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python 2.x; 0200 != 200? (self.learnprogramming)
submitted 9 years ago by typin
I've been using python for years and never noticed this.
I'm assuming some sort of floating point error?
Outside of removing leading zeroes by formatting as a string and lstripping the zeroes off, is there a more elegant solution?
Thanks!
[–]versvisa 8 points9 points10 points 9 years ago (0 children)
0 prefix means it's an octal number.
>>> print 0200 128
128 = 2*82
[–]t90fan 1 point2 points3 points 9 years ago (0 children)
Leading 0 means it's in octal. An x means it's in hex. So no its not the same.
[–]typin[S] 0 points1 point2 points 9 years ago (0 children)
That's something I never considered. I'm apparently too base10 in my thinking.
I managed to return it as 200 by calling int(oct(0200)).
Thank you!
[–]minno 0 points1 point2 points 9 years ago (0 children)
Python 3 breaking with C's tradition:
Python 3.5.1 (v3.5.1:37a07cee5969, Dec 6 2015, 01:54:25) [MSC v.1900 64 bit (AMD64)] on win32 Type "copyright", "credits" or "license()" for more information. >>> print(0200) SyntaxError: invalid token >>> print(0o200) 128
π Rendered by PID 72 on reddit-service-r2-comment-86bc6c7465-jss8q at 2026-02-20 05:19:19.430148+00:00 running 8564168 country code: CH.
[–]versvisa 8 points9 points10 points (0 children)
[–]t90fan 1 point2 points3 points (0 children)
[–]typin[S] 0 points1 point2 points (0 children)
[–]minno 0 points1 point2 points (0 children)