I've always wondered why leading zeroes (0) are used to represent octal numbers, instead of — for example — 0o. The use of 0o would be just as helpful, but would not cause as many problems as leading 0es (e.g. parseInt('08'); in JavaScript). What are the reason(s) behind this design choice?
Why are leading zeroes used to represent octal numbers?
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3 Answers
Worth noting that in Python 3.0, they decided that octal literals must be prefixed with '0o' and the old '0' prefix became a SyntaxError, for the exact reasons you mention in your question
https://www.python.org/dev/peps/pep-3127/#removal-of-old-octal-syntax
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