Let's see one simple example ...
>>> my_list = [1,2,3,22,33,11,33,'a','b','c','a']
>>> my_list = list(set(my_list))
>>> print my_list
['a', 1, 2, 3, 33, 11, 'c', 'b', 22]
As you can see the 33 and a items is removed.
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>>> my_list = [1,2,3,22,33,11,33,'a','b','c','a']
>>> my_list = list(set(my_list))
>>> print my_list
['a', 1, 2, 3, 33, 11, 'c', 'b', 22]
You can use python google module to start searching anything using this module.
First you need to install the python module using pip.
# pip install google
Downloading/unpacking google
Downloading google-1.05.zip
Running setup.py egg_info for package google
Requirement already satisfied (use --upgrade to upgrade): beautifulsoup4
in /usr/local/lib/python2.7/dist-packages (from google)
Installing collected packages: google
Running setup.py install for google
changing mode of build/scripts-2.7/google.py from 644 to 755
changing mode of /usr/local/bin/google.py to 755
Successfully installed google
Cleaning up...
As you can see the next step is to upgrade: beautifulsoup4 ...
# pip install --upgrade beautifulsoup4
Downloading/unpacking beautifulsoup4 from https://pypi.python.org/packages/
source/b/beautifulsoup4/beautifulsoup4-4.3.2.tar.gz#md5=
b8d157a204d56512a4cc196e53e7d8ee
Downloading beautifulsoup4-4.3.2.tar.gz (143Kb): 143Kb downloaded
Running setup.py egg_info for package beautifulsoup4
Installing collected packages: beautifulsoup4
Found existing installation: beautifulsoup4 4.3.1
Uninstalling beautifulsoup4:
Successfully uninstalled beautifulsoup4
Running setup.py install for beautifulsoup4
Successfully installed beautifulsoup4
Cleaning up...
Let's make a simple script to find linux word using google.com ...
>>> from google import search
>>> for url in search('linux', tld='com', lang='en', stop=2):
... print(url)
...
http://en.wikipedia.org/wiki/Linux
http://en.wikipedia.org/wiki/Unix-like
http://en.wikipedia.org/wiki/Linus_Torvalds
http://en.wikipedia.org/wiki/Linux_kernel
http://en.wikipedia.org/wiki/List_of_Linux_distributions
...
If you want to know more about google search function then use this:
>>> help(google.search)
Help on function search in module google:
search(query, tld='com', lang='en', num=10, start=0, stop=None, pause=2.0)
Search the given query string using Google.
...
... and this is all.
$ python
Python 2.7.3 (default, Jan 2 2013, 16:53:07)
[GCC 4.7.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import sunpy
>>> from sunpy.net.helioviewer import HelioviewerClient
>>>
>>> hv = HelioviewerClient()
>>> datasources = hv.get_data_sources()
>>>
>>> # print a list of datasources and their associated ids
... for observatory, instruments in datasources.items():
... for inst, detectors in instruments.items():
... for det, measurements in detectors.items():
... for meas, params in measurements.items():
... print("%s %s: %d" % (observatory, params['nickname'], params['sourceId']))
...
Yohkoh SXT AlMgMn: 33
Yohkoh SXT thin-Al: 34
Yohkoh SXT white-light: 35
PROBA2 SWAP 174: 32
STEREO_A EUVI-A 195: 21
STEREO_A EUVI-A 304: 23
STEREO_A EUVI-A 284: 22
STEREO_A EUVI-A 171: 20
STEREO_A COR2-A: 29
STEREO_A COR1-A: 28
STEREO_B EUVI-B 195: 25
STEREO_B EUVI-B 304: 27
STEREO_B EUVI-B 284: 26
STEREO_B EUVI-B 171: 24
STEREO_B COR2-B: 31
STEREO_B COR1-B: 30
SOHO MDI Mag: 6
SOHO MDI Int: 7
SOHO EIT 195: 1
SOHO EIT 304: 3
SOHO EIT 284: 2
SOHO EIT 171: 0
SOHO LASCO C3: 5
SOHO LASCO C2: 4
SDO AIA 1700: 16
SDO AIA 211: 12
SDO AIA 335: 14
SDO AIA 1600: 15
SDO AIA 304: 13
SDO AIA 193: 11
SDO AIA 131: 9
SDO AIA 4500: 17
SDO AIA 94: 8
SDO AIA 171: 10
SDO HMI Mag: 19
SDO HMI Int: 18
This show me all instruments from sunpy. You see all instruments online here >>> hv.download_png('2013/11/29 00:15:00', 50, "[SOHO,LASCO,C3,white-light,1,100]", x0=0, y0=0, width=768, height=768)
The settings are : date and time , the image resolution (arcseconds per pixel), the SOHO LASCO C3 instrument with the layer visibility , center points and size