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I'm trying to add audio output for Tensorflow object detection on the raspberry pi. For example, if it detects a person from the picamera, I'm trying to get the program to say "person". When I use the code below, I get the error message "TypeError: expected str(string), bytes or os". This is likely because I'm assigning the wrong value to speech. What is the right variable/value for the object label?

from subprocess import call 

...

speech = classes  
call(["espeak", speech)]
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    Not Pi specific. It seems to be a general Python question. – joan Dec 23 '19 at 9:40

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