Cannot pass Integer type to CallFunction

[hedongho]

the case is that when i use CallFunction to execute python module functions, and pass int type variable, it occur error like this:

[root@c7dev rootwd]# go build gptest/main.go
[root@c7dev rootwd]# ./main 
panic: runtime error: cgo argument has Go pointer to Go pointer

goroutine 1 [running]:
github.com/sbinet/go-python.(*PyObject).CallFunction.func4(0xd0d510?, {0xc00004cf60?, 0x1, 0x0?}, 0xc00004ce48?, 0xc00004cef8)
        /usr/local/gopath/pkg/mod/github.com/sbinet/go-python@v0.1.0/object.go:377 +0x89
github.com/sbinet/go-python.(*PyObject).CallFunction(0x4ae0f3?, {0xc00004cf60?, 0x1, 0x1})
        /usr/local/gopath/pkg/mod/github.com/sbinet/go-python@v0.1.0/object.go:377 +0x205
main.main()
        /root/rootwd/gptest/main.go:21 +0x66

here is my code:

package main

import (
    "github.com/sbinet/go-python"
)

func init() {
    err := python.Initialize()
    if err != nil {
        panic(err.Error())
    }
}

func main() {
    mod := python.PyImport_ImportModule("tpy.test")
    fobj := mod.GetAttrString("test")
    fobj.CallFunction("aaa") // ok
    fobj.CallFunction(1)     // panic: runtime error: cgo argument has Go pointer to Go pointer
}

python module file:

# tpy.test
def test(data):
    print "xxxx", data

I'm not sure if i use it in a wrong way.