requirements.txt 文件的内容结构定义如下:
[[--option]...]
<requirement specifier> [; markers] [[--option]...]
<archive url/path>
[-e] <local project path>
[-e] <vcs project url>
定义包<requirement specifier>和可选版本。
SomeProject
SomeProject == 1.3
SomeProject >=1.2,<2.0
SomeProject[foo, bar]
SomeProject~=1.4.2
(--option例如-f/--find-links )与从命令行执行时将使用的pip 安装选项相同。pip install
支持以下选项:
- -i, --index-url
- --extra-index-url
- --无索引
- -c,--约束
- -r,--要求
- -e,--可编辑
- -f,--查找链接
- --无二进制
- --仅二进制
- --需要哈希
- --pre
- --可信主机
因此,对于您的安装命令,requirements.txt 将如下所示:
# Torch
--find-links https://download.pytorch.org/whl/torch_stable.html
torch==1.5.0+cu101
torchvision==0.6.0+cu101
# Detectron
--find-links https://dl.fbaipublicfiles.com/detectron2/wheels/cu101/index.html
detectron2
确保验证链接是否正确使用:
$ pip install -r requirements.txt
Looking in links: https://download.pytorch.org/whl/torch_stable.html, https://dl.fbaipublicfiles.com/detectron2/wheels/cu101/index.html
Collecting torch==1.5.0+cu101 (from -r requirements.txt (line 3))
Using cached https://download.pytorch.org/whl/cu101/torch-1.5.0%2Bcu101-cp38-cp38-linux_x86_64.whl
Collecting torchvision==0.6.0+cu101 (from -r requirements.txt (line 4))
Using cached https://download.pytorch.org/whl/cu101/torchvision-0.6.0%2Bcu101-cp38-cp38-linux_x86_64.whl
Collecting detectron2 (from -r requirements.txt (line 8))
Using cached https://dl.fbaipublicfiles.com/detectron2/wheels/cu101/detectron2-0.1.2%2Bcu101-cp38-cp38-linux_x86_64.whl
...
作为旁注,您最初在标题中说“(不是 github)”。使用安装的包的默认源pip托管在 PyPi 上:https ://files.pythonhosted.org/ 。转到 PyPi 中软件包的下载文件部分时,您可以看到实际链接(以Torch为例)。