python curl_get-pip.py Installing with get-pip.py

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curl https://bootstrap.pypa.io/get-pip.py > curl_get-pip.py
python curl_get-pip.py

https://pip.pypa.io/en/stable/installing/

curl https://bootstrap.pypa.io/get-pip.py > curl_get-pip.py

wuser@ubuntu:~$ pip install -U pip setuptools
The program 'pip' is currently not installed. You can install it by typing:
sudo apt install python-pip
wuser@ubuntu:~$ python get-pip.py
python: can't open file 'get-pip.py': [Errno 2] No such file or directory
wuser@ubuntu:~$ python https://bootstrap.pypa.io/get-pip.py
python: can't open file 'https://bootstrap.pypa.io/get-pip.py': [Errno 2] No such file or directory
wuser@ubuntu:~$ pwd
/home/wuser
wuser@ubuntu:~$ ll
total
drwxr-xr-x  wuser wuser  May   : ./
drwxr-xr-x  root  root   May   : ../
-rw-r--r--  wuser wuser   May   : .bash_logout
-rw-r--r--  wuser wuser  May   : .bashrc
drwx------  wuser wuser  May   : .cache/
-rw-rw-r--  wuser wuser     May   : .dbshell
-rw-------  wuser wuser     May   : .mongorc.js
-rw-r--r--  wuser wuser   May   : .profile
-rw-r--r--  wuser wuser     May   : .sudo_as_admin_successful
wuser@ubuntu:~$ curl https://bootstrap.pypa.io/get-pip.py > curl_get-pip.py
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
 1558k   1558k            196k        ::  :: --:--:--  331k
wuser@ubuntu:~$ ls
curl_get-pip.py
wuser@ubuntu:~$ python curl_get-pip.py
Collecting pip
  Downloading pip-9.0.-py2.py3-none-any.whl (.3MB)
    % |████████████████████████████████| .3MB 18kB/s
Collecting setuptools
  Downloading setuptools-35.0.-py2.py3-none-any.whl (390kB)
    % |████████████████████████████████| 399kB 59kB/s
Collecting wheel
  Downloading wheel-0.29.-py2.py3-none-any.whl (66kB)
    % |████████████████████████████████| 71kB 22kB/s
Collecting appdirs>=1.4. (from setuptools)
  Downloading appdirs-1.4.-py2.py3-none-any.whl
Collecting packaging>=16.8 (from setuptools)
  Downloading packaging-16.8-py2.py3-none-any.whl
Collecting six>=1.6. (from setuptools)
  Downloading six-1.10.-py2.py3-none-any.whl
Collecting pyparsing (from packaging>=16.8->setuptools)
  Downloading pyparsing-2.2.-py2.py3-none-any.whl (56kB)
    % |████████████████████████████████| 61kB 72kB/s
Installing collected packages: pip, appdirs, pyparsing, six, packaging, setuptools, wheel
Exception:
Traceback (most recent call last):
  File "/tmp/tmpO7xHXx/pip.zip/pip/basecommand.py", line , in main
    status = self.run(options, args)
  File "/tmp/tmpO7xHXx/pip.zip/pip/commands/install.py", line , in run
    prefix=options.prefix_path,
  File "/tmp/tmpO7xHXx/pip.zip/pip/req/req_set.py", line , in install
    **kwargs
  File "/tmp/tmpO7xHXx/pip.zip/pip/req/req_install.py", line , in install
    self.move_wheel_files(self.source_dir, root=root, prefix=prefix)
  File "/tmp/tmpO7xHXx/pip.zip/pip/req/req_install.py", line , in move_wheel_files
    isolated=self.isolated,
  File "/tmp/tmpO7xHXx/pip.zip/pip/wheel.py", line , in move_wheel_files
    clobber(source, lib_dir, True)
  File "/tmp/tmpO7xHXx/pip.zip/pip/wheel.py", line , in clobber
    ensure_dir(destdir)
  File "/tmp/tmpO7xHXx/pip.zip/pip/utils/__init__.py", line , in ensure_dir
    os.makedirs(path)
  File "/usr/lib/python2.7/os.py", line , in makedirs
    mkdir(name, mode)
OSError: [Errno ] Permission denied: '/usr/local/lib/python2.7/dist-packages/pip'
wuser@ubuntu:~$ sudo python curl_get-pip.py
The directory '/home/wuser/.cache/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/home/wuser/.cache/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Collecting pip
  Downloading pip-9.0.-py2.py3-none-any.whl (.3MB)
    % |████████████████████████████████| .3MB 18kB/s
Collecting setuptools
  Downloading setuptools-35.0.-py2.py3-none-any.whl (390kB)
    % |████████████████████████████████| 399kB 17kB/s
Collecting wheel
  Downloading wheel-0.29.-py2.py3-none-any.whl (66kB)
    % |████████████████████████████████| 71kB 10kB/s
Collecting appdirs>=1.4. (from setuptools)
  Downloading appdirs-1.4.-py2.py3-none-any.whl
Collecting packaging>=16.8 (from setuptools)
  Downloading packaging-16.8-py2.py3-none-any.whl
Collecting six>=1.6. (from setuptools)
  Downloading six-1.10.-py2.py3-none-any.whl
Collecting pyparsing (from packaging>=16.8->setuptools)
  Downloading pyparsing-2.2.-py2.py3-none-any.whl (56kB)
    % |████████████████████████████████| 61kB 17kB/s
Installing collected packages: pip, appdirs, pyparsing, six, packaging, setuptools, wheel
Successfully installed appdirs-1.4. packaging-16.8 pip-9.0. pyparsing-2.2. setuptools-35.0. six-1.10. wheel-0.29.
wuser@ubuntu:~$