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Puzzle 22: Explanation

Explore how Python’s for loop operates by iterating over iterable objects and using iterators. Understand creating custom iterator classes with __iter__ and __next__ methods and how to use generators for simplified iteration.

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Try it yourself

Try executing the code below to verify the result:

Python 3.8
for n in range(5):
    print(n, end=' ')
    n = 5
print()

Explanation

Python’s for loop defaults to a “for each” type of loop. Iteration in Python involves two of the ...