tensorflow2

finrl.test() return a list of int of portfolio value, it doesn't contain date data:

from finrl.test import test
account_value_sb3=test(start_date = '2021-10-18', 
                      end_date = '2021-10-19',
...
                      net_dimension = 512)
account_value_sb3

output: 
[1000000.0,
 999698.6172275314,
 999391.9308182714,
...

But portfolio analysis tool(like

with video_demo.py about 20% speed compared to your 1.0 repo. but thanks much for sharing!

Bug description

While testing #933 i have seen some errors (empty crops / non utf-8 strings / and so on)
We need to filter some invalid files/annotations

• ensure all ready to use datasets works fine with eval_detection eval_recognition scripts (TF and PT)
• unify recognition part with recognition dataset / word generator to return string directly instead of {labels: ['string