I have python installed in two locations, in os default it's 2.6.6 and in /usr/local/bin/python2.7 has 2.7.
I have installed cairo (cairo-1.12.18) via source using configure/make/make install, but it appears to have installed under python 2.6.6. How do I install it for python2.7?
[root#xxxxx ~]# python
Python 2.6.6 (r266:84292, Oct 12 2012, 14:23:48)
[GCC 4.4.6 20120305 (Red Hat 4.4.6-4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import cairo
>>>
[root#xxxxx ~]# /usr/local/bin/python2.7
Python 2.7.8 (default, Nov 18 2014, 11:15:00)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-3)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import cairo
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named cairo
>>>
Thank you.
Be sure to install it using python 2.7 and not python 2.6 (run make and make install using python 2.7). I assume you use Linux OS so your default Python is 2.7, you can change your default Python but it's not recommended due to several reasons. Please look at this StackOverflow question and answers for more informations:
Two versions of python on linux. how to make 2.7 the default
Related
I have been using lirc in Python 2.7 and Python 3.5.3 on Rpi3. Now I have installed Python 3.8.7 from source code, but I am not able to use lirc in this version of Python, but it still works in Python 3.5. apt-get reports that python3-lirc is already the newest version (1.2.1-2). How to get lirc work in both Python 3.5 and 3.8?
pi#RPi3:~ $ python
Python 3.8.7 (default, Jan 7 2021, 08:59:27)
[GCC 6.3.0 20170516] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import lirc
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'lirc'
>>>
pi#RPi3:~ $ python3.5
Python 3.5.3 (default, Nov 18 2020, 21:09:16)
[GCC 6.3.0 20170516] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import lirc
>>> sockid=lirc.init("myProg", blocking = False)
>>>
It means that you installed lirc on only one of the two pythons.
Use the pip from your Python 3.8 to install lirc so that the module will also be accessible to your Python 3.8.
Module lirc has to be uninstalled with pip, then python-lirc can be installed in Python 3,8 as described in https://github.com/tompreston/python-lirc/issues/26 after installing cyhton with pip.
I've successfully compiled the caffe library and the python module.
I can do this:
Jamess-Air:~ james$ python2 -V
Python 2.7.10
Jamess-Air:~ james$ python2
Python 2.7.10 (default, Jul 13 2015, 12:05:58)
[GCC 4.2.1 Compatible Apple LLVM 6.1.0 (clang-602.0.53)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import caffe
>>>
But, bizarrely, this fails:
Jamess-Air:~ james$ python2.7 -V
Python 2.7.10
Jamess-Air:~ james$ python2.7
Python 2.7.10 (default, Jun 19 2015, 15:39:31)
[GCC 4.2.1 Compatible Apple LLVM 6.1.0 (clang-602.0.53)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import caffe
Segmentation fault: 11
Jamess-Air:~ james$
I cannot understand this at all! Whenever I try to run using iPython notebook I get the same crash.
Any ideas as to what may be causing this, and how I might fix it, or at least get iPython Notebook to use the different python version so I can run this thing?
Thanks!
I try to visualize graph with matplotlib in python but I have few problem in my mac (Yosemite 10.10.2). I already installed matplotlib, and I know that I have 2 version of python installed in my computer, which are 2.7.8 and 2.7.6
Using default interpreter which is python 2.7.8, I got this error
dhcPlus-mbp:~ macbook$ python
Python 2.7.8 (v2.7.8:ee879c0ffa11, Jun 29 2014, 21:07:35)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import matplotlib
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named matplotlib
But if I try this one, it works on terminal. But I can't build straight from my Sublime with Ctrl+B
dhcPlus-mbp:~ macbook$ /usr/bin/python
Python 2.7.6 (default, Sep 9 2014, 15:04:36)
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.39)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import matplotlib
>>>
My question is, how could I change default python interpreter so I can use the 2.7.6 in my environment?
Any help is greatly appreciated. Thank you very much.
This problem solved by removing the extra Python libraries on Mavericks by
sudo rm -rf /Library/Frameworks/Python.framework/
How can I install ZODB for Python 3? I installed python-ZODB3 in Fedora, but I can use ZODB only in Python 2:
$ python
Python 2.7.5 (default, Sep 25 2014, 13:57:38)
[GCC 4.8.3 20140911 (Red Hat 4.8.3-7)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import ZODB
>>> quit()
$ python3
Python 3.3.2 (default, Jun 30 2014, 17:20:03)
[GCC 4.8.3 20140624 (Red Hat 4.8.3-1)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import ZODB
Traceback (most recent call last):
File "/usr/lib64/python3.3/code.py", line 90, in runcode
exec(code, self.locals)
File "<console>", line 1, in <module>
ImportError: No module named 'ZODB'
Which package am I missing?
In general, the Fedora name for Python package foo for Python 3.x is python3-foo, not python-foo3.
In particular, python-ZODB3 is the Python 2.x package for ZODB3. (ZODB3 is the obsolete version 3 of ZODB, still provided for backward compatibility.) Both the old 3.x and new 4.x versions of ZODB work for both Python 2.x and 3.x; that means there are (at least potentially) packages named python-ZODB (ZODB 4.x for Python 2.x), python3-ZODB (4.x for 3.x), python-ZODB3 (3.x for 2.x), and python3-ZODB3 (3.x for 3.x). It's the second one you want, not the third.
I can't guarantee that your Fedora version and repos have a python3-ZODB RPM, but from a quick search, I found this, so at least some Fedora-based systems have one.
If there's not a Fedora RPM for that, you can probably install it via pip, something like pip3 install ZODB.
I've installed Python 3.3 alongside Python 2.75 on my Ubuntu machine. The problem is that easy_install gets packages for the default, 2.75 version only, e.g:
easy_install pymongo
$ python
Python 2.7.4 (default, Apr 19 2013, 18:28:01)
[GCC 4.7.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pymongo
>>>
But:
$ python3.3
Python 3.3.1 (default, Apr 17 2013, 22:30:32)
[GCC 4.7.3] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import pymongo
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named 'pymongo'
How can I install PyPi packages for the Python 3.3 installation?
You need easy_install3. In apt-get you get it by
apt-get install python3-setuptools