Compare unicode to str Python3

Question

I am working on a project in which i am getting data from an arduino over serial communication. So i open a ser = serial.Serial('/dev/ttyACM1', 9600) and everything is working fine. The thing is that i wrote this code to check when the data i get is 0 but i can't get it work.

while True:
            try :
                a = ser.readline()

                # i do that because the input stream is smthg like b' 16.894548\r\n'
                data = a.decode('utf-8') 

                print(a is str(str(0).encode('utf-8').decode('utf-8', "strict")))

I have tried many things, like getting the sizeof, encode and decode, making everything a str after decoding. But still no luck. Any ideas?

score 2 · Accepted Answer · answered Nov 29 '18 at 14:12

2

Use == to compare strings, not is
Note that you have new line characters in the end. '0' != '0/r/n'.

Try
```
a = ser.readline()
print(a.decode().strip() == '0')
```

answered Nov 29 '18 at 14:12

DeepSpace

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Yeap! That is the solution. That helped me a lot. Thank you again! – Ioan Kats Nov 30 '18 at 14:51

Compare unicode to str Python3

1 Answers1