Python – Getting error while using fuzzywuzzy: UserWarning: Using slow pure-python SequenceMatcher. Install python-Levenshtein to remove this warning

I am getting below error. Is there any way to fix it without installing python-Levenshtein and if not then how to install python-Levenshtein on linux.

UserWarning: Using slow pure-python SequenceMatcher. Install python-Levenshtein to remove this warning
  warnings.warn
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Python –  portable way to get the current username in Python

Look at getpass module
import getpass
getpass.getuser()
'kostya'
Availability: Unix, Windows
p.s. Per comment below "this function looks at the values of various environment variables to determine the user name. Therefore, this function should not be relied on for access control purposes (or possibly any other purpose, since it allows any user to impersonate any other)."
    
Python – Dealing with multiple Python versions and PIP

The current recommendation is to use python -m pip, where python is the version of Python you would like to use. This is the recommendation because it works across all versions of Python, and in all forms of virtualenv. For example:
# The system default python:
$ python -m pip install fish
# A virtualenv's python:
$ .env/bin/python -m pip install fish
# A specific version of python:
$ python-3.6 -m pip install fish
Previous answer, left for posterity:
Since version 0.8, Pip supports pip-{version}. You can use it the same as easy_install-{version}:
$ pip-2.5 install myfoopackage
$ pip-2.6 install otherpackage
$ pip-2.7 install mybarpackage
EDIT: pip changed its schema to use pipVERSION instead of pip-VERSION in version 1.5. You should use the following if you have pip >= 1.5:
$ pip2.6 install otherpackage
$ pip2.7 install mybarpackage
Check https://github.com/pypa/pip/pull/1053 for more details
References:
https://github.com/pypa/pip/issues/200
http://www.pip-installer.org/docs/pip/en/0.8.3/news.html#id4
            
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