诗意：用python>=2.7解析依赖项

Question

我有一个基于Python2.7和Python3.9的项目

我正在使用以下pyproject.toml：

[build-system]
requires = ["poetry_core>=1.1.4"]
build-backend = "poetry.core.masonry.api"

[tool.poetry]
name = "MyProject"
version = "1.0.0"
description = ""
authors = [""]
readme = ""
repository = ""
homepage = ""

[tool.poetry.dependencies]
python = ">=2.7"
bcrypt = "*"
pywin32 = [
    {version = "228", python = "^2.7"},
    {version = "300", python = "^3.0"}, 
]

当执行poetry update时，进程将永远停留在"Resolving dependencies..."

如果我用python = "^2.7"替换python依赖项，它可以工作（但不能安装在python 3上），如果我用python = "^3.0"替换它，它也可以工作（但不能安装在python 2上）

我该怎么办