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Python 3.5 pip version conflict with python 2.7

I am trying to install a software using pip install and my python and pip versions are 3.5. but when I run sudo pip install -e . I get the following error.
Traceback (most recent call last):
File "/usr/local/bin/pip3.5", line 5, in <module>
from pkg_resources import load_entry_point
File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.14-py2.7.egg/pkg_resources.py", line 2675, in <module>
parse_requirements(__requires__), Environment()
File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.14-py2.7.egg/pkg_resources.py", line 552, in resolve
raise DistributionNotFound(req)
pkg_resources.DistributionNotFound: pip==8.1.0
Why Do I get an error with python 2.7 and please some one could sortout my issue.

Your pip version and python versions are separate. It looks like your package requires exactly pip 8.1.0. You have to either upgrade/downgrade to that version first, or modify the software to work with whichever pip you have available.
Also, it may be easier to install the software in a virtual environment rather than system/global one. Changing the system version of pip may break either current apps, or the future pip package updates.

PIP raising SyntaxError from command line

I have attempted to install PIP using the following commands:
sudo yum install python-setuptools
sudo easy_install pip
sudo pip install supervisor
As it installed, a number of syntax errors were raised from the second and third lines. The errors are fairly similar to that below, so for brevity I'll omit here, but let me know if having those will help. There are a lot.
When I run any pip command, I get SyntaxErrors:
# pip
Traceback (most recent call last):
File "/usr/bin/pip", line 7, in ?
sys.exit(
File "/usr/lib/python2.4/site-packages/pkg_resources.py", line 236, in load_entry_point
return get_distribution(dist).load_entry_point(group, name)
File "/usr/lib/python2.4/site-packages/pkg_resources.py", line 2097, in load_entry_point
return ep.load()
File "/usr/lib/python2.4/site-packages/pkg_resources.py", line 1830, in load
entry = __import__(self.module_name, globals(),globals(), ['__name__'])
File "/usr/lib/python2.4/site-packages/pip-8.1.1-py2.4.egg/pip/__init__.py", line 208
except PipError as exc:
^
SyntaxError: invalid syntax
I am running CentOS release 5.11 (Final) and Python 2.4.3 (#1, Jan 9 2013, 06:47:03). Note, these are managed by WHM.
I have re-installed PIP using python get-pip.py --ignore-installed, but get the same result.
Is this a Python version conflict? Is my version of Python too old and the syntax in the PIP scripts different? What should I do?

except PipError as exc: isn't a valid Python 2.4 syntax (it should be except PipError, exc).
I don't think pip is meant to work with Python 2.4. Try this question for installing PIP 1.1, which is compatible with that version of Python:
Installing Pip on 2.4

As the above answer describes, you've run into version conflicts between pip and python. You're using an old version of CentOS with an old version of python 2, which makes things worse.
Updating the system environment with 'sudo pip' has a very high risk of creating version problems with system utilities. You can, for instance, break yum, and be forced to update your system with rpm commands. You need to install a recent version of python (preferably python 3) as an alternate install in /usr/local/bin or in a user directory.
Then I highly recommend using a virtual environment (https://virtualenv.pypa.io/en/latest/, or a built-in capability in python 3.5). That lets you set up your own python executable, libraries, and installed packages any way you like, without risk of affecting your entire system. It's a minor setup pain, but it makes most of the problems just vanish.

