Python 3 is the latest major version of Python, a scripting language used by many open source developers.

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91
votes
8answers
265k views

How do I install Python 3.3?

I have downloaded Python 3.3 from the official site but no idea how to install it. I'm using Ubuntu 12.04
60
votes
8answers
322k views

How to install Python 3.4 on Ubuntu?

If I open Terminal and type in python, I see the version is 2.7.4. How do I get python 3.4? And do I need IDLE if I have sublime text?
46
votes
6answers
99k views

How to install pip for python 3 in ubuntu 12.04 LTS

I am trying to install the Pillow module for python 3.3, but for that I need to install pip. Every time that I install pip it installs for python 2.7, any help?
65
votes
7answers
101k views

Make default `python` command to use Python 3

I can access Python 3 via python3 command. But I want to make the default interpreter to use python command for Python 3. Simple typing python takes me to Python 2. How to upgrade?
38
votes
3answers
18k views

pyvenv-3.4 error: returned non-zero exit status 1

When trying to create a virtual environment using the included pyvenv-3.4 that comes with 14.04, it throws an error: Error: Command '['/some/directories/bin/python3.4', '-Im', 'ensurepip', '--upgrade'...
6
votes
2answers
7k views

Open terminal window and execute Python script on startup

I have a Python script which I would like to execute at every startup. I can run it by adding this to the startup applications: python3 /path/to/script.py That works, but it doesn't open a terminal ...
5
votes
2answers
4k views

Changing Python default in 12.04 LTS

I have downloaded and installed python 3.2.3 for Ubuntu/Debian. Also IDLE IDE for 3.2.3. If I execute IDLE for 3.2.3 explicitely, 3.2.3 runs under IDLE and all is well. But if I go to a terminal ...
3
votes
3answers
714 views

Python 3 error when running the print command

All I wrote in the interpreter was as follows: >>> print "Hello, World!" File "<stdin>", line 1 print "Hello, World!" ^ SyntaxError: invalid syntax How ...
4
votes
2answers
11k views

How do I install the latest Python version in Ubuntu?

How to update to the latest Python version in Ubuntu? I tried sudo apt-get install python3 but it says that the current (3.3.1) is already the latest.
35
votes
6answers
91k views

How to create a virtualenv with Python3.3 in Ubuntu?

I'm running Precise Pangolin amd64. I installed Python 3.3 from ppa:fkrull/deadsnakes. Now I want to actually use this new Python version in a virtualenv. But How can I do this? I get the following ...
23
votes
4answers
26k views

How can I install Django for Python 3.x?

I installed Django with this command: sudo apt-get install python-django And it installed version 1.5.4-1ubuntu1. The Django docs say that as of version 1.5, Django supports Python 3. Yet when I ...
4
votes
2answers
2k views

How to create a deb package for a python3 script?

I have one Python file, main.py. I would like to be able to make a .deb package from it, and then be able to run main.py by typing the package name from the terminal. It is written in Python 3, so the ...
12
votes
4answers
3k views

Why isn't python 3 the default python binary?

I installed Ubuntu and type python in a terminal window. I get Python 2.7 and not Python 3.5. According to the docs, Python 3.5 should come preloaded.
6
votes
1answer
15k views

How to create Excel xlsx files from a script?

I'm looking for packages available in Ubuntu main/universe repositories able to create Excel 2007+ xlsx files from a script (python or perl) My requirements: 100% compatible Excel XLSX files. Solid ...
6
votes
3answers
25k views

Installation procedure for numpy and other python-3.4 packages on ubuntu 14.04

I am new to ubuntu and installed ubuntu 14.04 32 bit on my LENOVO hinkpad T410 machine with windows 7 two days ago but since then trying download and install python-3.4 packages (NUMPY, SCIPY) on ...
3
votes
3answers
11k views

Need to have 2 versions of Python without using a VM

I need to have 2 versions of Python installed on my PC. The first must be the latest version in order to use youtube-dl, and the second must be the 2.7 version for a course that says we must not ...
3
votes
2answers
2k views

Problems upgrading to Python 3.3 and setting up Django

I'm new to Linux and am trying to set up Python / Django on my machine! I installed Python 3.3 from the source file and it was compiled into /usr/local/bin. Then I created a symbolic link between /...
5
votes
2answers
5k views

12.10 has Python 3.2.3 default, does this impact existing python tools?

Ubuntu 12.10 has Python 3.2.3 default, so does this impact existing python tools, designed to be used with older python 2.x? There was a discussion in HackerNews on the same. I'm a bit apprehensive ...
2
votes
2answers
4k views

Installing Python 3.4 from source

I am running Xubuntu 13.10 i386 with the python (2.7) and python3 (3.3) packages installed. I have downloaded and compiled the source code for Python 3.4 but the binary file is named python. How can I ...
1
vote
2answers
1k views

python3 is not supporting gtk module

I have Ubuntu 14.04 with python-2.7 and python-3 support. I am porting my python application from python-2.7 to python-3. I have example.py file which is importing below modules. and I #!/usr/bin/...
5
votes
1answer
5k views

How to install sympy for Python 3.4

I installed the Python scipy stack using the following command taken from here sudo apt-get install python-numpy python-scipy python-matplotlib ipython ipython-notebook python-pandas python-sympy ...
2
votes
2answers
1k views

Changing python version without breaking software center

I have been fiddling with my Python installation on Ubuntu 12.04 (I was having trouble installing a python library), and at one point my python command wasn't working. It turned out the symlink was ...
0
votes
0answers
71 views

Errors in installing virtualenv after installing to python 3.3.0 also

I am getting this error when I run the sudo pip install virtualenv command. I tried installing the python 3.3.0 version also which you can notice below. but I am not able to make the python3.3.0 ...
0
votes
2answers
443 views

Is it okay to mess around with Python that comes with Ubuntu?

