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# The Collatz Sequence
def collatz(number):
global result
if number % 2 == 0:
print(str(number // 2))
result = number // 2
return result
elif number % 2 == 1:
print(str(3 * number + 1))
result = 3 * number + 1
return result
print('Enter number:')
while True:
try:
number = int(input())
except ValueError:
print('The value must be an integer!')
continue
collatz(number)
if result == 1:
break
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