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Python comparing version strings problem - alternatives to StrictVersion?

  • 26-10-2016 08:16PM
    #1
    veryangryman
    Registered Users, Registered Users 2 Posts: 5,767 ✭✭✭


    Below i am using StrictVersion in Python.

    logging.info("Comparing " + deployment_version.strip() + " with " + latest_green_iso.strip())
    if deployment_version.strip() <= latest_green_iso.strip():
    logging.info("Yep less")

    If the first comparison string is less than the second, the next line prints "Yep less".
    As you can see, if the first 2 parts of Strings are alike, the third seems to be (wrongly) assumed to be greater, so python will not print the message.

    [INFO][get_suitable_deployment.py:149][2016-10-26 21:07:39,294] Comparing 1.31.9 with 1.31.11
    [INFO][get_suitable_deployment.py:149][2016-10-26 21:07:39,295] Comparing 1.31.9 with 1.31.11
    [INFO][get_suitable_deployment.py:149][2016-10-26 21:07:39,295] Comparing 1.31.8 with 1.31.11
    [INFO][get_suitable_deployment.py:149][2016-10-26 21:07:39,295] Comparing 1.31.6 with 1.31.11
    [INFO][get_suitable_deployment.py:149][2016-10-26 21:07:39,295] Comparing 1.31.4 with 1.31.11
    [INFO][get_suitable_deployment.py:149][2016-10-26 21:07:39,295] Comparing 1.30.90 with 1.31.11
    [INFO][get_suitable_deployment.py:151][2016-10-26 21:07:39,295] Yep less
    [INFO][get_suitable_deployment.py:149][2016-10-26 21:07:39,295] Comparing 1.30.88 with 1.31.11
    [INFO][get_suitable_deployment.py:151][2016-10-26 21:07:39,295] Yep less
    [INFO][get_suitable_deployment.py:149][2016-10-26 21:07:39,296] Comparing 1.30.79 with 1.31.11
    [INFO][get_suitable_deployment.py:151][2016-10-26 21:07:39,296] Yep less


    What is up with that? Any alternative method to compare version Strings?


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