Getting ignoring ensurepip failure pip requires ssl/tls error when trying to install python and pip in Ubuntu 18.04
Trying to run sudo make install gets the above error.
# Download Python
curl -O https://www.python.org/ftp/python/3.4.2/Python-3.4.2.tgz
tar -xzvvf Python-3.4.2.tgz
cd Python-3.4.2
export CFLAGS="-I/usr/local/opt/openssl/include -L/usr/local/opt/openssl/lib -I/usr/local/opt/zlib/include -L/usr/local/opt/zlib/lib"
# Required Dependencies
sudo apt-get install libssl-dev openssl
sudo apt-get install build-essential checkinstall
sudo apt-get install libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev libpq-dev zlib1g-dev
# Prepare to install Python
./configure
make -j4
sudo make install
This is a python compilation issue that has been fixed as of Python 3.4.5. Best practice would be to upgrade to 3.4.5 and follow the compilation steps again.
For those coming here for Python <3.5.3 with the same issue, this same issue has been fixed as of 3.5.3 (see here).
I am not sure if other Python versions are affected, but have seen in the Patch notes that in later versions also a fix was made for Windows and MacOSX. Please check the change log for the Python major version you are using to see which fix applies to you. the change logs can be found here: (Python 3.4, Python 3.5)
This is due to Debian 9 using OpenSSL 1.1.0., However, OpenSSL 1.1.0 support in the SSL module was only added to Python 2.7.13, 3.5.3 and 3.6+
Thus, it makes the python under those versions cannot be correctly linked to ssl library. Issues https://github.com/pyenv/pyenv/issues/945
So you have to manually add those libraries when you are compiling them.
My suggestion
Since your system is already compiled with the default python, unintentionally compiled different version of python into global executable may cause many hidden problems, especially some commands used behind on system-default python.
So why not you use pyenv, to control those version of pythons? pyenv is like a python-version control programs, it uses shims, through a process called rehashing, pyenv maintains shims in that directory to match every Python command across every installed version of python, pip, and so on.
For more documents, please reading: https://github.com/pyenv/pyenv.
To install pyenv, please following the provided reference.
Solution
After many hours struggling, I finally found a solution to perfectly solve those version of pythons confliction problems, copy and paste the following script to a new file, and make it executable, then you can compile and install those pythons. While if you want to install them in other way, say, without using pyenv, please change the last second line commands to fit your needs.
#!/bin/bash -e
# Note: it is a script to solve Ubuntu 18.04 LTS
# different version of pythons compiling
# header confliction problems
#
# The idea is got from #JustAnotherArivist
# From URL: https://github.com/pyenv/pyenv/issues/945
#
# The script used in here is with slightly modifications
# to fit many different SSL header versions
# First under your home directory make OpenSSL library
# and extract useful package
mkdir ~/libssl1.0-dev
cd ~/libssl1.0-dev
apt-get download libssl1.0-dev
ar x libssl1.0-dev* data.tar.xz
tar -xf data.tar.xz --strip-components=2
# Second, specifically get your current system's SSL headers
# and make symbolic-links
libcrypto=$(ls /usr/lib/x86_64-linux-gnu/ | grep libcrypto.so......)
libssl=$(ls /usr/lib/x86_64-linux-gnu/ | grep libssl.so......)
ln -s /usr/lib/x86_64-linux-gnu/${libcrypto} ~/libssl1.0-dev/lib/x86_64-linux-gnu
ln -s /usr/lib/x86_64-linux-gnu/${libssl} ~/libssl1.0-dev/lib/x86_64-linux-gnu
# Set your CFLAGS LDFLAGS compile options
# And use pyenv install the python version <3.4.5 or <3.5.3
# Note: it is a one line command
# Please change the version of python that you want to compile
CFLAGS="-I${HOME}/libssl1.0-dev/include -I${HOME}/libssl1.0-dev/include/x86_64-linux-gnu" \
LDFLAGS="-L${HOME}/libssl1.0-dev/lib/x86_64-linux-gnu" \
pyenv install 3.4.2
# Remove tempor libssl1.0-dev direcotory
rm -rf ~/libssl1.0-dev
I am using Python 3.6. When I try to install "modules" using pip3, I face this issue:
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available
For Windows 10
if you want use pip in normal cmd, not only in Anaconda prompt. you need add 3 environment paths.
like the followings:
D:\Anaconda3
D:\Anaconda3\Scripts
D:\Anaconda3\Library\bin
most people only add D:\Anaconda3\Scripts
MAC OS
I had the same problem on Mac OS(Mojave) and solved the problem as mentioned on this link - Openssl issue.
