Python Collection Usage Instance analysis

This example describes the Python collection usage. Share to everyone for your reference. The specific analysis is as follows:

# Sets is unordered collections of unique hashable elements# Python23 tested vegaseat 09mar2005# Python v2.4 has sets Built Inimport setsprint "List the functions within module ' sets ':" For Funk in Dir (sets): Print funk# Create an empty SE Tset1 = set ([]) # now load the Setfor K in range: Set1.add (k) print "\nloaded a set with 0 to 9:" Print Set1set1.add (7) p Rint "tried to add another 7, but it is already there:" Print set1# make a list of fruits as you put them into a basketbas  ket = [' Apple ', ' orange ', ' apple ', ' pear ', ' orange ', ' banana ']print ' \nthe original list of fruits: ' Print basket# Create a Set from the list, removes the Duplicatesfruits = sets. Set (basket) print "\nthe set is unique, and the order has a changed:" Print fruits# let ' s get rid of some duplicate wordsstr1 = "Senator Strom Thurmond dressed as as Tarzan" print "\noriginal string:" Print Str1print "A List of the words in the Strin G: "WrdList1 = Str1.split () print wrdlist1# now create a set of unique Wordsstrset = sets. SeT (wrdList1) print "The set of the words in the string:" Print Strsetprint "Convert set back to string (Order have changed!):" Print "". Join (Strset) print# comparing-sets, bear with me ... colorSet1 = sets. Set ([' Red ', ' green ', ' blue ', ' black ', ' orange ', ' White ')] ColorSet2 = sets. Set ([' Black ', ' maroon ', ' grey ', ' Blue ']) print "ColorSet1 =", colorset1print "ColorSet2 =", colorset2# same as (colorset1-c OlorSet2) ColorSet3 = colorset1.difference (colorSet2) print "\nthese is the colors in ColorSet1 that is not in ColorSet2:" Print colorset3# same as (ColorSet1 | colorSet2) ColorSet4 = colorset1.union (colorSet2) print "\nthese is the colors appear ing in both sets: "Print colorset4# same as (colorSet1 ^ colorSet2) colorSet5 = colorset1.symmetric_difference (colorSet2) PR int "\nthese is the colors in ColorSet1 or in ColorSet2, and not both:" Print colorset5# same as (ColorSet1 & Colorset 2) ColorSet6 = Colorset1.intersection (colorSet2) print "\nthese is the colors common to ColorSet1 and ColorSet2:" Print COlorSet6 

Hopefully this article will help you with Python programming.

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