Python不能执行终端脚本，使用SH也不庆典 [英] Python can't execute terminal script, using sh nor bash
问题描述
我希望你们能帮助我解决这个问题，因为我真的卡住了......我试图从执行的python程序，并出于某种原因，这是行不通的。该脚本位于：
i hope you guys can help me with this problem because i'm really stuck... I'm trying to execute a program from python and, for some reason, it doesn't work. The script is located at:
path/to/teqc
我已经添加了此行的.bashrc文件：
I've added this line to the .bashrc file:
alias teqc='path/to/teqc'
和，当我运行
TEQC -tr D输入＆GT;输出
在终端上正常工作......但是，如果我在一个Python程序运行它，它表明：
on a terminal it works fine... but, if i run it on a python program, it shows:
sh: teqc: command not found
在code我一直在使用Python的是：
the code i've been using on python is:
os.system('teqc -tr d input >output')
我试图用
subprocess.Popen('teqc -tr d input >output', shell=True, executable="/bin/bash")
，但唯一的结果是改变错误消息
but the only result was to change the error message to
/bin/bash: teqc: command not found
任何帮助将是非常美联社preciated：）
Any help would be really appreciated :)
Pd积。我忘了指定，操作系统是Fedora的21
P.D. I forgot to specify, the operating system is Fedora 21
推荐答案
我认为这个问题是环境变量PATH是不一样的，当你使用子在code运行命令。
I think the problem is that the environment variable PATH is not the same when you run the command in the code using subprocess.
- 一个解决办法是有作为在previous答案提出的软链接
-
您可以做其他的事情是让你的code你使用的子os模块来已可用于追加使用类似的路径os.environ字典执行命令之前，设置环境这种
- One solution would be to have a soft link in as suggested in the previous answer
Other thing you can do is to have your code set the environment before you execute your command using subprocess the os module comes has a os.environ dictionary which can be used to append the path using something like this
import os
import subprocess
os.environ['PATH'] += ":/path/to/teqc"
subprocess.Popen(['teqc -tr d input'],stdout=subprocess.PIPE,stderr=subprocess.PIPE,shell=True)
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