Fix getch test sample for Python 3
Fix getch test sample for Python 3

Wakeupbuddy/pexpect,Wakeupbuddy/pexpect,Wakeupbuddy/pexpect,nodish/pexpect,Depado/pexpect,dongguangming/pexpect,blink1073/pexpect,Depado/pexpect,quatanium/pexpect,crdoconnor/pexpect,dongguangming/pexpect,dongguangming/pexpect,dongguangming/pexpect,blink1073/pexpect,bangi123/pexpect,crdoconnor/pexpect,blink1073/pexpect,nodish/pexpect,Depado/pexpect,quatanium/pexpect,bangi123/pexpect,bangi123/pexpect,bangi123/pexpect,quatanium/pexpect,nodish/pexpect,Depado/pexpect,Wakeupbuddy/pexpect,crdoconnor/pexpect