Traceback (most recent call last):


 "<stdin>", line 1, in <module>


 "/usr/local/lib/python3.4/site-packages/sqlalchemy/__init__.py", line 8, in <module>

from . import util as _util
# noqa


 "/usr/local/lib/python3.4/site-packages/sqlalchemy/util/__init__.py", line 14, in <module>

from ._collections import coerce_generator_arg
# noqa


 "/usr/local/lib/python3.4/site-packages/sqlalchemy/util/_collections.py", line 16, in <module>

from .compat import binary_types


 "/usr/local/lib/python3.4/site-packages/sqlalchemy/util/compat.py", line 189, in <module>

from typing import TYPE_CHECKING
ImportError: No module named 'typing'

Traceback (most recent call last):


 "tools/infer_rec.py", line 40, in <module>

from ppocr.data.reader_main import test_reader
ImportError: cannot import name 'test_reader' from 'ppocr.data.reader_main' (/home/aistudio/ppocr/data/reader_main.py)