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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _set(self, jsonData) : """Initialize all fields at once. If no password is specified, it will be set as an empty string"""

        
        self["username"] = jsonData["user"]
        self["active"] = jsonData["active"]
        self["extra"] = jsonData["extra"]
        try:
            self["changePassword"] = jsonData["changePassword"]
        except Exception as e:
            pass
            # self["changePassword"] = ""
        
        try :
            self["password"] = jsonData["passwd"]
        except KeyError :
            self["password"] = ""

        self.URL = "%s/user/%s" % (self.connection.URL, self["username"])