如何将所有参数放入webapp2中的数据结构(list/dict/etc)

How to get all parameters into a data structure (list/dict/etc) in webapp2

我正在编写一个简单的 webapp2 脚本,它接收传递给它的参数并输出结果。最后,我想将这些参数传递给特定的函数,具体取决于发出的请求类型。

代码:

class partyHandler(webapp2.RequestHandler):
    def get(self, requestType):
        PROCESS = partyRequests();
        self.response.headers['Content-Type'] = 'text/plain'

    #Here's where I would normally request the paramters,
    #There's too many to list
    #EX:
    # name = cgi.escape(self.request.get('name'))
    #
    options = {
        'create':   PROCESS.createParty,
        'retrieve': PROCESS.retrieveParty,
        'update':   PROCESS.updateParty,
        'delete':   PROCESS.deleteParty,
        'join':     PROCESS.joinParty,
        'broadcast':PROCESS.broadcastParty,
        'leave':    PROCESS.leaveParty,
    }
    #THE PARAMETERS WOULD BE PASSED TO ANY FUNCTION ABOVE DEPENDING ON requestType.
    return self.response.write(options[requestType](<PARAMS>))

app = webapp2.WSGIApplication([
('/party/(create|retrieve|update|delete|broadcast|join|leave)/', partyHandler)
], debug=True)

如您所见,有没有办法将所有参数收集到数据结构中(list/dictionary) 并将其传递给函数?

编辑

澄清一下,我的意思是 函数创建采用参数:

name
partyImg
latitudeRestaurant
longitudeRestaurant
address

函数检索采用参数:

partyId

我之前的做法是这样做的:

#IF I'M CALLING retrieve, THESE ARE POINTLESS
name = cgi.escape(self.request.get('name'))
partyImg = cgi.escape(self.request.get('partyImg'))
latitudeRestaurant = cgi.escape(self.request.get('latitudeRestaurant'))
longitudeRestaurant = cgi.escape(self.request.get('longitudeRestaurant'))
address = cgi.escape(self.request.get('address'))

#IF I'M CALLING create, THESE ARE POINTLESS
partyId = cgi.escape(self.request.get('partyId'))


options = {
    'create':   PROCESS.createParty(name, partyImg,latitudeRestaurant,longitudeRestaurant,address),
    'retrieve': PROCESS.retrieveParty(partyId)
}

我不想请求单个参数,而是想将所有参数放入一个数据结构并将其传递给一个函数。

我相信你想用 *args 和 **kwargs 做点什么。

这是有关它的信息: What does ** (double star) and * (star) do for parameters?

最终,对于 args 和 kwargs,它们采用任意参数集合,并且根据传递给谁,您可以在该方法中验证您期望的参数。

因此,例如,对于您的一种方法,例如创建,你需要参数 x 和 y,那么你的创建可能如下所示:

def create(*args, **kwargs):
 ## check for parameters x and y is available in kwargs here and proceed

查看请求的 webapp2 文档,我发现这个有效:

class partyHandler(webapp2.RequestHandler):
    def get(self, requestType):
        PROCESS = partyRequests();
        self.response.headers['Content-Type'] = 'text/plain'

    options = {
        'create':   PROCESS.createParty,
        'retrieve': PROCESS.retrieveParty,
        'update':   PROCESS.updateParty,
        'delete':   PROCESS.deleteParty,
        'join':     PROCESS.joinParty,
        'broadcast':PROCESS.broadcastParty,
        'leave':    PROCESS.leaveParty
    }
    self.response.write(options[requestType](self.request.GET)) <--THIS WORKS

调用这些方法时,它看起来像这样:

def create(self, args):
    username = args['username']
    ...