FileNotFoundError: [WinError 2] 系统找不到指定的文件。 解决方案

用Idle运行Python脚本的时候发现如下错误：

Traceback (most recent call last):
File "C:UsersDangKaiDesktoppythonUI-unittest-seleniumvenvlibsite-packagesseleniumwebdrivercommonservice.py", line 76, in start
stdin=PIPE)
File "D:SoftwarePython37libsubprocess.py", line 756, in init
restore_signals, start_new_session)
File "D:SoftwarePython37libsubprocess.py", line 1155, in _execute_child
startupinfo)
FileNotFoundError: [WinError 2] 系统找不到指定的文件。

后来在stackoverflow上找到如下解决办法：

In Windows , to use echo in subprocess, you would need to use shell=True . This is because echo is not a separate executable, but rather a built-in command for the windows command line. Example - 在windows 在子进程中使用echo，需要设置 shell =True，因为 echo 不是单独的命令，而是window CMD 内置的命令

process1 = subprocess.Popen(command1,stdout=subprocess.PIPE,shell=True)
Also, please do note, you should only use shell=True when absolutely necessary (as in this case , to use echo in windows in subprocess).

并且，需要注意，只有在绝对需要的情况下才使用shell=True

找到 subprocess.py脚本，将对应行加上shell=true 参数