python - 为什么 pip 安装包没有出现在 pip freeze 中？

Question

我正在尝试安装 this package通过 pip 。当我运行 pip install flask-googlemaps 时，我看到了通常的输出，包安装成功，还有一些依赖项。如果我随后运行 pip freeze，我会看到列出所有依赖项，但看不到包本身。为什么？

这是我的流程的全面分割。我在一个新的 virtualenv 上进行了测试，以确保我没有错过它。

1. $ mkvirtualenv test1

   New python executable in /Users/me/.virtualenvs/test1/bin/python2.7
   Also creating executable in /Users/me/.virtualenvs/test1/bin/python
   Installing setuptools, pip, wheel...done.
   virtualenvwrapper.user_scripts creating /Users/me/.virtualenvs/test1/bin/predeactivate
   virtualenvwrapper.user_scripts creating /Users/me/.virtualenvs/test1/bin/postdeactivate
   virtualenvwrapper.user_scripts creating /Users/me/.virtualenvs/test1/bin/preactivate
   virtualenvwrapper.user_scripts creating /Users/me/.virtualenvs/test1/bin/postactivate
   virtualenvwrapper.user_scripts creating /Users/me/.virtualenvs/test1/bin/get_env_details
   

2. $ pip 卡住

   (no results, because nothing has been installed yet)
   

3. $ pip install flask-googlemaps

   Collecting flask-googlemaps
     Using cached Flask_GoogleMaps-0.2.5-py2.py3-none-any.whl
   Collecting flask (from flask-googlemaps)
     Using cached Flask-0.12.2-py2.py3-none-any.whl
   Collecting Werkzeug>=0.7 (from flask->flask-googlemaps)
     Using cached Werkzeug-0.12.2-py2.py3-none-any.whl
   Collecting Jinja2>=2.4 (from flask->flask-googlemaps)
     Using cached Jinja2-2.9.6-py2.py3-none-any.whl
   Collecting click>=2.0 (from flask->flask-googlemaps)
     Using cached click-6.7-py2.py3-none-any.whl
   Collecting itsdangerous>=0.21 (from flask->flask-googlemaps)
   Collecting MarkupSafe>=0.23 (from Jinja2>=2.4->flask->flask-googlemaps)
   Installing collected packages: Werkzeug, MarkupSafe, Jinja2, click, itsdangerous, flask, flask-googlemaps
   Successfully installed Jinja2-2.9.6 MarkupSafe-1.0 Werkzeug-0.12.2 click-6.7 flask-0.12.2 flask-googlemaps itsdangerous-0.24
   

4. $ pip 卡住

   click==6.7
   Flask==0.12.2
   itsdangerous==0.24
   Jinja2==2.9.6
   MarkupSafe==1.0
   Werkzeug==0.12.2
   

请注意，flask-googlemaps 不包含在第二个 pip freeze 输出中，但它的所有依赖项都包含在内。

更奇怪的是我现在可以完全访问这个包了。它已安装，只是没有出现在 pip freeze 输出中。

Answer 1

花了一些时间，但我找到了它。

如果你跑

pip install -v flask-googlemaps

你会看到最后

Installing collected packages: Werkzeug, MarkupSafe, Jinja2, click, itsdangerous, flask, flask-googlemaps

  Compiling /private/var/folders/2h/0dr8jftd1916yq_lp40__wzh0000gn/T/pip-build-avapA_/Jinja2/jinja2/asyncfilters.py ...
    File "/private/var/folders/2h/0dr8jftd1916yq_lp40__wzh0000gn/T/pip-build-avapA_/Jinja2/jinja2/asyncfilters.py", line 7
      async def auto_to_seq(value):
              ^
  SyntaxError: invalid syntax

  Compiling /private/var/folders/2h/0dr8jftd1916yq_lp40__wzh0000gn/T/pip-build-avapA_/Jinja2/jinja2/asyncsupport.py ...
    File "/private/var/folders/2h/0dr8jftd1916yq_lp40__wzh0000gn/T/pip-build-avapA_/Jinja2/jinja2/asyncsupport.py", line 22
      async def concat_async(async_gen):
              ^
  SyntaxError: invalid syntax

为了证明这个错误是 flask-googlemaps 没有出现在 pip freeze 上的原因，我安装了一个以前的版本。

pip install flask-googlemaps==0.2.4
Collecting flask-googlemaps==0.2.4
Collecting Flask (from flask-googlemaps==0.2.4)
  Using cached Flask-0.12.2-py2.py3-none-any.whl
Collecting Werkzeug>=0.7 (from Flask->flask-googlemaps==0.2.4)
  Using cached Werkzeug-0.12.2-py2.py3-none-any.whl
Collecting Jinja2>=2.4 (from Flask->flask-googlemaps==0.2.4)
  Using cached Jinja2-2.9.6-py2.py3-none-any.whl
Collecting click>=2.0 (from Flask->flask-googlemaps==0.2.4)
  Using cached click-6.7-py2.py3-none-any.whl
Collecting itsdangerous>=0.21 (from Flask->flask-googlemaps==0.2.4)
Collecting MarkupSafe>=0.23 (from Jinja2>=2.4->Flask->flask-googlemaps==0.2.4)
Installing collected packages: Werkzeug, MarkupSafe, Jinja2, click, itsdangerous, Flask, flask-googlemaps
Successfully installed Flask-0.12.2 Jinja2-2.9.6 MarkupSafe-1.0 Werkzeug-0.12.2 click-6.7 flask-googlemaps-0.2.4 itsdangerous-0.24

Pip freeze 现在可用

pip freeze
click==6.7
Flask==0.12.2
Flask-GoogleMaps==0.2.4
itsdangerous==0.24
Jinja2==2.9.6
MarkupSafe==1.0
Werkzeug==0.12.2

我刚刚提交了一份 GitHub issue代表您。