如何使用 pip requirements.txt 文件安装 python 模块附加功能

Question

pip requirements.txt documentation 表示可以使用类似

的行安装附加功能

MyPackage==3.0 [PDF]

所以在我的 requirements.txt 文件中有一行内容为：

requests==2.9.1 [security]

但我运行命令时没有为请求模块安装安全附加功能：

pip install -r requirements.txt

我收到一条错误消息，提示我的文件格式不正确：

Invalid requirement: 'requests==2.9.1 [security]'
Traceback (most recent call last):
  File "/Library/Python/2.7/site-packages/pip/req/req_install.py", line 77, in __init__
    req = pkg_resources.Requirement.parse(req)
  File "/Library/Python/2.7/site-packages/pip/_vendor/pkg_resources/__init__.py", line 3036, in parse
    req, = parse_requirements(s)
  File "/Library/Python/2.7/site-packages/pip/_vendor/pkg_resources/__init__.py", line 2980, in parse_requirements
    "version spec")
  File "/Library/Python/2.7/site-packages/pip/_vendor/pkg_resources/__init__.py", line 2956, in scan_list
    raise RequirementParseError(msg, line, "at", line[p:])
RequirementParseError: Expected ',' or end-of-list in requests==2.9.1 [security] at  [security]

有谁知道我做错了什么吗？

Answer 1

正确的语法是：

requests[security] == 2.9.1

链接的文档似乎是 pip v1.1，而最新的稳定版本是 v8.1。 latest docs for pip are here, but you have to click a few more links to get to the formatting specs for requirements (PEP 0508).

如何使用 pip requirements.txt 文件安装 python 模块附加功能

How to install python module extras with pip requirements.txt file

python

pip

requirements.txt