Using subprocess for socat in Python

I am trying to use the subprocess to execute a command socat . It just echos the command as 'show stat | socat unix-connect:/users/viperias/Applications/haproxy.stat stdio' 'show stat | socat unix-connect:/users/viperias/Applications/haproxy.stat stdio' rather than printing the output of the command. It perfectly works for the other commands. Am I missing something?

    def main():
        cmd = "echo show stat | socat unix-connect:/users/viperias/Applications/haproxy.stat stdio"
        ps = subprocess.Popen(cmd,shell=True,stdout=subprocess.PIPE,stderr=subprocess.STDOUT)
        output = ps.communicate()[0]
        print (output)
    main()

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