通过Python运行Windows CMD命令

Question

我想为大型目录结构中的所有文件创建一个带符号链接的文件夹.我subprocess.call(["cmd", "/C", "mklink", linkname, filename])首先使用它,它工作,但为每个符号链接打开一个新的命令窗口.

我无法弄清楚如何在没有窗口弹出的情况下在后台运行命令,所以我现在试图保持一个CMD窗口打开并通过stdin运行命令:

def makelink(fullname, targetfolder, cmdprocess):
    linkname = os.path.join(targetfolder, re.sub(r"[\/\\\:\*\?\"\<\>\|]", "-", fullname))
    if not os.path.exists(linkname):
        try:
            os.remove(linkname)
            print("Invalid symlink removed:", linkname)
        except: pass
    if not os.path.exists(linkname):
        cmdprocess.stdin.write("mklink " + linkname + " " + fullname + "\r\n")

哪里

cmdprocess = subprocess.Popen("cmd",
                              stdin  = subprocess.PIPE,
                              stdout = subprocess.PIPE,
                              stderr = subprocess.PIPE)

但是,我现在收到此错误:

File "mypythonfile.py", line 181, in makelink
cmdprocess.stdin.write("mklink " + linkname + " " + fullname + "\r\n")
TypeError: 'str' does not support the buffer interface

这是什么意思,我该如何解决这个问题？

Answer 1

Python 字符串是 Unicode，但您要写入的管道仅支持字节。尝试：

cmdprocess.stdin.write(("mklink " + linkname + " " + fullname + "\r\n").encode("utf-8"))