我重新安装了Windows，并打开了一个现有的Pycharm项目，并在“设置”>“项目解释器”中收到错误“ SDK似乎无效”。

项目解释器路径指向venv中的python：

MyProject\venv\Scripts\python.exe

我尝试重新添加python.exe：

多数民众赞成在我收到错误时：

更新：这是idea.log的错误，有关虚拟环境的许多其他问题似乎与Windows环境变量和系统路径有关：

2018-09-28 19:50:40,275 [ 17601] INFO - hon.packaging.PyPIPackageCache - Loaded 153296 packages from C:\Users\Matt\.PyCharm2018.2\system\python_packages\pypi-cache.json

2018-09-28 19:50:40,816 [ 18142] INFO - rains.python.sdk.PythonSdkType - Fatal Python error: Py_Initialize: unable to load the file system codec

ModuleNotFoundError: No module named 'encodings'

Current thread 0x00000fa8 (most recent call first):

Exit code -1073740791

2018-09-28 19:50:40,816 [ 18142] ERROR - ns.python.sdk.PythonSdkUpdater - Failed to determine Python's sys.path value:

STDOUT:

STDERR: Fatal Python error: Py_Initialize: unable to load the file system codec

ModuleNotFoundError: No module named 'encodings'

Current thread 0x00000fa8 (most recent call first):

com.jetbrains.python.sdk.InvalidSdkException: Failed to determine Python's sys.path value:

STDOUT:

STDERR: Fatal Python error: Py_Initialize: unable to load the file system codec

ModuleNotFoundError: No module named 'encodings'