[sage-support] Strange behaviour for two similar functions
Hi, How to explain the difference between these two similar functions ? Thansk. = Test 1 F = [1,2,3] def test1(F): F[0] = 0 F[1] = 0 F[2] = 0 print F test1(F); F [0, 0, 0] [0, 0, 0] === Test 2 === F = [1,2,3] def test2(F): F = [0,0,0] test2(F); F [0, 0, 0] [1, 2, 3] -- You received this message because you are subscribed to the Google Groups sage-support group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
Re: [sage-support] Strange behaviour for two similar functions
I think you need to read a python intro to see the difference between mutable / immutable lists and similar. This is a python question, not really a Sage question. John Cremona On 7 June 2013 09:24, B. Zhang yangtz...@gmail.com wrote: Hi, How to explain the difference between these two similar functions ? Thansk. = Test 1 F = [1,2,3] def test1(F): F[0] = 0 F[1] = 0 F[2] = 0 print F test1(F); F [0, 0, 0] [0, 0, 0] === Test 2 === F = [1,2,3] def test2(F): F = [0,0,0] test2(F); F [0, 0, 0] [1, 2, 3] -- You received this message because you are subscribed to the Google Groups sage-support group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en. For more options, visit https://groups.google.com/groups/opt_out. -- You received this message because you are subscribed to the Google Groups sage-support group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
Re: [sage-support] Strange behaviour for two similar functions
+1 2013/6/7 John Cremona john.crem...@gmail.com I think you need to read a python intro to see the difference between mutable / immutable lists and similar. This is a python question, not really a Sage question. John Cremona On 7 June 2013 09:24, B. Zhang yangtz...@gmail.com wrote: Hi, How to explain the difference between these two similar functions ? Thansk. = Test 1 F = [1,2,3] def test1(F): F[0] = 0 F[1] = 0 F[2] = 0 print F test1(F); F [0, 0, 0] [0, 0, 0] === Test 2 === F = [1,2,3] def test2(F): F = [0,0,0] test2(F); F [0, 0, 0] [1, 2, 3] -- You received this message because you are subscribed to the Google Groups sage-support group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en. For more options, visit https://groups.google.com/groups/opt_out. -- You received this message because you are subscribed to the Google Groups sage-support group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en. For more options, visit https://groups.google.com/groups/opt_out. -- You received this message because you are subscribed to the Google Groups sage-support group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
