python - pip 从 url 安装包

Question

pip install http://www.crummy.com/software/BeautifulSoup/unreleased/4.x/BeautifulSoup-4.0b.tar.gz

这会安装包 bs4，一切正常。但是如果我将这一行添加到 requirements.txt

http://www.crummy.com/software/BeautifulSoup/unreleased/4.x/BeautifulSoup-4.0b.tar.gz

然后运行

pip install -r requirements.txt

输出是

  Downloading/unpacking http://www.crummy.com/software/BeautifulSoup/unreleased/4.x/BeautifulSoup-4.0b.tar.gz (from -r requirements.txt (line 40))
  Downloading BeautifulSoup-4.0b.tar.gz (42Kb): 42Kb downloaded
  Running setup.py egg_info for package from http://www.crummy.com/software/BeautifulSoup/unreleased/4.x/BeautifulSoup-4.0b.tar.gz

但是没有安装包。

>>> import bs4
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named bs4

Answer 1

请注意，如果您安装了多个解释器并且 pip 使用一个(例如 2.6)而您的 python shell 使用另一个(例如 2.7)，则可能会发生这种情况