Python websockets installation is failed on fedora linux

Python websockets installation is failed on fedora linux

Python websockets installation is failed due to missing module named pathlib and also raised the exception that websockets requires Python >=3.4 but python 3.6 is already installed on fedora 26.

$ sudo pip install websockets
WARNING: Running pip install with root privileges is generally not a good idea. Try `pip install --user` instead.
Collecting websockets
  Downloading https://files.pythonhosted.org/packages/4b/c6/026da2eeed75a49dd0b72a0c7ed6ee5cb2943e396ca9753eabff7359b27b/websockets-5.0.1.tar.gz (68kB)
	100% |████████████████████████████████| 71kB 617kB/s
	Complete output from command python setup.py egg_info:
	Traceback (most recent call last):
  	File "", line 1, in 
  	File "/tmp/pip-build-aipVrb/websockets/setup.py", line 1, in 
    	import pathlib
	ImportError: No module named pathlib
    
	----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-aipVrb/websockets/
[user@localhost ~]$ sudo pip install pathlib
WARNING: Running pip install with root privileges is generally not a good idea. Try `pip install --user` instead.
Collecting pathlib
  Downloading https://files.pythonhosted.org/packages/ac/aa/9b065a76b9af472437a0059f77e8f962fe350438b927cb80184c32f075eb/pathlib-1.0.1.tar.gz (49kB)
	100% |████████████████████████████████| 51kB 468kB/s
Installing collected packages: pathlib
  Running setup.py install for pathlib ... done
Successfully installed pathlib-1.0.1

$ sudo pip install websockets
Collecting websockets
  Using cached https://files.pythonhosted.org/packages/4b/c6/026da2eeed75a49dd0b72a0c7ed6ee5cb2943e396ca9753eabff7359b27b/websockets-5.0.1.tar.gz
	Complete output from command python setup.py egg_info:
	Traceback (most recent call last):
  	File "", line 1, in 
  	File "/tmp/pip-install-bm0uem/websockets/setup.py", line 24, in 
    	raise Exception("websockets requires Python >= 3.4.")
	Exception: websockets requires Python >= 3.4.
    
	----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-install-bm0uem/websockets/

How to resolve websockets installation issue on fedora 27 ?

try installing websockets using pip3

sudo pip3 install websockets

sudo: pip3: command not found

If pip3 installation is failed, then try to install python3-pip

$ sudo dnf install python3-pip

if pip3 is installed, then python websockets can be installed using pip3 command.

try to reinstall pip3 if getting below error 'already installed,

$ sudo dnf install python3-pip
Last metadata expiration check: 0:59:49 ago on Wed 08 Aug 2018 09:52:01 AM IST.
Package python3-pip-9.0.3-2.fc28.noarch is already installed, skipping.
Dependencies resolved.
Nothing to do.
Complete!
$ pip3 --help
-bash: pip3: command not found

How to reinstall pip3 on fedora 27 ?

$ sudo dnf reinstall python3-pip

$ sudo dnf reinstall python3-pip
Last metadata expiration check: 1:00:25 ago on Wed 08 Aug 2018 09:52:01 AM IST.
Dependencies resolved.
==============================================================================================================================================================
 Package                            	Arch                          	Version                                	Repository                      	Size
==============================================================================================================================================================
Reinstalling:
 python3-pip                        	noarch                        	9.0.3-2.fc28                           	updates                        	2.0 M

Transaction Summary
==============================================================================================================================================================

Total download size: 2.0 M
Is this ok [y/N]: y
Downloading Packages:
python3-pip-9.0.3-2.fc28.noarch.rpm                                                                                       	641 kB/s | 2.0 MB 	00:03    
--------------------------------------------------------------------------------------------------------------------------------------------------------------
Total                                                                                                                     	457 kB/s | 2.0 MB 	00:04	 
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing    	:                                                                                                                                  	1/1
  Reinstalling 	: python3-pip-9.0.3-2.fc28.noarch                                                                                                  	1/2
  Erasing      	: python3-pip-9.0.3-2.fc28.noarch                                                                                                  	2/2
  Running scriptlet: python3-pip-9.0.3-2.fc28.noarch                                                                                                  	2/2
  Verifying    	: python3-pip-9.0.3-2.fc28.noarch                                                                                                  	1/2
  Verifying    	: python3-pip-9.0.3-2.fc28.noarch                                                                                                  	2/2

Reinstalled:
  python3-pip.noarch 9.0.3-2.fc28                                                                                                                        	 

Complete!

How to install python websockets on fedora using pip3

$ sudo pip3 install websockets

Output:

WARNING: Running pip install with root privileges is generally not a good idea. Try `pip3 install --user` instead.
Collecting websockets
  Cache entry deserialization failed, entry ignored
  Downloading https://files.pythonhosted.org/packages/5c/fe/99aeaf97985585baefca8d56125ec828ef5549276324ec319b63a4da686d/websockets-6.0-cp36-cp36m-manylinux1_x86_64.whl (88kB)
	100% |████████████████████████████████| 92kB 829kB/s
Installing collected packages: websockets
Successfully installed websockets-6.0

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