If you do not have Homebrew or don't know what is Homebrew:
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
Or if you already have Homebrew installed:
brew update && brew upgrade
brew uninstall --ignore-dependencies openssl; brew install https://github.com/tebelorg/Tump/releases/download/v1.0.0/openssl.rb
Update:
Keep in mind, that I had to use --ignore-dependencies flag, because other packages installed that depend on OpenSSL.
Additional if the problem is caused after using pyenv, you can fix it by using:
brew reinstall python
For Debian users, the following may be of use:
sudo apt install libssl-dev libncurses5-dev libsqlite3-dev libreadline-dev libtk8.6 libgdm-dev libdb4o-cil-dev libpcap-dev
Then cd to the folder with the Python 3.X library source code and run:
./configure
make
make install
I'm using Windows 10 and installed Miniconda 3 with Python 3.7.
I solved this error by following this https://github.com/conda/conda/issues/8273
Specifically, I copied the following files from C:\Users\MyUser\Miniconda3\Library\bin to C:\Users\MyUser\Miniconda3\DLLs:
libcrypto-1_1-x64.dll
libcrypto-1_1-x64.pdb
libssl-1_1-x64.dll
libssl-1_1-x64.pdb
For centos 7:
Install openssl:
sudo yum install openssl-devel
now goto python directory were we extracted the python tar,
run below commands
sudo ./configure
sudo make
sudo make install
This will fix the problem in centos...
For future Oracle Linux users trying to solve this, below is what worked for me.
First install missing libs:
yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel
readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel
Then cd to your Python3.X library and run:
make
make install
macOS, pyenv
In case of your python being an pyenv installed one, where pyenv is installed with homebrew on macOS, there might me a newer version available which fixes this:
$ brew update && brew upgrade pyenv
Then reinstalling the python version:
$ pyenv install 3.7.2
pyenv: /Users/luckydonald/.pyenv/versions/3.7.2 already exists
continue with installation? (y/N)
Note, it is a bit dirty to overwrite the existing python install like that, but in my case it did work out. Probably cleaner to delete it and then recreate it properly.
For Windows 10,windows 7
If pip install is not working on CMD prompt, run it using Anaconda prompt - it works.
https://github.com/pypa/virtualenv/issues/1139
Worked for me.
sudo apt-get install libssl-dev
Use this to enable ssl for pip.
Let me know if someone encounters issues.
Encountered this issue while installing python 3.8 from source on ubuntu. The steps needed to install it successfully alongside the default python 3.7 are summarised below :
sudo apt -y install libssl-dev zlib1g-dev build-essential
wget https://www.python.org/ftp/python/3.8.0/Python-3.8.0.tgz
tar -xf Python-3.8.0.tgz
cd Python-3.8.0/
./configure --enable-optimizations
make
sudo make altinstall
The install instruction for zlib1g-dev and build-essential is redundant, as ubuntu desktop already has these, but was necessary for some of Amazon's EC2 instances. python 3.8.0 is the current release just now, but should be replaced with the latest available.
These instructions are best for keeping python 3.7 as the default for python3, and running python 3.8 in a virtual environment.
Similar to the above solution reinstall the python version with pyenv.
Somehow, I upgraded my openssl which broke the pyenv version python.
pyenv install 3.6.8
python-build: use openssl#1.1 from homebrew
python-build: use readline from homebrew
...
The first line says it relies on the homebrew openssl.
