pip broken after update - syntax error

[Domserge]

• Pip version: 9.0.1
• Python version: 2.7 - 3.2
• Operating system: Raspberry

I have a syntax error when i would to run pip after upgrade

// I have a syntax error when i would to run pip after upgrade
You are using pip version 7.1.0, however version 9.0.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

i made an upgrade of pip: pip install --upgrade pip

After he doesn't work

// Traceback (most recent call last):
  File "/usr/local/bin/pip", line 9, in <module>
    load_entry_point('pip==9.0.1', 'console_scripts', 'pip')()
  File "/usr/local/lib/python3.2/dist-packages/setuptools-18.1-py3.2.egg/pkg_resources/__init__.py", line 558, in load_entry_point
  File "/usr/local/lib/python3.2/dist-packages/setuptools-18.1-py3.2.egg/pkg_resources/__init__.py", line 2682, in load_entry_point
  File "/usr/local/lib/python3.2/dist-packages/setuptools-18.1-py3.2.egg/pkg_resources/__init__.py", line 2355, in load
  File "/usr/local/lib/python3.2/dist-packages/setuptools-18.1-py3.2.egg/pkg_resources/__init__.py", line 2361, in resolve
  File "/usr/local/lib/python3.2/dist-packages/pip/__init__.py", line 21, in <module>
    from pip._vendor.requests.packages.urllib3.exceptions import DependencyWarning
  File "/usr/local/lib/python3.2/dist-packages/pip/_vendor/requests/__init__.py", line 66, in <module>
    from .models import Request, Response, PreparedRequest
  File "/usr/local/lib/python3.2/dist-packages/pip/_vendor/requests/models.py", line 856
    http_error_msg = u'%s Client Error: %s for url: %s' % (self.status_code, reason, self.url)
                                                      ^
SyntaxError: invalid syntax

[RonnyPfannschmidt]

as far as i can tell you ran the pip update on python3.2 on the system level

a) pip no longer supports python 3.2 as python 3.2 is end of life since a while now
b) you should never update the system level pip using pip since its managed by the package manager

[xavfernandez]

Yup, pip does not support 3.2 anymore and this breaks horribly, sorry about that.
This is a duplicate of closed #3390 and hopefully python 3.3 should be better handled with pip 9+.
To reinstall a 3.2 compatible version of pip, you can use: https://bootstrap.pypa.io/3.2/get-pip.py (cf https://pip.pypa.io/en/stable/installing/#installing-with-get-pip-py).