SyntaxError: Non-ASCII character '\xff' when running C executable using subprocess

Question

我需要运行一个程序，并通过使用 subprocess 模块在 python 脚本中使用它的控制台输出。这是我的代码：

#!/usr/bin/python
# coding=utf-8

from __future__ import unicode_literals
import sys
from subprocess import Popen, PIPE, STDOUT


# Check the code by running linux list command
p = Popen(["ls", "-l"], stdout=PIPE, bufsize=1)

with p.stdout:
    for line in iter(p.stdout.readline, b''):
        print line
p.wait() # wait for the subprocess to exit

# Run the C hello world program
p = Popen([sys.executable, "hello_C"], stdout=PIPE, bufsize=1)

with p.stdout:
    for line in iter(p.stdout.readline, b''):
        print line
p.wait() # wait for the subprocess to exite

"ls -l" 输出显示在 Python 控制台中没有问题。我假设与子进程和读取标准输出相关的代码是正确的。但是当我尝试运行 hello_C 程序时，它只是一个 hello world 程序，它给出了以下错误：

  File "hello_C", line 1
SyntaxError: Non-ASCII character '\xff' in file hello_C on line 2, but no encoding declared; see http://python.org/dev/peps/pep-0263/ for details

Answer 1

sys.executable 是 Python 解释器。 Sys hello_C 是编译好的 C 程序，不是 Python 脚本，你不应该用它来运行程序。直接运行程序即可。

p = Popen(["./hello_C"], stdout=PIPE, bufsize=1)

SyntaxError: Non-ASCII character '\xff' when running C executable using subprocess

SyntaxError: Non-ASCII character '\xff' when running C executable using subprocess

python

ascii

subprocess