In my case, I reinstalled Python. It solved the problem.
brew reinstall python
For OpenSUSE in the same manner, but a few changes of listed above packages:
zypper install zlib-devel libopenssl-devel ncurses-devel sqlite3-devel readline-devel tk-devel gdbm-devel libpcap-devel xz-devel
Then cd to Python sources dir and
make
make install
or
make
make altinstall
And perhaps
ln -s /usr/local/lib64/python3.6/lib-dynload/ /usr/local/lib/python3.6/lib-dynload
should be executed for OpenSUSE users. See Python 3.7 install not working on openSUSE Leap 42.3
Just try installing through Anaconda prompt
I ran into this issue with Visual Studio Code installing pylint from the VS Code prompt.
I was able to overcome the issue by opening the Anaconda installation directory and running
pip install pylint
Then VS Code was happy, but that did not fix the issue as running
& C:/Users/happy/Anaconda3/python.exe -m pip install -U pylint
pretty much gave the same error so it seems that VS Code is unable to access the python modules.
Note that VS Code picks up the first python env it see when installed, the bottom left of the screen indicates which env is being used. Clicking on that area allows to set the environment. So even if you ran the pip install for an environment VS Code could be looking at a different one.
Best approach was to make sure that VS code had the correct python environment selected and that same environment is in the system PATH (under System Properties --> Advanced --> Environmental Variables)
Under the Path Variable, Edit and browse to the specific Anaconda directory that you want VSCode to use and add to PATH, I needed to Add the following:
C:\Users\happy\Anaconda3\
C:\Users\happy\Anaconda3\Scripts\
C:\Users\happy\Anaconda3\Library\bin\
C:\Users\happy\Anaconda3\Library\mingw-w64\bin\
Your Anaconda installation directory may differ.
One note is that Windows does not have the PATH variable take effect until you restart the terminal. In this case close and re-op VS code. If using a Terminal or PS Shell then close and reopen and check Path to make sure it is included.
The problem probably comes from your installed openssl package version. That was the case for me and I fixed this issue just upgrading it. I'm on Mac OS, using brew :
brew upgrade openssl
If you installed python with brew, this should directly fix the issue with it, as python is dependent on openssl
Newest Python 3.8.4 or higher should able to support https protocol out of box. If you still have old python installation on your pc - either download & install python3 manually, or using Chocolatey:
If you don't have Chocolatey, install it - from here: https://chocolatey.org/docs/installation
You can just copy paste one command line liner and execute it from command prompt with elevated priviledges.
choco install python3
if you don't have python3 installed, or you you have it installed - then:
choco upgrade python3
Notice also that you can use also anaconda distribution, as it has built-in python with https support, but this rather ancient instructions, no need to follow them anymore.
Install anaconda, using command line:
choco install anaconda3
Set environment variables:
set PATH=C:\tools\Anaconda3\Scripts;C:\tools\Anaconda3;C:\tools\Anaconda3\Library\bin;%PATH%
and then run command which failed. In my case it was:
pip install conan
Anaconda uses separate python installation, and pip is also anaconda specific.
As Tokci said, it also works for Windows 7.
"Go with the mouse to the Windows Icon (lower left) and start typing "Anaconda". There should show up some matching entries. Select "Anaconda Prompt". A new command window, named "Anaconda Prompt" will open."
Then pip works.
The following also helped to import xgboost:
https://www.youtube.com/watch?v=05djBSOs1FA
If someone is using Arch Linux OS, I solved the TLS/SSL problem by running this:
sudo pacman -S openssl
Then I could use pip to install the package I needed:
pip install openpyxl
Go to Anaconda prompt and type (if you have python 3.x installed on your engine) :
py -m pip install pymysql
i was having the same issue and this solved my problem. later after doing this you can import pymysql in power shell or any other prompt.
The issue is due to OpenSSL package is missing on your PC.
If pip install openpyxl also gives error.
you can fix this by installing OpenSSL(Win64 OpenSSL v1.1.1g) from below site :
slproweb.com/products/Win32OpenSSL.html
Restart the IDE you are using, for changes to be in effect.