PIP --upgrade not working Python3.4.4

I've looked at a number of posts on this and nothing seems to fix it. I initally started out on Python 3.5, heard that there were several unresolved issues with pip and so I uninstalled and reinstalled Python 3.4.4 -
I want to use pyautogui for a work task, but when I try to install pyautogui directly after Python3.4.4 installation it tells me the PIL Module can't be found. I read in another article to install 3.4.4 and update pip, then install pyautogui. Cool, so I installed 3.4.4, I needed to upgrade pip. So I entered in
Scripts\pip.exe install --upgrade pip
from the command line in the root folder. Every time I get this
Exception:
Traceback (most recent call last):
File "h:\python34\lib\shutil.py", line 527, in move
os.rename(src, real_dst)
PermissionError: [WinError 32] The process cannot access the file because it is
being used by another process: 'h:\\python34\\scripts\\pip.exe' -> 'C:\\Users\\z
jf\\AppData\\Local\\Temp\\pip-qo75adq9-uninstall\\python34\\scripts\\pip.exe'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "h:\python34\lib\site-packages\pip\basecommand.py", line 211, in main
File "h:\python34\lib\site-packages\pip\commands\install.py", line 311, in run
File "h:\python34\lib\site-packages\pip\req\req_set.py", line 640, in install
File "h:\python34\lib\site-packages\pip\req\req_install.py", line 716, in unin
stall
File "h:\python34\lib\site-packages\pip\req\req_uninstall.py", line 125, in re
move
File "h:\python34\lib\site-packages\pip\utils\__init__.py", line 315, in renam
es
File "h:\python34\lib\shutil.py", line 540, in move
os.unlink(src)
PermissionError: [WinError 32] The process cannot access the file because it is
being used by another process: 'h:\\python34\\scripts\\pip.exe'
Thing is, nothing is running in that folder. I don't have windows explorer open to it, I don't have anything accessing any files in there, and I'm obviously running it from an upper level directory using the command line. So I have no idea why it's saying that pip.exe is being used by another process. The only process it's being run by is itself and if that's the issue, then how in the world are you supposed to upgrade it?
**EDIT: ** Per the accepted answer, in order to get PIP to update I used the command
python -m pip install -U pip
Once that worked I tried to install pyautogui yet again. It still said that PIL module could not be found. PIL is the Python Image Library. I installed it using
python -m pip install image
And once that worked I then installed pyautogui like so
python -m pip install pyautogui

To upgrade pip on windows google "upgrade pip on windows" or alternately run this in a command prompt:
python -m pip install -U pip
This is a known issue on windows where an executable can't be overwritten while it's running. Sorry no links handy but it should be easy to find more details.

Problem: You are using pip version 18.1, however version 19.0.1 is available. You should consider upgrading via the ‘python -m pip install –upgrade pip’ command.
Solution: In order to upgrade PIP in Windows, you’ll need to open the Windows Command Prompt, and then type/copy the command below. Note that the following method would only work if you already added Python to Windows path. Don’t worry if you don’t know what it means, as I’ll show the full steps to upgrade pip in windows in the next section.
python -m pip install --upgrade pip

python can't find numpy

I was trying to follow the instruction from this link :http://www.thisisthegreenroom.com/2011/installing-python-numpy-scipy-matplotlib-and-ipython-on-lion/
However, it seems my python can not find the Numpy, Scipy and everything I install using pip.
Right now, when I type which python, it shows /usr/local/bin/python.
However, when I type
pip install numpy
it shows
Requirement already satisfied (use --upgrade to upgrade): numpy in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python.
Thus it seems they are in different directory, and probably I installed numpy previously, which makes pip keep telling me they are installed. I wonder is there any way around that ?
update, I have tried to import it.
import numpy
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named numpy
I have also tried to uninstall the numpy and install it again. However, when I uninstall it. It still gives me error.
applematoMacBook-Air:~ apple$ pip uninstall numpy
DEPRECATION: Uninstalling a distutils installed project (numpy) has been deprecated and will be removed in a future version. This is due to the fact that uninstalling a distutils project will only partially uninstall the project.
Uninstalling numpy-1.8.0rc1:
/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/numpy-1.8.0rc1-py2.7.egg-info
Proceed (y/n)? y
Exception:
Traceback (most recent call last):
File "/usr/local/lib/python2.7/site-packages/pip-6.1.1-py2.7.egg/pip/basecommand.py", line 246, in main
status = self.run(options, args)
File "/usr/local/lib/python2.7/site-packages/pip-6.1.1-py2.7.egg/pip/commands/uninstall.py", line 70, in run
requirement_set.uninstall(auto_confirm=options.yes)
File "/usr/local/lib/python2.7/site-packages/pip-6.1.1-py2.7.egg/pip/req/req_set.py", line 274, in uninstall
req.uninstall(auto_confirm=auto_confirm)
File "/usr/local/lib/python2.7/site-packages/pip-6.1.1-py2.7.egg/pip/req/req_install.py", line 730, in uninstall
paths_to_remove.remove(auto_confirm)
File "/usr/local/lib/python2.7/site-packages/pip-6.1.1-py2.7.egg/pip/req/req_uninstall.py", line 126, in remove
renames(path, new_path)
File "/usr/local/lib/python2.7/site-packages/pip-6.1.1-py2.7.egg/pip/utils/__init__.py", line 292, in renames
shutil.move(old, new)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 302, in move
os.unlink(src)
OSError: [Errno 13] Permission denied: '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/numpy-1.8.0rc1-py2.7.egg-info'

Seems like the version of pip you are using is using the default mac system-wide python interpreter /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python instead of the one installed in /usr/local/bin.
I've pretty much experienced the same issues until I started using homebrew. I'd recommend to have a look at this page on brew and python. You'd might need to remove pip and reinstall it from brew. Btw, using brew, there's no need for sudo.

