ModuleNotFoundError：Python 3.6在Python 3.5中找不到模块 [英] ModuleNotFoundError: Python 3.6 does not find modules while Python 3.5 does

问题描述

我想将我的python版本从3.5升级到3.6。由于我使用的是 WinPython ，我已经下载并安装了最新版本，就像我之前使用的版本一样3.5。

I wanted to upgrade my python version from 3.5 to 3.6. Since I am using WinPython, I have downloaded and installed the recent version just as I did it before with version 3.5.

但是，如果我使用版本3.6，每当我导入自创模块时，我都会得到 ModuleNotFoundError 。一个最小的例子：我创建了一个文件 t1.py ，它只包含一个 pass 语句和一个文件 t2.py 包含以下代码：

However, if I use version 3.6 I get a ModuleNotFoundError whenever I import a self-created module. A minimal example: I created a file t1.py that contains only a pass statement and a file t2.py containing the following code:

import t1
print("done")

两个文件都在同一个文件夹中 D：\ MyProject \src 。现在当我使用python 3.5运行文件时，一切正常：

Both files are in the same folder D:\MyProject\src. Now when I run the file with python 3.5, everything works fine:

'C:\Program Files\WinPython-64bit-3.5.1.2\python-3.5.1.amd64\python.exe' D:\MyProject\src\t2.py
done

然而，使用python 3.6我得到

However, with python 3.6 I get

'C:\Program Files\WinPython-64bit-3.6.0.1Qt5\python-3.6.0.amd64\python.exe' D:\MyProject\src\t2.py
Traceback (most recent call last):
  File "D:\MyProject\src\t2.py", line 6, in <module>
    import t1
ModuleNotFoundError: No module named 't1'

我跑了出来问题可能是什么，并会欣赏新的灵感。

I ran out of ideas what the issue could be and would appreciate new inspiration.

推荐答案

这会有用吗？ in t2.py

Would this work ? in t2.py

import os
__path__=[os.path.dirname(os.path.abspath(__file__))]
from . import t1
print("t2 done")

Python-3.6改变了它的工作方式，使用python.exe旁边的python._pth文件（而不是以前版本中的pyvenv.cfg）

Python-3.6 changes its way of working, with the "python._pth" file next to python.exe (instead of "pyvenv.cfg" in previous versions)

如果你不想修改你的source，那么你必须在Python._pth文件中添加D：\ MyProject \ src行，或者从python._pth位置添加它的相对路径。在我的例子中，它适用于：

If you don't want to modify your source, then you have to add "D:\MyProject\src" line in Python._pth file, or a relative path to it from python._pth location. in my example, it works with:

python36.zip
DLLs
Lib
.
..\test
import site

http：// bugs.python.org/issue29578?@ok_message=msg%20287921%20created%0Aissue%2029578%20message_count%2C%20messages%20edited%20ok&@template=item

如果你没有系统安装的python，其他更简单的解决方案：将python._pth文件重命名为python.exe旁边的pythonzz._pth

Other, simpler solution if you have no system-installed python: rename the "python._pth" file, next to "python.exe", as "pythonzz._pth"

PythonWindows维护者刚刚写道，使用Python-3.6.0也可以使用更简单的解决方案。

The Python "Windows" maintainer just wrote that the simpler solution should be ok also with Python-3.6.0.

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