Keyword args to SimpleXMLRPCServer
Why is the following not working? Is there any way to get keyword
arguments working with exposed XMLRPC functions?
server.py
import SocketServer
from SimpleXMLRPCServer import
SimpleXMLRPCServer,SimpleXMLRPCRequestHandler
# Threaded mix-in
class
AsyncXMLRPCServer(SocketServer.ThreadingMixIn,SimpleXMLRPCServer):
pass
class XMLFunctions(object):
def returnArgs(*args, **kwargs):
return kwargs.items()
# Instantiate and bind to localhost:1234
server = AsyncXMLRPCServer(('', 8080), SimpleXMLRPCRequestHandler)
# Register example object instance
server.register_instance(XMLFunctions())
# run!
server.serve_forever()
client.py
from xmlrpclib import ServerProxy, Error
server = ServerProxy(http://localhost:8080;, allow_none=1) # local
server
try:
print server.returnArgs(foo, bar=bar, baz=baz)
except Error, v:
print ERROR, v
[seans-imac:~/Desktop/] halfitalian% ./client.py
Traceback (most recent call last):
File ./XMLRPC_client.py, line 9, in module
print server.returnArgs(foo, bar=bar, baz=baz)
TypeError: __call__() got an unexpected keyword argument 'bar'
~Sean
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Re: Keyword args to SimpleXMLRPCServer
On Dec 17, 4:13 pm, Sean DiZazzo [EMAIL PROTECTED] wrote:
Why is the following not working? Is there any way to get keyword
arguments working with exposed XMLRPC functions?
server.py
import SocketServer
from SimpleXMLRPCServer import
SimpleXMLRPCServer,SimpleXMLRPCRequestHandler
# Threaded mix-in
class
AsyncXMLRPCServer(SocketServer.ThreadingMixIn,SimpleXMLRPCServer):
pass
class XMLFunctions(object):
def returnArgs(*args, **kwargs):
return kwargs.items()
# Instantiate and bind to localhost:1234
server = AsyncXMLRPCServer(('', 8080), SimpleXMLRPCRequestHandler)
# Register example object instance
server.register_instance(XMLFunctions())
# run!
server.serve_forever()
client.py
from xmlrpclib import ServerProxy, Error
server = ServerProxy(http://localhost:8080;, allow_none=1) # local
server
try:
print server.returnArgs(foo, bar=bar, baz=baz)
except Error, v:
print ERROR, v
[seans-imac:~/Desktop/] halfitalian% ./client.py
Traceback (most recent call last):
File ./XMLRPC_client.py, line 9, in module
print server.returnArgs(foo, bar=bar, baz=baz)
TypeError: __call__() got an unexpected keyword argument 'bar'
~Sean
PS. The same thing happens if you don't use **kwargs...
...
class XMLFunctions(object):
def returnArgs(foo, bar=None, baz=None):
return foo, bar, baz
...
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Re: Keyword args to SimpleXMLRPCServer
Sean DiZazzo [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
| Why is the following not working? Is there any way to get keyword
| arguments working with exposed XMLRPC functions?
|
| server.py
| import SocketServer
| from SimpleXMLRPCServer import
| SimpleXMLRPCServer,SimpleXMLRPCRequestHandler
|
| # Threaded mix-in
| class
| AsyncXMLRPCServer(SocketServer.ThreadingMixIn,SimpleXMLRPCServer):
| pass
|
| class XMLFunctions(object):
|def returnArgs(*args, **kwargs):
|return kwargs.items()
|
| # Instantiate and bind to localhost:1234
| server = AsyncXMLRPCServer(('', 8080), SimpleXMLRPCRequestHandler)
|
| # Register example object instance
| server.register_instance(XMLFunctions())
|
| # run!
| server.serve_forever()
|
| client.py
| from xmlrpclib import ServerProxy, Error
|
| server = ServerProxy(http://localhost:8080;, allow_none=1) # local
| server
|
| try:
|print server.returnArgs(foo, bar=bar, baz=baz)
| except Error, v:
|print ERROR, v
|
|
| [seans-imac:~/Desktop/] halfitalian% ./client.py
| Traceback (most recent call last):
| File ./XMLRPC_client.py, line 9, in module
|print server.returnArgs(foo, bar=bar, baz=baz)
| TypeError: __call__() got an unexpected keyword argument 'bar'
In general, C function do not recognize keyword arguments.
But the error message above can be reproduced in pure Python.
def f(): pass
f(bar='baz')
Traceback (most recent call last):
File pyshell#2, line 1, in -toplevel-
f(bar='baz')
TypeError: f() takes no arguments (1 given)
def f(x): pass
f(bar='baz')
Traceback (most recent call last):
File pyshell#5, line 1, in -toplevel-
f(bar='baz')
TypeError: f() got an unexpected keyword argument 'bar'
Whereas calling a C function typically gives
''.join(bar='baz')
Traceback (most recent call last):
File pyshell#6, line 1, in -toplevel-
''.join(bar='baz')
TypeError: join() takes no keyword arguments
But I don't know *whose* .__call__ method got called,
so I can't say much more.
tjr
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Re: Keyword args to SimpleXMLRPCServer
En Mon, 17 Dec 2007 21:13:32 -0300, Sean DiZazzo [EMAIL PROTECTED]
escribió:
Why is the following not working? Is there any way to get keyword
arguments working with exposed XMLRPC functions?
server.py
import SocketServer
from SimpleXMLRPCServer import
SimpleXMLRPCServer,SimpleXMLRPCRequestHandler
# Threaded mix-in
class
AsyncXMLRPCServer(SocketServer.ThreadingMixIn,SimpleXMLRPCServer):
pass
class XMLFunctions(object):
def returnArgs(*args, **kwargs):
return kwargs.items()
You forget the self argument. But this is not the problem. XMLRPC does not
allow passing parameters by name, only positional parameters. See
http://www.xmlrpc.com/spec:
If the procedure call has parameters, the methodCall must contain a
params sub-item. The params sub-item can contain any number of
params, each of which has a value.
Parameters have no name, just a value, so you can only use positional
parameters. But you can simulate keyword arguments by collecting them in a
dictionary and passing that dictionary as an argument instead.
(server side)
def returnArgs(self, x, y, other={}):
return x, y, other
(client side)
print server.returnArgs(xvalue, yvalue, dict(foo=123, bar=234,
baz=345))
--
Gabriel Genellina
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