try: pip uninstall numpy
and then: pip install numpy
...and try it with sudo:
sudo pip install numpy

first, you should use pip list to check out have you installed numpy .
if you already installed, check out your program IDE whether the pycharm, and check the pycharm interpreter does the local interpreter or virtual interpreter. if the interpreter is virtual, you should change to local. if it works, you can create the new project with select the local interpreter.
more detail: https://www.jianshu.com/p/9c3507cca2b9
in my problem, i can't update scikit-learn with pip install -U scikit-learn, and occur the problem
Cannot uninstall 'scikit-learn'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.
it occured in your error too. so, i find your problem.
and i try the commod pip install -U --ignore-installed scikit-learn, and it solve my problem.

pip3 says "resolve pkg_resources.DistributionNotFound: pip==1.3.1"

On OSX 10.7.5, I'm trying to use the pip3 command to install packages to python3. When I try, I get this error message:
zak$ pip3
Traceback (most recent call last):
File "/usr/local/Cellar/python3/3.3.2/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/setuptools-1.0-py3.3.egg/pkg_resources.py", line 2793, in <module>
File "/usr/local/Cellar/python3/3.3.2/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/setuptools-1.0-py3.3.egg/pkg_resources.py", line 673, in require
File "/usr/local/Cellar/python3/3.3.2/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/setuptools-1.0-py3.3.egg/pkg_resources.py", line 580, in resolve
pkg_resources.VersionConflict: (pip 1.4.1 (/usr/local/lib/python3.3/site-packages), Requirement.parse('pip==1.3.1'))
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/local/bin/pip3", line 5, in <module>
from pkg_resources import load_entry_point
File "<frozen importlib._bootstrap>", line 1567, in _find_and_load
File "<frozen importlib._bootstrap>", line 1534, in _find_and_load_unlocked
File "/usr/local/Cellar/python3/3.3.2/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/setuptools-1.0-py3.3.egg/pkg_resources.py", line 2797, in <module>
File "/usr/local/Cellar/python3/3.3.2/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/setuptools-1.0-py3.3.egg/pkg_resources.py", line 576, in resolve
pkg_resources.DistributionNotFound: pip==1.3.1
It looks like setuptools is demanding an old version of pip (I have 1.4.1 installed), but why? How can I fix this?

The problem appears to be that you have two different Python 3.3 installations, and a shared site-packages directory.* And the tool you run as pip3 is from pip 1.3.1, but the modules it uses to do its work come from pip 1.4.1.
The easiest way to solve this, unless you actually need both Python 3.3 installations, is to get rid of both of them completely, then reinstall the one you want.
The following should work (possibly with sudo for some of the commands—or using Finder and letting it tell you whether you need to authenticate).
Note that this will also partially or completely remove any other third-party Python versions (e.g., a python.org 2.7.5), which I don't think is a problem for you, but could be for future readers.
You might want to make a list of all installed packages before uninstalling anything. (I usually do this in the hackiest way possible: fire up ipython, and let it tab-complete an import statement…)
Finally, some of these details will be different for any future readers with similar problems, but the basic ideas should be the same.
brew uninstall python3
rm -rf /Library/Frameworks/Python.framework
rm -rf /usr/local/lib/python*
rm -rf /usr/local/share/python*
Find where in ~/.bash_profile (or ~/.profile or elsewhere) you add the Python paths to your PATH. You may have /usr/local/share/python3 and/or something inside the Python.framework or Cellar/python3. Scrap all that you find.
Fire up a new shell in Terminal.app.
brew doctor, and fix anything that it complains about that seems potentially relevant (the non-Homebrew MacFUSE stuff is fine as-is; the brew prune suggestion is probably worth doing, but doesn't matter here), and run it again to make sure.
brew install python3.
pip3 to reinstall any packages you deleted that you need again.
* Details:
Homebrew Python 3.3 is installed in /usr/local/Cellar/python3/3.3.2/, with various things symlinked into /usr/local/bin and its siblings, and possibly into /Library somewhere.
Another Python 3.3, possibly from the python.org installer, is installed in /Library/Frameworks/Python.framework/Versions/3.3/, with various things possibly symlinked into /usr/local/bin or otherwise added to your PATH.
Both probably include /usr/local/lib/python3.3 in their site-packages search.

After running
pip install --upgrade setuptools
I was able to fix it. But this may not be true for everyone for I am still learning Python.

It seems this was caused by a broken Python installation, I was able to fix it by reinstalling Python with Homebrew.
brew reinstall python3