Re: and becomes or and or becomes and
On May 23, 11:30 pm, rusi rustompm...@gmail.com wrote: On May 23, 5:30 am, Steven D'Aprano steve +comp.lang.pyt...@pearwood.info wrote: On Sun, 22 May 2011 15:39:33 -0700, Tim Roberts wrote: Stef Mientki stef.mien...@gmail.com wrote: must of us will not use single bits these days, but at first sight, this looks funny : a=2 b=6 a and b 6 a b 2 a or b 2 a | b 6 That IS funny. Interesting how a careful choice of arugments will fool us. One of my favorite math jokes is like that. A teacher asked a student to reduce the following fraction: 16 64 He says all I have to do is cancel out the sixes, so the answer is 1/4. One of my favourite variations on this is by Abbott and Costello, where Costello proves that 13*7 = 28 in three different ways. http://www.youtube.com/watch?v=rLprXHbn19I Ha Ha! [You're hired Steven] And of course, a programmer cannot tell the difference between Halloween and Christmas day. -- http://mail.python.org/mailman/listinfo/python-list
Re: and becomes or and or becomes and
On Sat, May 28, 2011 at 10:27 PM, bch bch.itbgcth...@gmail.com wrote: And of course, a programmer cannot tell the difference between Halloween and Christmas day. Well known, of course. But a lot of modern programmers don't speak octal, they only use another power-of-two base; it's as though someone's cast a hex on them. Chris Angelico -- http://mail.python.org/mailman/listinfo/python-list
Re: and becomes or and or becomes and
On Sun, 22 May 2011 15:39:33 -0700, Tim Roberts wrote: That IS funny. Interesting how a careful choice of arugments will fool us. One of my favorite math jokes is like that. A teacher asked a student to reduce the following fraction: 16 64 He says all I have to do is cancel out the sixes, so the answer is 1/4. Not Python, but: #define SIX 1 + 5 #define NINE 8 + 1 ... printf(six times nine is: %d\n, SIX * NINE); -- http://mail.python.org/mailman/listinfo/python-list
Re: and becomes or and or becomes and
On Sat, May 28, 2011 at 11:31 PM, Nobody nob...@nowhere.com wrote: Not Python, but: #define SIX 1 + 5 #define NINE 8 + 1 ... printf(six times nine is: %d\n, SIX * NINE); *AWESOME*!! That is brilliant! DNA FTW. ChrisA -- http://mail.python.org/mailman/listinfo/python-list
Re: and becomes or and or becomes and
On 22-May-11 15:23 PM, Stef Mientki wrote: hello, must of us will not use single bits these days, but at first sight, this looks funny : a=2 b=6 a and b 6 a b 2 a or b 2 a | b 6 cheers, Stef 5.2. Boolean Operations — and, or, not These are the Boolean operations, ordered by ascending priority: Operation Result Notes x or y if x is false, then y, else x (1) x and y if x is false, then x, else y (2) not xif x is false, then True, else False (3) The second line is puzzling at first look, but consistent. It is analogous to the Conditional Expression. See: http://docs.python.org/reference/expressions.html#conditional-expressions Colin W. -- http://mail.python.org/mailman/listinfo/python-list
Re: and becomes or and or becomes and
On May 23, 5:30 am, Steven D'Aprano steve +comp.lang.pyt...@pearwood.info wrote: On Sun, 22 May 2011 15:39:33 -0700, Tim Roberts wrote: Stef Mientki stef.mien...@gmail.com wrote: must of us will not use single bits these days, but at first sight, this looks funny : a=2 b=6 a and b 6 a b 2 a or b 2 a | b 6 That IS funny. Interesting how a careful choice of arugments will fool us. One of my favorite math jokes is like that. A teacher asked a student to reduce the following fraction: 16 64 He says all I have to do is cancel out the sixes, so the answer is 1/4. One of my favourite variations on this is by Abbott and Costello, where Costello proves that 13*7 = 28 in three different ways. http://www.youtube.com/watch?v=rLprXHbn19I Ha Ha! [You're hired Steven] -- http://mail.python.org/mailman/listinfo/python-list
and becomes or and or becomes and
hello, must of us will not use single bits these days, but at first sight, this looks funny : a=2 b=6 a and b 6 a b 2 a or b 2 a | b 6 cheers, Stef -- http://mail.python.org/mailman/listinfo/python-list
Re: and becomes or and or becomes and
Stef Mientki wrote: must of us will not use single bits these days, but at first sight, this looks funny : a=2 b=6 a and b 6 a b 2 a or b 2 a | b 6 Change the order of the operands and see what happens. -- PointedEars Bitte keine Kopien per E-Mail. / Please do not Cc: me. -- http://mail.python.org/mailman/listinfo/python-list
Re: and becomes or and or becomes and
On 5/22/2011 5:57 PM, Thomas 'PointedEars' Lahn wrote: Stef Mientki wrote: must of us will not use single bits these days, but at first sight, this looks funny : a=2 b=6 a and b 6 a b 2 a or b 2 a | b 6 Change the order of the operands and see what happens. or change a,b to 1,2 -- Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
Re: and becomes or and or becomes and
Stef Mientki stef.mien...@gmail.com wrote: must of us will not use single bits these days, but at first sight, this looks funny : a=2 b=6 a and b 6 a b 2 a or b 2 a | b 6 That IS funny. Interesting how a careful choice of arugments will fool us. One of my favorite math jokes is like that. A teacher asked a student to reduce the following fraction: 16 64 He says all I have to do is cancel out the sixes, so the answer is 1/4. -- Tim Roberts, t...@probo.com Providenza Boekelheide, Inc. -- http://mail.python.org/mailman/listinfo/python-list
Re: and becomes or and or becomes and
On Mon, May 23, 2011 at 8:39 AM, Tim Roberts t...@probo.com wrote: That IS funny. Interesting how a careful choice of arugments will fool us. One of my favorite math jokes is like that. A teacher asked a student to reduce the following fraction: 16 64 He says all I have to do is cancel out the sixes, so the answer is 1/4. I like. :) But in the OP, the difference between and and , or or and |, is subtle yet absolute. They are completely different operators. The bitwise operators function like the arithmetic operators - evaluate both operands, then do something that combines them into one value. The logical operators, though, are more like the if statement: q = a and b is similar to: if a: q = a else: q = b (Pedants, please note that I said similar not equivalent.) They happen to do similar things, but they're completely different in operation. I do like the humour value from the careful selection of operands though! Chris Angelico -- http://mail.python.org/mailman/listinfo/python-list
Re: and becomes or and or becomes and
On Sun, 22 May 2011 15:39:33 -0700, Tim Roberts wrote: Stef Mientki stef.mien...@gmail.com wrote: must of us will not use single bits these days, but at first sight, this looks funny : a=2 b=6 a and b 6 a b 2 a or b 2 a | b 6 That IS funny. Interesting how a careful choice of arugments will fool us. One of my favorite math jokes is like that. A teacher asked a student to reduce the following fraction: 16 64 He says all I have to do is cancel out the sixes, so the answer is 1/4. One of my favourite variations on this is by Abbott and Costello, where Costello proves that 13*7 = 28 in three different ways. http://www.youtube.com/watch?v=rLprXHbn19I -- Steven -- http://mail.python.org/mailman/listinfo/python-list
