Code Explanation:
🔹 1. Importing cycle
from itertools import cycle
✅ Explanation:
cycle() is imported from Python's itertools module.
cycle() creates an iterator that repeats elements forever.
Think of it as:
A → B → A → B → A → B → ...
It never stops automatically.
🔹 2. Creating a Cycle Object
c = cycle(["A", "B"])
✅ Explanation:
A cycle iterator is created.
Original list:
["A", "B"]
Internally:
A
↓
B
↓
A
↓
B
↓
A
↓
...
Current state:
c → cycle iterator
🔹 3. Starting the Loop
for _ in range(5):
✅ Explanation:
range(5) generates:
0, 1, 2, 3, 4
Total iterations:
5 times
_ means:
Loop variable is not needed
🔹 4. First Iteration
next(c)
✅ Explanation:
Python asks cycle for the next value.
Current sequence:
A → B → A → B ...
Returns:
A
Printed:
A
🔹 5. Second Iteration
next(c)
✅ Explanation:
Cycle moves to next element.
Returns:
B
Printed:
A B
🔹 6. Third Iteration
next(c)
✅ Explanation:
List finished:
[A, B]
Normally an iterator would stop.
But cycle() restarts automatically.
Returns:
A
Printed:
A B A
🔹 7. Fourth Iteration
next(c)
Returns:
B
Printed:
A B A B
🔹 8. Fifth Iteration
next(c)
Returns:
A
Printed:
A B A B A
🔹 9. Understanding end=" "
print(next(c), end=" ")
✅ Explanation:
Normally:
print("A")
print("B")
Output:
A
B
But:
print("A", end=" ")
print("B", end=" ")
Output:
A B
Everything prints on the same line.
🎯 Final Output
A B A B A
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