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  1. class myContainer:
  2.  
  3.     def __init__(self, data):
  4.  
  5.         self.data = data
  6.  
  7.         self.len = len(data)
  8.  
  9.         self.index = self.len
  10.  
  11.     def __iter__(self):
  12.  
  13.          return self
  14.  
  15.     def __next__(self):
  16.  
  17.          if self.index == 0:
  18.  
  19.              raise StopIteration
  20.  
  21.          self.index -= 1
  22.  
  23.          return self.data[ self.index ]
  24.  
  25. class myPrimes:
  26.  
  27.      def __init__( self, n ):
  28.  
  29.          self.n = n
  30.  
  31.          self.index = -1
  32.  
  33.          self.data = self.aggregateData(n)
  34.  
  35.          self.len = len(self.data)
  36.  
  37.      def __iter__(self):
  38.  
  39.          return self
  40.  
  41.      def isPrime(self,n):
  42.  
  43.         #first statement
  44.         prime = True
  45.         #second statement
  46.         i = 2
  47.         #third statement
  48.         while i * i <= n and prime is True:
  49.               prime = n % i != 0
  50.               i += 1
  51.         #return value
  52.         return prime
  53.  
  54.      def aggregateData(self,n):
  55.  
  56.          list = []
  57.  
  58.          for i in range(2, n + 1):
  59.  
  60.              if self.isPrime(i):
  61.  
  62.                  list.append(i)
  63.  
  64.          return list
  65.  
  66.      def __next__(self):
  67.  
  68.         if self.index >= self.len - 1:
  69.              raise StopIteration
  70.  
  71.         self.index += 1
  72.  
  73.         return self.data[ self.index ]
  74.  
  75. def main():
  76.  
  77.     ob = myPrimes(100)
  78.  
  79.     result = [x for x in ob]
  80.  
  81.     print(result)
  82.  
  83.     ob2 = myContainer("spam")
  84.  
  85.     result2 = [x for x in ob2]
  86.  
  87.     print(result2)
  88.  
  89. main()
  90.  
Success #stdin #stdout 0.02s 9168KB
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stdin
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Standard input is empty
stdout
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[2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97]
['m', 'a', 'p', 's']
https://ideone.com/IS6goV
Iterators in Python3
language:
Python 3 (python  3.9.5)
created:
3 years ago
visibility:
secret

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