从python中的不同包导入文件时出现相对导入错误

Question

I created the following directory structure.

package1/
   __init__.py
   file1.py
   file2.py
package2/
   __init__.py
   utils.py

I have to import utils.py from package2 at file2.py in package1. I tried using

from .package2 import utils

but got error

ModuleNotFoundError: No module named '__main__.package2'; '__main__' is not a package 

Answer 1

In file2 you can add the root directory of package1 and package2 to your path:

import os, sys
this_dir, _ = os.path.split(__file__)
root_dir = os.path.dirname(this_dir)
sys.path.append(root_dir)

Then import:

from package2 import utils