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在使用exejs运行js代码的时候发生如下报错，但是在命令行去运行js文件正常：

Exception in thread Thread-1:
Traceback (most recent call last):
  File "C:\ProgramData\Anaconda3\lib\threading.py", line 932, in _bootstrap_inner
    self.run()
  File "C:\ProgramData\Anaconda3\lib\threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "C:\ProgramData\Anaconda3\lib\subprocess.py", line 1370, in _readerthread
    buffer.append(fh.read())
UnicodeDecodeError: 'gbk' codec can't decode byte 0xa6 in position 17: illegal multibyte sequence
Traceback (most recent call last):
  File "xxx.py", line 11, in <module>
    ret = execjs.eval(s)
  File "C:\ProgramData\Anaconda3\lib\site-packages\execjs\__init__.py", line 51, in eval
    return get().eval(source, cwd)
  File "C:\ProgramData\Anaconda3\lib\site-packages\execjs\_abstract_runtime.py", line 25, in eval
    return selfpile('', cwd=cwd).eval(source)
  File "C:\ProgramData\Anaconda3\lib\site-packages\execjs\_abstract_runtime_context.py", line 27, in eval
    return self._eval(source)
  File "C:\ProgramData\Anaconda3\lib\site-packages\execjs\_external_runtime.py", line 78, in _eval
    return self.exec_(code)
  File "C:\ProgramData\Anaconda3\lib\site-packages\execjs\_abstract_runtime_context.py", line 18, in exec_
    return self._exec_(source)
  File "C:\ProgramData\Anaconda3\lib\site-packages\execjs\_external_runtime.py", line 87, in _exec_
    output = self._exec_with_pipe(source)
  File "C:\ProgramData\Anaconda3\lib\site-packages\execjs\_external_runtime.py", line 103, in _exec_with_pipe
    stdoutdata, stderrdata = pmunicate(input=input)
  File "C:\ProgramData\Anaconda3\lib\subprocess.py", line 1028, in communicate
    stdout, stderr = self._communicate(input, endtime, timeout)
  File "C:\ProgramData\Anaconda3\lib\subprocess.py", line 1420, in _communicate
    stdout = stdout[0]
IndexError: list index out of range

解决方式：

搜索界面通过管理员身份运行powershell

切换到解释器的路径下cd C:\ProgramData\Anaconda3\Lib

编辑subprocess.py文件notepad .\subprocess.py

将subprocess.py中的class Popen类初始化的encoding=None修改为encoding='utf-8'

再次运行代码正常

本文标签： CodecDecodebyte踩坑记UnicodeDecodeError

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