In Windows 10 SQL Server 19 the solution is known.
Copy the following files:
libssl-1_1-x64.dll
libcrypto-1_1-x64.dll
from the folder
C:\Program Files\Microsoft SQL Server\MSSSQL15.MSSQLSERVER\PYTHON_SERVICES\Library\bin
to the folder
C:\Program Files\Microsoft SQL Server\MSSSQL15.MSSQLSERVER\PYTHON_SERVICES\DLLs
Then open a new DOS command shell prompt.
From https://learn.microsoft.com/en-us/sql/machine-learning/troubleshooting/known-issues-for-sql-server-machine-learning-services?view=sql-server-ver15#7-unable-to-install-python-packages-using-pip-after-installing-sql-server-2019-on-windows
Worked for me.
pkg install openssl
Use this to enable ssl.
Currently there is same issue in Anaconda prompt (Anaconda3) on Windows 10. Here is workaround: https://github.com/ContinuumIO/anaconda-issues/issues/10576
Fixed this without having to change anything related to TSL/SSL.
I was trying to see if the same thing was happening to pip, and saw that pip was broken. Did some digging and realized it's probably caused by Homebrew deleted python#2 on February 1st, 2020.
Running brew uninstall python#2 to delete python2 installed by Homebrew.
Destroyed the virtual env created using python3 and created a new one. pip3 installing works fine again.
I am on macOS and I had used brew but what Vaulstein mentioned in his answer didn't cover my case.
I run the following commands to make sure my current python was not installed by brew
brew list | grep python
python
python#2
brew info python
python#3.8: stable 3.8.3 (bottled)
Interpreted, interactive, object-oriented programming language
https://www.python.org/
Not installed
...
So I download the latest 3.8.5 from https://www.python.org/ and when installing it I saw following information
Certificate verification and OpenSSL
This package includes its own private copy of OpenSSL 1.1.1. The
trust certificates in system and user keychains managed by the
Keychain Access application and the security command line utility are not used as defaults by the Python ssl module
After installed 3.8.5 it fixed the problem.
I got into this problem using Ubuntu, pyenv and Python 3.8.1 managed by pyenv. There was actually no way to get pip to work correctly, since every time I tried to install anything, including pip itself, the same error showed up.
Final solution was to install, via pyenv, a newer version, in this case 3.8.6. Apparently, from 3.8.4 Python is prepared to run SSL/TLS out of the box, so everything worked fine.
I simply solved the problem with following command:
brew upgrade python#3.9
SSL is included by default on this version!
In my case I was running into issues with my $PATH on Linux. This can also happen on MacOS.
Check to see if /usr/bin/pip3 install package_name_goes_here works for you. If so then run
which pip3 this will tell you which is the first directory that pip3 is installed in.
If it is something like /usr/local/bin/pip3 which is different from /usr/bin/pip3 then you may need to adjust your $PATH.
Run
echo $PATH and copy the result.
The PATH is simply a colon separated list of directories that contain directories. Bash will always return the first instance of the program that you are attempting to execute. Move all the system directories upfront. Here is a list of some of the system directories:
/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin
If that fails then verify you have openssl installed by running openssl version -a if not then install openssl.
If you've installed anaconda via scoop, and encounter this error while using pip from within a conda environment you can resolve it by...
Adding these to your path
C:\Users\YOUR_USERNAME\scoop\apps\anaconda3\current
C:\Users\YOUR_USERNAME\scoop\apps\anaconda3\current\Scripts
C:\Users\YOUR_USERNAME\scoop\apps\anaconda3\current\Library
C:\Users\YOUR_USERNAME\scoop\apps\anaconda3\current\Library\bin
Installing openssl via scoop
scoop install openssl
And copying the following DLLs from ..\anaconda3\Library\bin to ..\anaconda3\DLLs
References:
https://stackoverflow.com/a/54897379
https://stackoverflow.com/a/60405693
I'm new for linux and python ，yesterday I update my python from 2.6.6 to 2.7.13，but when i finished these command "./configure 、make、make install " ,then run "python“ ,I got "command not found ". thanks for help
I completely agree with the answer provided by #holdenweb. Just to add some more details considering for a tyro:
If you need access to a newer version of Python you must compile it yourself and install it side-by-side with the system version.
