从另一个目录中的另一个文件调用Python函数（需要自己的导入）

Question

以下代码位于目录A的fx.py文件中。我想从dir B中的script.py调用run_bash（＆＃39; ls＆＃39;）。请帮我解决下面的错误。< / p>

这是fx.py

def run_bash(command, communicate=False):
    import subprocess

    print "to bash: "+str(command)
    print "to assign result to variable, set communicate=True"
    if communicate is False:
        process = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE)
        process.wait()
    elif communicate is True:
        (result, err) = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE).communicate()
        process.wait()
        return result
    print process.returncode

这是script.py

import sys
sys.path.insert(0,'/home/.../fx')
from fx import run_bash

run_bash('ls')

这是错误：

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
<ipython-input-7-837e03759b76> in <module>()
      3 from fx import run_bash
      4 
----> 5 run_bash('ls')

/home/rtst_adele/Documents/WonderfulDataSpecialist/fx/fx.py in run_bash(command, communicate)
      7     import subprocess
      8 
----> 9     print "to bash: "+str(command)
     10     print "to assign result to variable, set communicate=True"
     11     if communicate is False:

NameError: global name 'subprocess' is not defined