It would help a bit if the article included at least roughly equivalent Go code next to the Python code. The Go code is wordier, but maybe it takes less time to write because it doesn't require as many decisions (libraries etc.) as with Python.

        package main;

        import (
                "fmt"
                "net"
        )

        func main() {
                hosts := []string { "www.google.com", "www.example.com", "www.python.org" }
                c := make(chan string)
                for _, h := range(hosts) {
                        go get_ip(h, c)
                }
                for i := 0; i < 3; i++ {
                        fmt.Println(<-c)
                }
        }

        func get_ip(host string, c chan string) {
                addrs, err := net.LookupHost(host)
                if err != nil {
                        fmt.Println("Host not found:", host)
                        c <- host + ": <error>"
                        return
                }
                c <- host + ": " + addrs[0]
        }