How to call __getitem__ : Class getitem « Class « Python

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Python » Class » Class getitemScreenshots 
How to call __getitem__
How to call __getitem__

class stepper:
     def __getitem__(self, i):
         return self.data[i]

X = stepper()              # X is a stepper object
X.data = "Spam"

print X[1]                       # indexing calls __getitem__

for item in X:             # for loops call __getitem__
     print item,            # for indexes items 0..N


print 'p' in X                   # all call __getitem__ too


print [for c in X]             # list comprehension

print map(None, X)               # map calls

(a,b,c,d= X              # sequence assignments
print a, c, d

print list(X), tuple(X)''.join(X)
(['S''p''a''m']('S''p''a''m')'Spam')



           
       
Related examples in the same category
1. Class: __getitem__ demoClass: __getitem__ demo
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