I've just installed Ubuntu 14.04 LTS and am new to Linux. I know that Ubuntu 14.04 LTS comes with Python 3.4.0. Is it okay if I install pip3 and install packages (e.g. django, numpy, etc.) on it? Can ...
37
votes
2answers
36k views

'unsupported locale setting' fault by command-not-found

I recently installed Ubuntu 12.10 by keeping the home folders from Linux Mint 13 distribution. The system installed fine, but at the beginning everything was in Chinese (even the text in the Terminal)....
15
votes
2answers
112k views

How to find python installation directory on ubuntu

I have just migrated from Windows environment. I have installed Python 3.2 in a separate directory. How can I get the python installation path on ubuntu shell ? Is there any way I can let shell know/...
7
votes
1answer
3k views

pyvenv-3.4 disappeared in Ubuntu 14.04.3?

This is what I was doing to create a venv in Python 3.4 on Ubuntu 14.04.3 LTS until last week: » pyvenv-3.4 --without-pip venv I was doing that because of this. But since yesterday: » pyvenv-3.4 --...
12
votes
1answer
12k views

What's the easiest way to get Vim with Python 3 support?

I have Ubuntu 14.04 installed and Vim in its repos is compiled without Python 3 support. Because of that, python-mode plugin can't work with Python 3 code. What's the easiest way to get Vim with ...
8
votes
1answer
17k views

Install and run Python 3 at the same time than Python 2

Im using 13.04 but I want have installed the both main Python versions for make tests about migration of my actual code. is possible install Python 3 in the same machine running Python 2.7? I need ...
5
votes
2answers
1k views

Take screenshots at random intervals with Python?

I am working on a project to take screenshots of desktop and upload images to a server I want to develop a python app, when user starts that app it will start taking screenshots in random interval ...
5
votes
2answers
5k views

Unable to install python3-dev ubuntu

When I tried to install python3-dev using sudo apt-get install python3-dev I got the following message python3-dev : Depends: libpython3-dev (= 3.4.0-0ubuntu2) but it is not going to be installed ...
2
votes
1answer
3k views

Unable to import tkinter?

I am studying Python and tried to make GUI using python.I am using IDLE 3.2 on 12.04 Ubuntu.When i typed import Tkinter, a error comes, it says following: Traceback (most recent call last): File "&...
2
votes
2answers
409 views

Accidentally deleted /usr/lib/python3.4

I am on ubuntu 14.04 and I accidentally deleted python3.4 I am trying apt-get install python3.4 dpkg-reconfigure -a apt-get install -f But I am seeing the following errors dpkg: error processing ...
0
votes
1answer
2k views

how to use python 3's pip?

I want to switch my project from python 2.7 to python 3.4 and I want to use python3's virtualenvwrapper and pip. I have tried sudo apt-get install python3-pip, easy_install3 pip and python3 get-pip....
3
votes
1answer
1k views

installing numpy for python 3.1.2 on Ubuntu 10.04

I have installed numpy for python 2.6.5. I want to use it for python 3.1.2 and I don't know how to install it. I'm new to ubuntu and I don't know how to install it from tar file. I am using Geany for ...
3
votes
1answer
537 views

how to use python3 shortcuts on emacs?

I am new to emacs and I am trying to set python3 as default interpreter. I have installed from software centre the python plugin for emacs. I can run a python3 file going to pyexec-->execute file....
2
votes
2answers
10k views

unable to install/import tkinter

I got a pretty confusing Problem: I build a python program using tkinter. Then I dist-upgraded my ubuntu 13.10 (amd64) to ubuntu 14.04 LTS, now I tried to run my tkinter program. My compiler told me ...
2
votes
1answer
2k views

Installing python 3.x on Ubuntu 15.10

I have already python 2.7 on my machine. I can't recall if I installed it or it is a built-in install. Anyhow, I would like to install work with python 3.x and I wonder if I need first to uninstall ...
1
vote
0answers
2k views

Really installing PyQt4/5 for python 3.4 on trusty

I am using Python 3 on my ubuntu 14.04.2 (trusty), along with Python 2. I am trying to run ipython --pylab, but with Python 3, this fails (works well with Python 2). It fails since it needs QT4/5 or ...
1
vote
1answer
13k views

I want to uninstall Python3 and just use 2.7

I typed in this to the terminal: sudo apt-get remove python3 And it gave me the following output: Reading package lists... Done Building dependency tree Reading state information... Done ...
1
vote
0answers
186 views

libtiff module not found on 64-bit Ubuntu 14.04 python 3.5.1 (or 3.4)

My problem is pretty much identical to here except none of the solutions there are working for me. I'm assuming the issue there was for python 2.7 because my issue is specific to python 3.5.1 TL;DR: ...
0
votes
1answer
90 views

rhythmbox crashes due “Failed to import the site module”

I updated my machine from 15.10 to 16.04 a few days ago. Now I have to face this strange Issue: rhythmbox tells me, that it Failed to import the site module and crashes, because python3.5 is missing ...
0
votes
2answers
3k views

How to install python3-django in 14.04?

python3-django is a package available in the repos for Ubuntu 15.04. It isn't in the default repos for Ubuntu 14.04. How can I install it in Ubuntu 14.04?