Here are the steps necessary to install Python 2.7. Execute all the commands below as root. Either log in as root temporarily or use sudo.
Install development tools
In order to compile Python you must first install the development tools:
The first one is :
yum groupinstall "Development tools"
You also need a few extra libraries installed before compiling Python or else you will run into problems later when trying to install various packages:
yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel
Download, compile and install Python
The --no-check-certificate is optional
cd /opt
wget --no-check-certificate https://www.python.org/ftp/python/2.7.6/Python-
2.7.6.tar.xz
tar xf Python-2.7.6.tar.xz
cd Python-2.7.6
./configure --prefix=/usr/local
make && make altinstall
It is important to use altinstall instead of install, otherwise you will end up with two different versions of Python in the filesystem both named python.
After running the commands above your newly installed Python 2.7 interpreter will be available as /usr/local/bin/python2.7 and the system version of Python 2.6.6 will be available as /usr/bin/python and /usr/bin/python2.6.6.
Now Python is an essential component of many operating systems, the safest rule is leave the system's Python to the system, and don't modify it yourself. That way you can be sure you aren't going to interfere with any OS code that depends on a specific version of Python.
If you want some other version of Python to be your own default, install it somewhere like /usr/local/bin (the default installation for most Linux systems will put it there by default) and then put that directory at the front of your shell's PATH to ensure that the python command gets your version instead of the system's (which will remain as /usr/bin/python).
I would recommend that you re-link /usr/bin/python to point to /usr/bin/python2.6 and then the PATH adjustment mentioned above (but in your case adding /usr/local/python2.7.13/bin, which is where you seem to have installed your updated Python) should be all you need to do.
I have ubuntu 10.04 with python2.6 by default. I have installed python2.7.
When I want to install python packages with
apt-get python-<package>
it gets installed to python2.6. How can I make it to install the package to python2.7? Is there any option?
I have looked at this, but I could not find such directories in my OS. I have considered using easy_install-2.7, but not all packages are supported. For example python-torctl.
I am more interested in binding python2.7 with apt-get install.
Python has got its own package managing facilities, in parallel to the one sets by the Linux distributions (including Ubuntu). The repository is the Pypi - Python Package Index, and packages are installed with pip or the easy_install script, which is part of Python's setuptools package.
As a rule of thumb, you should not use both the packages installed via pip/setuptools, and packages available to your distro (via apt-get, yum, urpmi, etc...) as they might conflict.
So, one of the less error prone way to deal with it is to have separate Python installs in your system - leave the python that came with the system for system scripts and such - on this python, make use of packages installed by your package manager only. And install other versions of Python (or even the same), to be run with "virtualenv"s - on these other install you install things with pip/setuptools only.
(And even if one opt to live boldly and not use virtualenvs, installing another python version on the same prefix (/usr, and even /usr/local) than your system's Python is a source to confusing errors and conflicts).
Note that the Debian - and Ubuntu - systems devised a way to run parallel official Python's in /usr, and to have apt-get to install Python packages to both Python versions at once. This mostly works, but they mess with Python's default directory hierarchy, and some applications fail to use Python in this way. (It is also a mess to find the module files themselves in a Debian or Ubuntu). So the above method apply as a recommendation even if your system do have more than one version of Python available on apt-get.
In short, once you have compiled your desired version of Python, do this:
use your system's package manager to install "python-setuptools" and "python-virtualenv" (not sure if these are the actual package names).
Use virtualenv to create an environment from which you will use your different Python version
Activate your virtualenv, and install Python packages using pip on it.
