Python and Arduino serial communication. 

Verify the serial port of your Arduino once. It should be same in both the Arduino and python program. The python code which I have provided in the video description is for python 2.7 if you are using python 3 there are some small changes in the program. I will update that code as well, you can have a look at it. If are not able to do it comment down I will surely help you out.

@@YahiyaMulla sir I have changed my port number and I knew that it was not going to work on python 3 so I installed python 2.7.18 but it still does not works It only works when I give input from Arduino IDE (serial monitor)

@@ganeshsharma24894 I have updated the code for python 3 if you have python 3 installed on your system then try it out. To upload your code to the Arduino and also to use Serial Monitor, Serial communication is the must. Try avoiding Serial.print() function in your Arduino program. Instead use python to interact with the user. If you still face the problem then email me both the codes at yahiya6006@gmail.com I will try it out.

My code didnt work as well. It is because the .write function has to look like this: .write(b'1')