memoryerror #24

请问出现这个是什么问题？感谢
python -m opencc -i wiki.zh.text -o wiki.zh.text.jian -c t2s
Traceback (most recent call last):
File "D:\ProgramData\Anaconda3\lib\runpy.py", line 197, in _run_module_as_main
return run_code(code, main_globals, None,
File "D:\ProgramData\Anaconda3\lib\runpy.py", line 87, in run_code
exec(code, run_globals)
File "D:\ProgramData\Anaconda3\lib\site-packages\opencc_main.py", line 41, in
sys.exit(main())
File "D:\ProgramData\Anaconda3\lib\site-packages\opencc_main.py", line 31, in main
input_str = f.read()
File "D:\ProgramData\Anaconda3\lib\codecs.py", line 322, in decode
(result, consumed) = self._buffer_decode(data, self.errors, final)
MemoryError