n in binds.arguments else kwargs[n]             if is_instance(var, annotation) or (annotation not in despatcher): continue             ff = despatcher.get(annotation)             if n in binds.arguments:                 binds.arguments[n] = ff(var)             else:                 binds.arguments[varkw][n] = ff(var)         return func(*binds.args, **binds.kwargs)     return wrapper  if __name__ == \"__main__\":     @typeshint     def myfunc(a:str, b:int=4, c=0):         print(type(a), a, b, c)      myfunc(20, '123', '0') # <class 'str'> 20 123 0  <\/code><\/pre>\n
    \u4e24\u4e09\u4e8b\uff1a<\/p>\n
    python \u771f\u662f\u4ec0\u4e48\u90fd\u662f\u5bf9\u8c61\uff0c\u624d\u53d1\u73b0\u7c7b\u578b\u4e5f\u80fd\u505a keys<\/p>\n
    \u8fd9\u4e2a varnames \u62a5\u9519\u67e5\u4e86\u51e0\u4e2a\u5c0f\u65f6\uff0c\u5c31\u56e0\u4e3a\u6700\u521d sig \u662f\u5199\u5728 wrapper \u91cc\u9762\uff0c\u5728 wrapper \u91cc\u9762\u7528 if varnames is None \u5c31\u62a5\u9519\uff0c\u8981\u4e00\u8d77\u79fb\u5230 wrapper \u5916\u9762\u3002\u5509\uff0c\u6c34\u5e73\u4f4e\uff0c\u4f1a\u6284\u4f1a\u6539\u4e0d\u4f1a\u5199\u2026\u2026<\/p>\n
    \u53e6\u5916\u6709\u4e24\u4e2a\u7c7b\u4f3c\u7684\uff0c\u4e00\u4e2a\u81ea\u52a8\u9002\u5e94\u683c\u5f0f\u7684\uff0c\u4f8b\u5982 json\/yaml \u8f6c\u5b57\u5178\u3001csv \u8f6c\u4e8c\u7ef4\uff0c\u8bf8\u5982\u6b64\u7c7b\uff0c\u4e00\u4e2a\u6839\u636e return type hint \u8f6c\u6362\u8f93\u51fa\u7c7b\u578b\u7684\uff0c\u56e0\u4e3a\u9b54\u6539\u5f97\u592a\u5389\u5bb3\uff08\u53ea\u6709\u81ea\u5df1\u80fd\u7528\uff09\uff0c\u5bb3\u6b7b\u4eba\u7684\u4ee3\u7801\u5c31\u4e0d\u653e\u51fa\u6765\u4e86\uff0c\u53cd\u6b63\u76ee\u7684\u548c\u601d\u8def\u5dee\u4e0d\u591a\u2014\u2014\u5148\u8dd1\u901a\u518d\u8bf4<\/p>\n<\/p><\/div>\n
     \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (3<\/span>)        <\/div>\n
     <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
      \n
    • \n
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       \u8cc7\u6df1\u5927\u4f6c : ClericPy <\/span>  <\/div>\n
       <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                   \u4ee5\u524d\u4e5f\u505a\u8fc7\u7c7b\u4f3c\u7684, \u628a\u4e00\u4e2a\u6709 type hints \u7684\u51fd\u6570\u8f6c\u4ea4\u4e92\u5f0f\u547d\u4ee4\u884c, \u5404\u79cd\u7c7b\u578b\u6298\u817e\u7684, \u540e\u6765\u88ab pydantic.parse_obj \u6559\u505a\u4eba…                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
    • \n
      \n
      \n
       \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : imn1 <\/span>  <\/div>\n
       <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                   @ClericPy 
      \u641c\u4e86\u51e0\u5929 type hint \u90fd\u6ca1\u9047\u5230\u8fd9\u4e2a\u6a21\u5757\uff0c\u90fd\u7b97\u795e\u5947\uff0c\u62bd\u7a7a\u770b\u770b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
    • \n
      \n
      \n
       \u8cc7\u6df1\u5927\u4f6c : ClericPy <\/span>  <\/div>\n
       <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                   @imn1 \u8fd9\u662f\u5708\u5185\u6700\u6d41\u884c\u90a3\u4e2a\u4e86(\u597d\u50cf fastapi \u5e26\u8d77\u6765\u7684?), \u8fd8\u505a\u4e86 Benchmark… \u73b0\u5728\u62ff\u5b83\u505a schema \u6821\u9a8c\u597d\u7528\u7684\u4e00\u584c\u7cca\u6d82, \u80fd\u628a\u4e0d\u7b26\u5408\u7684\u7c7b\u578b\u5c1d\u8bd5\u6027\u53bb\u8f6c\u6362, \u7ed3\u679c\u8ba9\u63a5\u624b\u6211\u4ee3\u7801\u7684\u4ee5\u4e3a\u6211\u5728\u5199 go…..                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
    • \n","protected":false},"excerpt":{"rendered":"
      \u8feb\u4e8e\u5e74\u7eaa\u5927\u5065\u5fd8\uff0c\u5199\u4e86\u4e2a\u7b80\u964b\u7684\u88c5\u9970\u5668…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/206994"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=206994"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/206994\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=206994"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=206994"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=206994"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}