Virtualenv does feature a "--help" switch to help you, but you basically do:
$ virtualenv -p <path-to-python-interpreter> <environment-dir>
$ source <environment-dir>/bin/activate
And there you are - all things using Python will "see" the interpreter in the virtualenv, due to environment variables set.
ubuntu 10.04 doesn't have a python2.7 package. You have to build 2.7 yourself. I did read an article about ubuntu releasing a python2.7 package when 12.04 came out but i'm not sure what the repository location is.
http://eli.thegreenplace.net/2011/10/10/installing-python-2-7-on-ubuntu/
or:
sudo add-apt-repository ppa:fkrull/deadsnakes
sudo apt-get update
sudo apt-get install python2.7
https://askubuntu.com/questions/101591/install-python-2-7-2-on-ubuntu-10-04-64-bit
this question has lots of answers online.
pyenv
https://github.com/pyenv/pyenv
Pyenv allows you to manage multiple Python versions without sudo for a single user, much like Node.js NVM and Ruby RVM.
Install Pyenv:
curl https://pyenv.run | bash
Then add to your .bashrc:
export PATH="${HOME}/.pyenv/bin:$PATH"
eval "$(pyenv init -)"
eval "$(pyenv virtualenv-init -)"
Find Python version to install:
pyenv install --list
Install the python version you want:
# Increase the chances that the build will have all dependencies.
# https://github.com/pyenv/pyenv/wiki/Common-build-problems
sudo apt build-dep python3
sudo apt-get install -y make build-essential libssl-dev zlib1g-dev libbz2-dev \
libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev libncursesw5-dev \
xz-utils tk-dev libffi-dev liblzma-dev python-openssl git
# Build and install a Python version from source.
pyenv install 3.8.0
List available Python versions:
pyenv versions
We now have:
* system (set by /home/cirsan01/.pyenv/version)
3.8.0
Select a different python version:
pyenv global 3.8.0
python --version
python3 --version
Both output:
Python 3.8.0
We can now proceed to install and use packages normally:
pip install cowsay
python -c 'import cowsay; cowsay.tux("Python is fun")'
cowsay 'hello'
We can confirm that everything is locally installed in our clean environemnt with:
python -c 'import cowsay; print(cowsay.__file__)'
gives:
/home/ciro/.pyenv/versions/3.8.0/lib/python3.8/site-packages/cowsay/__init__.py
and:
which cowsay
gives:
/home/ciro/.pyenv/shims/cowsay
and:
which python
gives:
/home/ciro/.pyenv/shims/python
Per project usage
In the previous section, we saw how to use pyenv in a global setup.
However, what you usually want is to set a specific python and package version on a per-project basis. This is how to do it.
First install your desired Python version as before.
Then, from inside your project directory, set the desired python version with:
pyenv local 3.8.0
which creates a file .python-version containing the version string.
And now let's install a package locally just for our project: TODO: there is no nice way it seems: Pyenv choose virtualenv directory
Now, when someone wants to use your project, they will do:
pyenv local
which sets the Python version to the correct one.
Related threads:
https://askubuntu.com/questions/682869/how-do-i-install-a-different-python-version-using-apt-get
https://unix.stackexchange.com/questions/9711/what-is-the-proper-way-to-manage-multiple-python-versions
apt-get install for different python versions
Tested on Ubuntu 18.04, pyenv 1.2.15.
I'm using Python 2.7.2 on Ubuntu 11.10. I got this error when importing the bz2 module:
ImportError: No module named bz2
I thought the bz2 module is supposed to come with Python 2.7. How can I fix this problem?
EDIT: I think I previously installed Python 2.7.2 by compiling from source. Probably at that point I didn't have libbz2-dev and so the bz2 module is not installed. Now, I'm hoping to install Python2.7 through
sudo apt-get install python2.7
But it will say it's already installed. Is there a way to uninstall the previous Python2.7 installation and reinstall?
I meet the same problem, here's my solution.
The reason of import error is while you are building python, system couldn't find the bz2 headers and skipped building bz2 module.
Install them on Ubuntu/Debian:
sudo apt-get install libbz2-dev
Fedora:
sudo yum install bzip2-devel
and then rebuild python
comes from another answer
#birryree's answer helps to back to the system's original python.
