I'm trying to install python3 on RHEL using the following steps:
yum search python3
Which returned No matches found for: python3
Followed by:
yum search python
None of the search results contained python3. What should I try next?
It is easy to install python manually (i.e. build from source):
Download (there may be newer releases on Python.org):
$ wget https://www.python.org/ftp/python/3.4.3/Python-3.4.3.tar.xz
Unzip
$ tar xf Python-3.*
$ cd Python-3.*
Prepare compilation
$ ./configure
Build
$ make
Install
$ make install
OR if you don't want to overwrite the python
executable (safer, at least on some distros yum
needs python
to be 2.x, such as for RHEL6) - you can install python3.*
as a concurrent instance to the system default with an altinstall
:
$ make altinstall
Now if you want an alternative installation directory, you can pass --prefix
to the configure
command.
Example: for 'installing' Python in /opt/local, just add --prefix=/opt/local
.
After the make install
step: In order to use your new Python installation, it could be, that you still have to add the [prefix]/bin to the $PATH
and [prefix]/lib to the $LD_LIBRARY_PATH
(depending of the --prefix
you passed)