Question

我正在尝试使用Windows中的python执行如下命令并运行 WindowsError: [Error 2] The system cannot find the file specified错误，目前我的PC上没有script.exe，手动运行它会抛出错误'script.exe' is not recognized as an internal or external command,operable program or batch file.，我希望通过python运行同样的错误，如何修复这个错误？非常感谢任何输入

代码： -

cmd = "script.exe"
print "Executing " + cmd
fetchPipe = subprocess.Popen(cmd.split(' '), stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(output, error) = fetchPipe.communicate()

Answer 1

您必须在以下解决方案之一中进行选择：

传递relative path并在尝试打开文件之前使用os.chdir('folderPath')将当前工作目录设置为包含script.exe的同一文件夹

OR

使用absolute path

script.exe

cmd = os.getcwd() + "\\script.exe"

使用第二种方法，您将拥有：

cmd = os.getcwd() + "\\script.exe"
print "Executing " + cmd
fetchPipe = subprocess.Popen(cmd.split(' '), stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(output, error) = fetchPipe.communicate()

Answer 2

def find_abs_path(executable_fname):
    if os.path.exists(executable_fname): # in case it is in our cwd
        return os.path.abspath(os.path.join(".",executable_fname))
    for dirname in os.environ["PATH"].split(";"): # split dependant on your os
        if executable_fname in os.listdir(dirname):
           return os.path.join(dirname,executable_fname)

应搜索您的路径并找到可执行文件的绝对路径

这是推荐的做法......

... 然而你可以传入一个env

subprocess.Popen(cmd_args,env=os.environ,...)

这应该为运行的子shell提供相同的PATH变量......因此它可能会找到可执行文件......

有没有办法在Windows上的python中运行命令？

2 个答案: