pip install Twister 抛出很长的错误

Question

我正在尝试按照使用 Django 频道的项目的在线教程进行操作。尝试安装 requirements.txt 导致在尝试安装 Twisted==16.4.0 时出现错误，因此我只尝试 pip install Twisted 以查看最新版本是否导致相同的错误。

确实如此。我不确定到底是什么问题，我运行在尝试为 flask-socketio 项目安装 greenlet 时遇到了一个非常相似的问题，这让我放弃并尝试 django 频道。这很令人沮丧。

我是在虚拟环境中做的，我想我的 visual studio C++ 东西可能有问题？我真的无法从这个错误中看出任何东西，看看它有多长，我真的很陌生。

这是错误：

    iocpsupport.c
    src/twisted/internet/iocpreactor/iocpsupport/iocpsupport.c(2229): warning C4047: '=': '__pyx_t_11iocpsupport_HANDLE' differs in levels of indirection from 'HANDLE'
    src/twisted/internet/iocpreactor/iocpsupport/iocpsupport.c(2377): warning C4022: 'CreateIoCompletionPort': pointer mismatch for actual parameter 1
    src/twisted/internet/iocpreactor/iocpsupport/iocpsupport.c(2377): warning C4022: 'CreateIoCompletionPort': pointer mismatch for actual parameter 2
    src/twisted/internet/iocpreactor/iocpsupport/iocpsupport.c(2377): warning C4047: '=': '__pyx_t_11iocpsupport_HANDLE' differs in levels of indirection from 'HANDLE'
    src/twisted/internet/iocpreactor/iocpsupport/iocpsupport.c(2492): warning C4022: 'GetQueuedCompletionStatus': pointer mismatch for actual parameter 1
    src/twisted/internet/iocpreactor/iocpsupport/iocpsupport.c(2838): warning C4022: 'PostQueuedCompletionStatus': pointer mismatch for actual parameter 1
    src/twisted/internet/iocpreactor/iocpsupport/iocpsupport.c(2949): warning C4022: 'CloseHandle': pointer mismatch for actual parameter 1
    src/twisted/internet/iocpreactor/iocpsupport/iocpsupport.c(3292): warning C4996: 'PyObject_AsReadBuffer': deprecated in 3.0
    src/twisted/internet/iocpreactor/iocpsupport/iocpsupport.c(4932): warning C4996: 'PyObject_AsWriteBuffer': deprecated in 3.0
    src/twisted/internet/iocpreactor/iocpsupport/iocpsupport.c(5149): warning C4996: 'PyObject_AsReadBuffer': deprecated in 3.0
    src/twisted/internet/iocpreactor/iocpsupport/iocpsupport.c(5786): warning C4996: 'PyObject_AsWriteBuffer': deprecated in 3.0
    src/twisted/internet/iocpreactor/iocpsupport/iocpsupport.c(6146): warning C4996: 'PyObject_AsWriteBuffer': deprecated in 3.0
    src/twisted/internet/iocpreactor/iocpsupport/iocpsupport.c(6164): warning C4996: 'PyObject_AsWriteBuffer': deprecated in 3.0
    src/twisted/internet/iocpreactor/iocpsupport/iocpsupport.c(6182): warning C4996: 'PyObject_AsWriteBuffer': deprecated in 3.0
    src/twisted/internet/iocpreactor/iocpsupport/iocpsupport.c(6509): warning C4996: 'PyObject_AsReadBuffer': deprecated in 3.0
    src/twisted/internet/iocpreactor/iocpsupport/iocpsupport.c(7614): error C2039: 'tp_print': is not a member of '_typeobject'
    C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.9_3.9.496.0_x64__qbz5n2kfra8p0\include\cpython/object.h(193): note: see declaration of '_typeobject'
    src/twisted/internet/iocpreactor/iocpsupport/iocpsupport.c(8421): warning C4996: '_PyUnicode_get_wstr_length': deprecated in 3.3
    src/twisted/internet/iocpreactor/iocpsupport/iocpsupport.c(8437): warning C4996: '_PyUnicode_get_wstr_length': deprecated in 3.3
    error: command 'C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.28.29333\bin\HostX86\x64\cl.exe' failed with exit code 2

(完整输出https://pastebin.com/HwmPLVTK)

Answer 1

原谅你没有在所有这些麻烦中发现实际错误，但就是这样：

src/twisted/internet/iocpreactor/iocpsupport/iocpsupport.c(7614):
    error C2039: 'tp_print': is not a member of '_typeobject'

这会导致 this question，这表明您需要将 Python 从 3.9 降级到 3.8，或者如果已发布 3.9 兼容版本则升级 Twisted。

在撰写本文时 (2021-02-13)，ticket #10075 reporting this same error (albeit in French) is still open, so I don't think the latest version of Twisted supports Python 3.9 yet. The corresponding milestone 也未完成，这是目前唯一未解决的问题。

pip install Twister 抛出很长的错误

pip install Twister throws really long error

python

twisted