How to install multiple python packages at once us

问题:

I know it's an easy way of doing it but i didn't find it neither here nor on google. So i was curious if there is a way to install multiple packages using pip. Something like:

pip install progra1 , progra2 ,progra3 ,progra4 . 

or:

pip install (command to read some txt containing the name of the modules) 

回答1:

For installing multiple packages on the command line, just pass them as a space-delimited list, e.g.:

pip install wsgiref boto

For installing from a text file, then, from pip install --help:

-r FILENAME, --requirement=FILENAME

Install all the packages listed in the given requirements file. This option can be used multiple times.

Take a look at the pip documentation regarding requirements files for their general layout and syntax - note that you can generate one based on current environment / site-packages with pip freeze if you want a quick example - e.g. (based on having installed wsgiref and boto in a clean virtualenv):

$ pip freeze
boto==2.3.0
wsgiref==0.1.2

回答2:

pip install -r requirements.txt

and in the requirements.txt file you put your modules in a list, with one item per line.

• Django=1.3.1

• South>=0.7

• django-debug-toolbar

回答3:

You can install packages listed in a text file called requirements file. For example, if you have a file called req.txt containing the following text:

Django==1.4
South==0.7.3

and you issue at the command line:

pip install -r req.txt

pip will install packages listed in the file at the specific revisions.

回答4:

Complementing the other answers, you can use the option --no-cache-dir to disable caching in pip. My virtual machine was crashing when installing many packages at once with pip install -r requirements.txt. What solved for me was:

pip install --no-cache-dir -r requirements.txt

回答5:

give the same command as you used to give while installing a single module only pass it via space delimited format