诗歌安装 | SolverProblemError Because my_project depends on string (*) which doesn't match any versions, 版本解析失败

Question

我还没有用诗歌来运行项目，所以请原谅缺乏理解。

我成功安装了诗歌python图书馆管理器，使用：

curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/get-poetry.py | python3

下一步 poetry install 最初返回此错误：

me@LAPTOP-G1DAPU88:~/.ssh/workers-python/workers$ poetry install

  RuntimeError

  Poetry could not find a pyproject.toml file in /home/me/.ssh/workers-python/workers or its parents

  at ~/.poetry/lib/poetry/_vendor/py3.8/poetry/core/factory.py:369 in locate
      365│             if poetry_file.exists():
      366│                 return poetry_file
      367│
      368│         else:
    → 369│             raise RuntimeError(
      370│                 "Poetry could not find a pyproject.toml file in {} or its parents".format(
      371│                     cwd
      372│                 )
      373│             )

我很快意识到我需要自己制作的 pyproject.toml 文件。运行 poetry install 再次产生：

$ poetry install

  TOMLError

  Invalid TOML file /home/me/.ssh/workers-python/workers/pyproject.toml: Key "json " already exists.

  at ~/.poetry/lib/poetry/_vendor/py3.8/poetry/core/toml/file.py:34 in read
      30│     def read(self):  # type: () -> "TOMLDocument"
      31│         try:
      32│             return super(TOMLFile, self).read()
      33│         except (ValueError, TOMLKitError) as e:
    → 34│             raise TOMLError("Invalid TOML file {}: {}".format(self.path.as_posix(), e))
      35│
      36│     def __getattr__(self, item):  # type: (str) -> Any
      37│         return getattr(self.__path, item)
      38│

以上错误表示存在重复条目。

运行 poetry install 再次使用现在更新的 cwd 中的 pyproject.toml 文件抛出此错误（在 post 的标题中）：

$ poetry install
Creating virtualenv my_project-1_EUeV5I-py3.8 in /home/me/.cache/pypoetry/virtualenvs
Updating dependencies
Resolving dependencies... (28.4s)

  SolverProblemError

  Because my_project depends on string (*) which doesn't match any versions, version solving failed.

  at ~/.poetry/lib/poetry/puzzle/solver.py:241 in _solve
      237│             packages = result.packages
      238│         except OverrideNeeded as e:
      239│             return self.solve_in_compatibility_mode(e.overrides, use_latest=use_latest)
      240│         except SolveFailure as e:
    → 241│             raise SolverProblemError(e)
      242│
      243│         results = dict(
      244│             depth_first_search(
      245│                 PackageNode(self._package, packages), aggregate_package_nodes

但是，暂时删除所有实例 = "*" 给了我 line 12 上的 \n 错误...似乎不存在：

$ poetry install

  TOMLError

  Invalid TOML file /home/me/.ssh/workers-python/workers/pyproject.toml: Unexpected character: '\n' at line 12 col 5

  at ~/.poetry/lib/poetry/_vendor/py3.8/poetry/core/toml/file.py:34 in read
      30│     def read(self):  # type: () -> "TOMLDocument"
      31│         try:
      32│             return super(TOMLFile, self).read()
      33│         except (ValueError, TOMLKitError) as e:
    → 34│             raise TOMLError("Invalid TOML file {}: {}".format(self.path.as_posix(), e))
      35│
      36│     def __getattr__(self, item):  # type: (str) -> Any
      37│         return getattr(self.__path, item)
      38│
me@LAPTOP-G1DAPU88:~/.ssh/workers-python/workers$ cat pyproject.toml
[tool.poetry]
name = "my_project"
version = "0.1.0"
description = "Top-level package for my_project."
authors = [""]
packages = [
    { include = "my_project"},
]

[tool.poetry.dependencies]
python = "^3.8"
click  # Suspect line

我已经恢复了这个。

当前 pyproject.toml:

[tool.poetry]
name = "data_simulator"
version = "0.1.0"
description = "Top-level package for data_simulator."
authors = ["iotahoe <iotahoe@iotahoe.com>"] # daniel.bell@hitachivantara.com / daniel@iotahoe.com
packages = [
    { include = "data_simulator"},
]

[tool.poetry.dependencies]
python = "^3.8"
click = "*"
#logging = "*"
#os = "*"
#pathlib = "*"
#time = "*"
numpy = "*"
pandas = "*"
#json = "*"
#random = "*"
faker = "*"
transformers = "4.4.2"
#re = "*"
#itertools = "*"
#datetime = "*"
#requests = "*"
#copy = "*"
#collections = "*"
#collections.abc = "*"
#multiprocessing = "*"
#multiprocessing.dummy = "*"
nltk = "*"
#nltk.corpus = "*"
#string = "*"

[tool.poetry.dev-dependencies]
isort = "5.6.4"
black = "^20.8b1"
invoke = "^1.4.1"
coveralls = "^2.2.0"
pytest = "^3.0"
flake8 = "^3.8.3"
mypy = "^0.782"

[[tool.poetry.source]]
name = "azure"
url = "https://pkgs.dev.azure.com/iotahoe/Halo/_packaging/private-sources/pypi/simple/"
secondary = true

[build-system]
requires = ["poetry>=0.12"]
build-backend = "poetry.masonry.api"

注意：'name'、'authors'、'include'、'url' 已被删减。

Answer 1

作为一般建议，我建议使用 poetry 的命令行而不是 creating/manipulating pyproject.toml。

从 poetry init 或 poetry init -n 开始并使用 poetry add 添加您的依赖项。

您当前 pyproject.toml 的问题是，您将内置包声明为依赖项，例如 os、pathlib、string 等。这就是为什么你会收到消息 Because my_project depends on string (*) which doesn't match any versions, version solving failed.，这意味着 poetry 在 repos 中找不到任何匹配的包信息。

Answer 2

tl;dr: 在运行ning poetry lock.

之前刷新 *.egg-info 目录

这个答案与当前问题没有严格的关系，但在其他情况下也会出现类似的错误信息，所以我认为在这里分享它是有价值的。

如果您锁定的项目中 sub-dependencies 可直接在文件系统上使用，某些 *.egg-info 目录可能会干扰锁定过程，导致在尝试运行时出现问题poetry install 在那些 *.egg-info 文件丢失的上下文中。要避免此问题：在锁定之前刷新 *.egg-info 目录。然后您应该有一个包含更多内容的更新 poetry.lock 文件。

诗歌安装 | SolverProblemError Because my_project depends on string (*) which doesn't match any versions, 版本解析失败

poetry install | SolverProblemError Because my_project depends on string (*) which doesn't match any versions, version solving failed

solver

toml

python-poetry