The new release Python 3.5.0a4 - tutorial.

I install the Windows amd64 web-based installer. This allow me to use the windows gui to make all settings.
You also need some administrator privileges for C Runtime ...

Some notes about this installation process:

• If you have previously installed Python 3.5.0a1, you may need to manually uninstall it.
• If installing Python 3.5.0a4 as a non-privileged user, you may need to escalate to administrator privileges to install an update to your C runtime libraries.
• Python 3.5 now has an embeddable installer designed to be run as part of a larger application's installer for apps using or extending Python.There is now a third type of Windows installer for Python 3.5.

You can find your python files under \AppData\Local\Programs\Python\Python35.
The Python35 have python.exe, see:

Python 3.5.0a4 (v3.5.0a4:413e0e0004f4, Apr 19 2015, 18:01:47) [MSC v.1900 64 bit
 (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>

Let's see all defaul Python35 modules:

__future__          abc                 hmac                select
_ast                aifc                html                selectors
_bisect             antigravity         http                setuptools
_bootlocale         argparse            idlelib             shelve
_bz2                array               imaplib             shlex
_codecs             ast                 imghdr              shutil
_codecs_cn          asynchat            imp                 signal
_codecs_hk          asyncio             importlib           site
_codecs_iso2022     asyncore            inspect             smtpd
_codecs_jp          atexit              io                  smtplib
_codecs_kr          audioop             ipaddress           sndhdr
_codecs_tw          base64              itertools           socket
_collections        bdb                 json                socketserver
_collections_abc    binascii            keyword             sqlite3
_compat_pickle      binhex              lib2to3             sre_compile
_compression        bisect              linecache           sre_constant
_csv                builtins            locale              sre_parse
_ctypes             bz2                 logging             ssl
_ctypes_test        cProfile            lzma                stat
_datetime           calendar            macpath             statistics
_decimal            cgi                 macurl2path         string
_dummy_thread       cgitb               mailbox             stringprep
_elementtree        chunk               mailcap             struct
_functools          cmath               marshal             subprocess
_hashlib            cmd                 math                sunau
_heapq              code                mimetypes           symbol
_imp                codecs              mmap                symtable
_io                 codeop              modulefinder        sys
_json               collections         msilib              sysconfig
_locale             colorsys            msvcrt              tabnanny
_lsprof             compileall          multiprocessing     tarfile
_lzma               concurrent          netrc               telnetlib
_markerlib          configparser        nntplib             tempfile
_markupbase         contextlib          nt                  test
_md5                copy                ntpath              textwrap
_msi                copyreg             nturl2path          this
_multibytecodec     crypt               numbers             threading
_multiprocessing    csv                 opcode              time
_opcode             ctypes              operator            timeit
_operator           curses              optparse            tkinter
_osx_support        datetime            os                  token
_overlapped         dbm                 parser              tokenize
_pickle             decimal             pathlib             trace
_pydecimal          difflib             pdb                 traceback
_pyio               dis                 pickle              tracemalloc
_random             distutils           pickletools         tty
_sha1               doctest             pip                 turtle
_sha256             dummy_threading     pipes               turtledemo
_sha512             easy_install        pkg_resources       types
_signal             email               pkgutil             unicodedata
_sitebuiltins       encodings           platform            unittest
_socket             ensurepip           plistlib            urllib
_sqlite3            enum                poplib              uu
_sre                errno               posixpath           uuid
_ssl                faulthandler        pprint              venv
_stat               filecmp             profile             warnings
_string             fileinput           pstats              wave
_strptime           fnmatch             pty                 weakref
_struct             formatter           py_compile          webbrowser
_symtable           fractions           pyclbr              winreg
_testbuffer         ftplib              pydoc               winsound
_testcapi           functools           pydoc_data          wsgiref
_testimportmultiple gc                  pyexpat             xdrlib
_thread             genericpath         queue               xml
_threading_local    getopt              quopri              xmlrpc
_tkinter            getpass             random              xxsubtype
_tracemalloc        gettext             re                  zipapp
_warnings           glob                reprlib             zipfile
_weakref            gzip                rlcompleter         zipimport
_weakrefset         hashlib             runpy               zlib
_winapi             heapq               sched

Also the this version come with pip3.5 under Script folder to use pip solution.
You can run some demos with this \Python35>python.exe Tools\demo\.
The all download files come with this options:
Gzipped source tarball Source release 34667f07604352a4a1ef4651dcb7f870 19874914 SIG
XZ compressed source tarball Source release dd8d2dcb8c8b301d57228be896317612 14704088 SIG
Mac OS X 32-bit i386/PPC installer Mac OS X for Mac OS X 10.5 and later c648d4f3f02ce06d839e2b754e8382bc 25250926 SIG
Mac OS X 64-bit/32-bit installer Mac OS X for Mac OS X 10.6 and later d7321ddabc46927fd619a694c0d87086 23587943 SIG
Windows amd64 embeddable installer Windows b2c3001cd03d478293680f88beaf5218 6660944 SIG
Windows amd64 web-based installer Windows b2c3001cd03d478293680f88beaf5218 912024 SIG
Windows amd executable installer Windows 5ca6f1dcc56c66065d874420ae95ea23 29316824 SIG
Windows help file Windows d5434e2cf712ebdf11ede3b6cdb43a64 7581518 SIG
Windows x86 embeddable installer Windows 32f1d62bc4cad46e5bf3444d648e53f0 6068184 SIG
Windows x86 executable installer Windows a220359f4f6cefcc316504cccd3dc0fb 28459976 SIG
Windows x86 web-based installer Windows dd6712fe691f4212fb9e516541103721 886400 SIG
See more about this new release here.
You can see also the new beta python module with all issues.

Upgrading all packages with pip using python script.

Can be done under Windows OS with this python script :

C:\Python27>python.exe
Python 2.7.6 (default, Nov 10 2013, 19:24:24) [MSC v.1500 64 bit (AMD64)] on win
32
Type "help", "copyright", "credits" or "license" for more information.
>>> import pip
>>> from subprocess import call
>>>
>>> for dist in pip.get_installed_distributions():
...     call("pip install --upgrade " + dist.project_name, shell=True)
...
You are using pip version 6.0.8, however version 6.1.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
Requirement already up-to-date: appdirs in c:\python34\lib\site-packages
0
You are using pip version 6.0.8, however version 6.1.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
Collecting beautifulsoup4
  Using cached beautifulsoup4-4.3.2.tar.gz
...

The Windows will need to have the Script path folder into enviroment variables: C:\Python27\Scripts.
If you use Linux OS shell then you can use this :

pip freeze --local | grep -v '^\-e' | cut -d = -f 1  | xargs -n1 pip install -U

pip-Win the new GUI for python pip.

The pip-Win is a Python Package manager that is easy to install and let you to automatically installs python module using pip and virtualenv on Windows.
Features

• switch from one python interpreter (i.e. version) to another (including py and pypy)
• see all installed packages, and whether they are up-to-date
• install or upgrade a package, or upgrade pip itself
• create and delete virtual environments, and switch between them
• run the IDLE or another python script, with the selected interpreter

Also pip-Win is made available under the GNU Lesser General Public Licence.
You can try it from here.