If I understand, you want to control your bot wirelessly, using the WASD keys on your computer keyboard.
(Or are you asking about a “Python code development process on the BrickPi with Raspbian For Robots”? )
DI has an example for the GoPiGo3 of a keyboarded robot you could look at:
This is what the keyboarded robot control allows (for the GoPiGo3):
Basic Robot Control Panel
With this program you can test a variety of functions of the GoPiGo3 ranging from built-in LEDs to moving the robot around. The available keys are described when the program is launched.
The script can be launched this way:
The Control Panel
The control panel the user sees when the program is launched can be rendered with formatted-text this way:
Press the following keys to run the features of the GoPiGo3.
To move the motors, make sure you have a fresh set of batteries powering the GoPiGo3.
[key w ] : Move the GoPiGo3 forward
[key s ] : Move the GoPiGo3 backward
[key a ] : Turn the GoPiGo3 to the left
[key d ] : Turn the GoPiGo3 to the right
[key ] : Stop the GoPiGo3 from moving
[key ] : Drive forward for 10 centimeters
[key ] : Drive forward for 10 inches
[key ] : Drive forward for 360 degrees (aka 1 wheel rotation)
[key 1 ] : Turn ON/OFF left blinker of the GoPiGo3
[key 2 ] : Turn ON/OFF right blinker of the GoPiGo3
[key 3 ] : Turn ON/OFF both blinkers of the GoPiGo3
[key 8 ] : Turn ON/OFF left eye of the GoPiGo3
[key 9 ] : Turn ON/OFF right eye of the GoPiGo3
[key 0 ] : Turn ON/OFF both eyes of the GoPiGo3
[key ] : Change the eyes’ color on the go
[key ] : Exit