Newbie on Python syntax

[rud0lp20]

Hi guys,

Can you suggest a better documentation/site that can help me on syntax?
currently I have this issue where on windows its working but when I tried to run it on linux based I'm getting the syntax issue on this piece of code..

msg = f'| {pbar} {i*b_size}/{seq_len*b_size}| '

Python Version: 3.7.4
Full error:

File "main.py", line 3
msg = f'| {pbar} {i*b_size}/{seq_len*b_size}| '
^
SyntaxError: invalid syntax

TIA