Python 导入错误 - 运行单元测试

Question

为什么我在项目中遇到模块导入错误。所有包都在项目下，它们都有 __init __.py 并且其他脚本不会给出相同的错误。 Python版本是3.6。代码是在Unix环境下编写的。

这是我收到的导入错误。我正在尝试在这里运行测试。

Ran 1 test in 0.001s

FAILED (errors=1)

Error
Traceback (most recent call last):
  File "/usr/lib/python3.6/unittest/case.py", line 59, in testPartExecutor
    yield
  File "/usr/lib/python3.6/unittest/case.py", line 605, in run
    testMethod()
  File "/usr/lib/python3.6/unittest/loader.py", line 34, in testFailure
    raise self._exception
ImportError: Failed to import test module: test_SMSHandler
Traceback (most recent call last):
  File "/usr/lib/python3.6/unittest/loader.py", line 153, in loadTestsFromName
    module = __import__(module_name)
  File "/home/sevvalboylu/server/app/api/test_SMSHandler.py", line 11, in <module>
    from middleware.services import Sender
ModuleNotFoundError: No module named 'middleware'

Answer 1

看起来您在 PYTHONPATH 中缺少项目的根路径

来自文档 ( Modules - The Module Source 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 when no file is specified).
• PYTHONPATH (a list of directory names, with the same syntax as the shell variable PATH).
• The installation-dependent default.

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