从os.system开始时，chrome无法打开完整的URL（py） [英] chromium not opening full URL when started with os.system (py)

问题描述

我试图用os.system在Chrome中打开一个URL，将GET参数传递给php页面。但是，铬似乎不接受或识别不止一个参数。

I tried to open a url in chromium with os.system, passing GET arguments to the php page. However it seems that chromium doesn't accept or recognize more than one argument.

url = "chromium-browser localhost/index.php?temp=" + str(int(math.floor(get_temperature()))) + "&id=" + get_id()
print(url)
os.system(url)

正在打印的字符串：
Chrome浏览器localhost / index.php？temp = 15& id = 10

String being printed: chromium-browser localhost/index.php?temp=15&id=10

正在打开URL：
http：//localhost/index.php？temp = 15

使用引号将URL包裹即可解决此问题。

Wrapping the URL in quotes solved the issue.

推荐答案

您正在传递命令到子壳。 &符号在Unix shell中有特殊含义。它将放在前面的命令中背景。

You're passing a command to a subshell. The ampersand has a special meaning to a Unix shell; it puts the preceding command in the background.

如果要从命令行运行此命令，则完全忽略Python：

Ignoring Python completely, if you were to run this from the command line:

chromium-browser localhost/index.php?temp=15&id=10

...您会发现它将执行以下命令：

...you'd find that it would execute the command:

chromium-browser localhost/index.php?temp=15

...在后台，然后尝试执行以下命令：

...in the background, and then attempt to execute the command:

id=10

在前台。最后一条可能会失败，因为它不是有效的命令，但是第一个命令会成功。

in the foreground. That last bit would likely fail, as it's not a valid command, but the first command would succeed.

要解决此问题，您需要使用&符号；最好的方法可能只是包装要用引号引起来的整个URL：

To solve the problem, you need to escape the ampersand; the best way to do this is probably just to wrap the whole URL you're passing in quotes:

chromium-browser "localhost/index.php?temp=15&id=10"

所以也许类似的方法比较合适：

So perhaps something like this would be appropriate:

command_line='chromium-browser "http://localhost/index.php?temp={0}&id={1}"'
os.system(command_line.format(math.floor(get_temperature()), get_id()))

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