在子过程模块中使用的特殊字符
在Python的子过程中，
subprocess.Popen(
(
"git",
"add",
"-A",
"&&",
"git",
"commit",
"-m",
commit_message
),
cwd=path,
)
不起作用。 但是，如果我将其分成
subprocess.Popen(( "git", "add","-A") , cwd=path)
且
subprocess.Popen(( "git", "commit","-m" , "yeah") , cwd=path)
有效。我如何插入”＆amp; amp;''在中间？谢谢。
In subprocess module in python,
subprocess.Popen(
(
"git",
"add",
"-A",
"&&",
"git",
"commit",
"-m",
commit_message
),
cwd=path,
)
does not work.
However if I split it into
subprocess.Popen(( "git", "add","-A") , cwd=path)
and
subprocess.Popen(( "git", "commit","-m" , "yeah") , cwd=path)
it works. How do I insert "&&" in the middle? Thanks.
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＆amp;＆amp;逻辑运算符是Shell（例如，bash）理解的东西。但是，您正在执行Git，这不了解＆amp;＆amp;的意思。换句话说，您正在输入参数，就好像您将它们输入到终端一样。subprocess.popen默认情况下不会调用shell，而是用指定的参数调用exec系统调用。因此，您告诉它运行git带有参数add，-a（到目前为止，很好），＆amp ;＆amp;（git不了解这一点），git，-m和是的。要执行此操作为shell命令，您需要将
shell = true添加到subprocess.popen。这样做后，您可以将想要的命令输入单个字符串：The
&&logical operator is something that the shell (e.g., bash) understands. However, you're executing git which doesn't understand what&&means. Explained another way, you're entering the arguments as if you were typing them into a terminal.subprocess.Popendoesn't invoke the shell by default and instead invokes theexecsystem call with the specified arguments. So, you're telling it to rungitwith the argumentsadd,-A(so far, so good),&&(git doesn't understand this),git,-m, andyeah.To execute this as a shell command, you need to add
shell=Truetosubprocess.Popen. Once you do that, you can just type out the command you want as a single string:只有外壳才能Interpet
＆amp;＆amp;，它不是程序或参数，您可以将
shell = truesubprocess.popen.popen 运行您的运行在迷你壳中的命令中，请参见在这里文档Only a shell can interpet
&&, it's not program or an argumentYou can pass
shell=Truetosubprocess.Popento run your command in a mini-shell like environment, see docs here