File "<string>", line 1, in <module>
File "xx/anaconda/lib/python3.7/multiprocessing/spawn.py", line 105, in spawn_main
exitcode = _main(fd)
File "xx/anaconda/lib/python3.7/multiprocessing/spawn.py", line 115, in _main
self = reduction.pickle.load(from_parent)
_pickle.UnpicklingError: pickle data was truncated

解决办法： 这个错误的原因大概率是文件有损坏，尝试生成新的文件。