Installing twisted on python 3.5 and virtualenv using pip

Question

when i run

pip install twisted

in the command line in windows, it starts installing packages until the flowing line comes up.

failed building wheel for twisted 

pip then crashed soon after, saying it has failed the installation.

why is this ?

is there a way round it to install twisted?

my wheel version is 0.29, windows 10. twisted installs fine on python 2.7

thanks

Answer 1

I meet similar problem like yours.You can try to install the Twisted whit wheels

but at first,you should install the wheels

pip install wheels

then,download an appropriate version from this

website: http://www.lfd.uci.edu/~gohlke/pythonlibs/#twisted

you can get xxxx.whl file

use

pip install xxxx/xxxxxx.whl

Finished!

Answer 2

Basically, that is not a programming question (I feel it might as well fit well into https://superuser.com/ or https://serverfault.com/ ).

Could you please provide a tad more information? What OS are you running? What version?

For comparison, I'm running Debian GNU/Linux (testing), and

pip3 install twisted

performs fine:

collecting twisted
  Using cached Twisted-17.1.0.tar.bz2
Collecting zope.interface>=4.0.2 (from twisted)
  Using cached zope.interface-4.3.3.tar.gz
Collecting constantly>=15.1 (from twisted)
  Downloading constantly-15.1.0-py2.py3-none-any.whl
Collecting incremental>=16.10.1 (from twisted)
  Downloading incremental-16.10.1-py2.py3-none-any.whl
Collecting Automat>=0.3.0 (from twisted)
  Using cached Automat-0.5.0-py2.py3-none-any.whl
Requirement already satisfied: setuptools in /usr/local/lib/python3.5/dist-packages (from zope.interface>=4.0.2->twisted)
Requirement already satisfied: six in /usr/lib/python3/dist-packages (from Automat>=0.3.0->twisted)
Collecting attrs (from Automat>=0.3.0->twisted)
  Using cached attrs-16.3.0-py2.py3-none-any.whl
Requirement already satisfied: packaging>=16.8 in /usr/local/lib/python3.5/dist-packages (from setuptools->zope.interface>=4.0.2->twisted)
Requirement already satisfied: appdirs>=1.4.0 in /usr/local/lib/python3.5/dist-packages (from setuptools->zope.interface>=4.0.2->twisted)
Requirement already satisfied: pyparsing in /usr/local/lib/python3.5/dist-packages (from packaging>=16.8->setuptools->zope.interface>=4.0.2->twisted)
Building wheels for collected packages: twisted, zope.interface
  Running setup.py bdist_wheel for twisted ... done
  Stored in directory: /root/.cache/pip/wheels/65/e3/44/cd3da92c03926aabc80e658e11d6e64619abce3ef44c1c34df
  Running setup.py bdist_wheel for zope.interface ... done
  Stored in directory: /root/.cache/pip/wheels/00/aa/8b/f1d1eb398423e59894b45ee151344e243808156c2d182c9f4e
Successfully built twisted zope.interface
Installing collected packages: zope.interface, constantly, incremental, attrs, Automat, twisted
Successfully installed Automat-0.5.0 attrs-16.3.0 constantly-15.1.0 incremental-16.10.1 twisted-17.1.0 zope.interface-4.3.3

I must admit, this install was done outside of virtualenv. Did you try installing twisted outside your virtualenv?