Okay, this is much easier to understand in answer form, so I'll move what I would write in my comment to this answer.
Luckily for you, you didn't overwrite the system version of python, as Ubuntu 11.10 comes with 2.7.2 preinstalled.
Your python binaries (python and python2.7) are located in /usr/local/bin, which is a directory where user-specific stuff is usually installed. This is fine, it means your system python is still there.
First, just try to run the system python. Type this from the command line:
/usr/bin/python -c "import bz2; print bz2.__doc__"
This should print out something like this:
λ > /usr/bin/python -c "import bz2; print bz2.__doc__"
The python bz2 module provides a comprehensive interface for
the bz2 compression library. It implements a complete file
interface, one shot (de)compression functions, and types for
sequential (de)compression.
If so, means you're fine.
So you just have to fix your PATH, which tells the shell where to find commands. /usr/local/bin is going to have priority over /usr/local, so there are some ways to fix this, in order of difficulty/annoyance/altering your system:
Remove the symlink python from /usr/local/bin
This will make it so that when you type python, it should go back to executing /usr/bin/python, which is an alias for the system's python 2.7.2.
sudo rm /usr/local/bin/python
Move /usr/bin to have higher precedence in the PATH
Might not be desirable if you already have stuff in /usr/local/bin that should have precedence over /usr/bin, but I'm adding this for completeness.
In your shell profile (not sure what Ubuntu's default is, but I'm using ~/.bash_profile, you can do this:
export PATH=/usr/bin:$PATH
Remove your python install
This is extreme and the first option I presented should be your first option.
Do you really need your own version of Python? If you want isolated python environments you probably really want virtualenv. You can probably remove yours unless there's a reason not to.
It's going to be a little annoying though, but basically:
Remove the python and python2.7 and pythonw and pythonw2.7 commands from /usr/local/bin.
Remove /usr/local/lib/python/2.7.2
This part is not complete because I forget what else there is.
In case, you must be used python2.7, you should run: (Centos 6.4)
sudo cp /usr/lib64/python2.6/lib-dynload/bz2.so /usr/local/lib/python2.7/
Maybe it will helps someone:
apt-get install libbz2-dev # for bz2
apt-get install libssl-dev # for _ssl
apt-get install libsqlite3-dev # for sqlite
apt-get install libreadline6-dev # for readline, _curses, _curses_panel
For Ubuntu/Debian:
sudo apt-get install libbz2-dev
For Fedora:
sudo yum install bzip2-devel
And then recompile the python and install it.
matocnhoi's answer works for me in centOS
sudo cp /usr/lib64/python2.6/lib-dynload/bz2.so /usr/local/lib/python2.7/
and I used virtualenv, so the command is
sudo cp /usr/lib64/python2.6/lib-dynload/bz2.so ../../../env/lib/python2.7/
I used a symlink between /usr/lib64/python2.6/lib-dynload/bz2.so /usr/local/lib/python2.7/lib-dynload/
Worked fine for me...
Make sure you bz2 installed, run sudo yum install bzip2-devel.
Centos 6
sudo cp /usr/lib64/python2.6/lib-dynload/bz2.so /python_install_path/lib/python2.7
Centos 7
sudo cp /usr/lib64/python2.7/lib-dynload/bz2.so /python_install_path/lib/python2.7
python_install_path usually is /usr/local/lib/python2.7/, you need replace that if you install python in a another path.
If your bz2 in /usr/lib64/python2.7/lib-dynload/ is named as: "bz2.x86_64-linux-gnu.so", remember to rename it to bz2.so when copying it to your path or it may not be correctly sourced:
cp /usr/lib64/python2.6/lib-dynload/bz2.x86_64-linux-gnu.so /python_install_path/lib/python2.7/bz2.so
I had the same problem with Python 2.17.15 and pyenv on Ubuntu. System python from /usr/bin/python worked fine. In my case it helped to install libbz2-dev and then to reinstall python 2.7.15:
sudo apt-get install libbz2-dev
pyenv uninstall 2.7.15
pyenv install 2.7.15