在 ST3 中使用 Popen 的奇怪输出

Question

我正在为 Sublime text 开发一个插件，由于 python 在那个环境中的一些限制，我试图用 Popen 得到一个 json 答案，我正确地收到了数据，但是似乎 Popen 在输出中添加了一些奇怪的字符。

这是输出

(b'{"trink": {"id": "12"}}\r\n')

但应该是

{"trink": {"id": "12"}}

我是这样打电话的：

process = subprocess.Popen(command, stdin=subprocess.PIPE, stdout=subprocess.PIPE,shell=True)
output = process.communicate()
print(output)

有

output = process.communicate()[0]

仅从原始输出中消失 ()

如何获得干净的输出？

我使用的是 Sublime text 3 Build 3083 Windows10-64b

Answer 1

ST论坛有用户回答我：

For starters, this is 100% a Python issue and has nothing to do with Sublime Text. It's also not a limitation but a feature. Literally.

Firstly, communicate returns a tuple with (stdout_data, stderr_data). You most likely only need the stdout part, so you slice that tuple with [0].

Secondly, the data that communicate returns is, by default, a set of bytes. Look that up if you want. Bytes are represented with the b in front of a literal string and can be converted to real strings using the .decode() method on it, with a parameter for the charset. This could be utf-8 or cp1252 or just the result of locale.getpreferredencoding(). If you used Popen with the universal_newlines=True argument, Python would do that conversion for you automatically.

And finally, the string you have until now has a new line appended at the end, because that's how whatever tool you are using made its output. You have to strip it with .strip(), if it's a problem (since it's json, most likely not).

So what do we get now?
process = subprocess.Popen(command, stdin=subprocess.PIPE, stdout=subprocess.PIPE, shell=True, universal_newlines=True)
output = process.communicate()[0]#.strip()
print(output)

在 ST3 中使用 Popen 的奇怪输出

Weird ouput using Popen in ST3

python

plugins

popen

sublimetext3