使用Windows 7,Python 3.5.1:
import subprocess
subprocess.check_output(['echo', 'hello'])
引发错误:
Traceback (most recent call last):
File "<pyshell#8>", line 1, in <module>
subprocess.check_output(['echo', 'hello'])
File "D:\Programs\Python 3.5.1\lib\subprocess.py", line 629, in check_output
**kwargs).stdout
File "D:\Programs\Python 3.5.1\lib\subprocess.py", line 696, in run
with Popen(*popenargs, **kwargs) as process:
File "D:\Programs\Python 3.5.1\lib\subprocess.py", line 950, in __init__
restore_signals, start_new_session)
File "D:\Programs\Python 3.5.1\lib\subprocess.py", line 1220, in _execute_child
startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the file specified
所有子进程调用都会发生此错误,例如subprocess.run,subprocess.call和subproccess.Popen。无论使用什么命令,都会发生相同的错误:
subprocess.check_output(['['D:\path\to\exe\program.exe', 'argument'])
FileNotFoundError: [WinError 2] The system cannot find the file specified
据我所知,当命令尝试执行不存在的路径时,通常会发生此错误,但我无法确定在这些情况下会发生的原因。
答案 0 :(得分:1)
您需要包含可执行文件的完整路径。如,
\Yii::$app->formatter->asDate($model->entry_date);
(但不确定它在Windows上的确切位置。)
注意:使用import subprocess
subprocess.check_output(['/bin/echo', 'hello'])
也会使其正常工作,但我不建议以这种方式解决,因为(1)您的shell=True
解决方案实际上会产生副作用(你' ll在运行时隐藏了PATH
的值,并且(2)有security concerns。