子进程，Popen在模块中运行命令

Question

i want to call a binary program from within my module. i am having problem with subprocess finding the binary.

so i have

myModule/
-classWrappingBinary.py
-binary_file.out

and in classWrappingBinary.py i have somthing like

sbp.Popen(['./binary_file.out']

which doesnt work. so how can i successfully call the Popen command? i am going to use it by importing the module like,

import myModule
a = myModule.classWrappingBinary.MyClass()

Answer 1

You can look at the variable __file__ and extract the directory information from it. The most reliable way is

name = os.path.join(os.path.dirname(__file__) or  ".", "binary_file.out")
subprocess.Popen(name)