我正在寻找一种为pip install
模拟pyproject.toml
行为的方法。
pyproject.toml
可以指定构建时间依赖性,例如,如果setup.py
需要额外的包来构建:
设置.py
from setuptools import setup
import colorama # e.g. - non-standard package
setup(...)
这可以由pyproject.toml处理
[build-system]
requires = [
"colorama", # required for running custom code in setup.py
"setuptools>=40.8.0", # required by doc (https://pip.pypa.io/en/stable/reference/build-system/pyproject-toml/)
"wheel", # required by doc (https://pip.pypa.io/en/stable/reference/build-system/pyproject-toml/)
]
build-backend = "setuptools.build_meta:__legacy__" # required by doc (https://pip.pypa.io/en/stable/reference/build-system/pyproject-toml/)
这将允许CCD_ 5运行。
然而,这并不能解决pip install <path>
的问题,因为pyproject.toml只处理构建。
是否也有安装的方法
我唯一的想法是
- 添加一个包装器来安装我不想安装的所需软件包(希望只使用
pip install
( - 呼叫
subprocess.run(f'pip install {pkg}'); importlib.reload(pkg)
有更好的方法吗?
我已经在评论中发布了答案,但由于这很简单,下面是官方答案:
from pip._internal.commands import create_command
package_names = ['colorama'] # packages to install
arguments = ['--upgrade'] # extra arguments
command = create_command("install", isolated=True) # don't know what isolated does, so maybe that needs to change
command.main(package_names + arguments) # execute it
请注意,这是原始函数,调用所有这些函数可能更安全
def main(args=None):
# type: (Optional[List[str]]) -> int
if args is None:
args = sys.argv[1:]
# Configure our deprecation warnings to be sent through loggers
# deprecation.install_warning_logger() # don't call this
autocomplete()
try:
cmd_name, cmd_args = parse_command(args)
except PipError as exc:
sys.stderr.write(f"ERROR: {exc}")
sys.stderr.write(os.linesep)
sys.exit(1)
# Needed for locale.getpreferredencoding(False) to work
# in pip._internal.utils.encoding.auto_decode
try:
locale.setlocale(locale.LC_ALL, "")
except locale.Error as e:
# setlocale can apparently crash if locale are uninitialized
logger.debug("Ignoring error %s when setting locale", e)
command = create_command(cmd_name, isolated=("--isolated" in cmd_args))
return command.main(cmd_args)