python 从不同级别目录导入找不到模块

Question

python import from different level directory getting import error

Directory structure.

# all __init__.py files are empty



import/
├── helpers
│   ├── __init__.py
│   ├── helper1
│   │   ├── __init__.py
│   │   ├── helper1_module1.py
│   │   └── helper1_module2.py
│   └── helper2
│       ├── __init__.py
│       ├── helper2_module1.py
│       └── helper2_module2.py
└── services
    ├── __init__.py
    ├── service1
    │   ├── __init__.py
    │   └── service1_api.py
    └── service2

helper1_module1.py

class Helper1Module1():
    def function1(self):
        print("executed from Helper1Module1 Class function1")

    def function2(self):
        print("executed from Helper1Module1 Class function2")

service1_api.py

from helpers.helper1.helper1_module1 import Helper1Module1

h = Helper1Module1()
h.function1()

Error:

python3 services/service1/service1_api.py 
Traceback (most recent call last):
  File "services/service1/service1_api.py", line 1, in <module>
    from helpers.helper1.helper1_module1 import Helper1Module1
ModuleNotFoundError: No module named 'helpers'

How to fix this?

Python: python3.6 and above OS: Linux

Answer 1

You have to set the file path (PYTHONPATH) manually to use the files from other directories.

You can export Environment Variable like

export PYTHONPATH='path/to/directory'

Or you can use sys module: Importing files from different folder