如何在两个子目录中导入python文件

Question

I have a directory structure as below

 - src\module1\ __init__.py 
 - src\module1\foo1.py 
 - src\module2\ __init__.py
 - src\module2\foo2.py

I want to import functions from foo1.py in foo2.py. I tried importing using

from module1.foo1 import *

but this is throwing traceback error. please suggest how to import foo1.py in foo2.py

Thanks in advance manu

Answer 1

尝试这个

from module1.foo1 import ClassName

Answer 2

From https://docs.python.org/2/tutorial/modules.html

6.1.2. The Module Search Path

When a module named spam is imported, the interpreter first searches for a built-in module with that name. If not found, it then searches for a file named spam.py in a list of directories given by the variable sys.path. sys.path is initialized from these locations:

the directory containing the input script (or the current directory).

PYTHONPATH (a list of directory names, with the same syntax as the shell variable PATH).

the installation-dependent default.

After initialization, Python programs can modify sys.path.

So let's modify sys.path

import sys
sys.path.append('src\module1\')
import foo1

It's worth printing sys.path so you can see why it's not being found already.