22 lines
368 B
Python
Executable file
22 lines
368 B
Python
Executable file
#! /usr/bin/env python3
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import sys
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import collatz
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usage='usage: collatzSequence [number] prints the collatz sequence for the given number'
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if len(sys.argv)<2:
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Print(usage)
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sys.exit()
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number = sys.argv[1]
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try:
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number = int(number)
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except:
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print(usage)
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sys.exit()
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while number != 1:
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number = collatz.nextInSequence(number)
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print(number)
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