AWS reading utf-8 file pycaption.detect_format returns None

Question

Python version: 3.5-slim-buster Module: pycaption

When reading caption.srt that is us-ascii encoded from s3 bucket:

obj.get()['Body'].read()
print(pycaption.detect_format(body.decode()))

I get a desired response

<class 'pycaption.srt.SRTReader'> 

But when reading utf-8 encoded s3.srt file

pycaption can't detect format response:

None

I have tried:

obj.get()['Body'].read().decode('utf-8')

print(pycaption.detect_format(body))

But with no luck

Answer 1

In the end the issue was in DOS newlines CR/LF that I converted to DOS newlines CR/LF.