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|00005ed0| 50 79 74 68 6f 6e 20 63 | 61 6c 6c 3a 0d 20 20 20 |Python c|all:. |
|00005ee0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00005ef0| 20 66 28 20 28 28 30 2c | 20 30 29 2c 20 28 34 30 | f( ((0,| 0), (40|
|00005f00| 30 2c 20 33 30 30 29 29 | 2c 20 28 31 30 2c 20 31 |0, 300))|, (10, 1|
|00005f10| 30 29 29 20 2a 2f 0d 20 | 20 20 20 7d 0d 5c 65 6e |0)) */. | }.\en|
|00005f20| 64 7b 76 65 72 62 61 74 | 69 6d 7d 0d 0d 4e 6f 74 |d{verbat|im}..Not|
|00005f30| 65 20 74 68 61 74 20 74 | 68 65 20 60 74 6f 70 20 |e that t|he `top |
|00005f40| 6c 65 76 65 6c 27 20 6f | 66 20 61 20 6e 6f 6e 2d |level' o|f a non-|
|00005f50| 65 6d 70 74 79 20 66 6f | 72 6d 61 74 20 73 74 72 |empty fo|rmat str|
|00005f60| 69 6e 67 20 6d 75 73 74 | 20 63 6f 6e 73 69 73 74 |ing must| consist|
|00005f70| 20 6f 66 0d 61 20 73 69 | 6e 67 6c 65 20 75 6e 69 | of.a si|ngle uni|
|00005f80| 74 3b 20 73 74 72 69 6e | 67 73 20 6c 69 6b 65 20 |t; strin|gs like |
|00005f90| 5c 73 61 6d 70 7b 69 73 | 7d 20 61 6e 64 20 5c 73 |\samp{is|} and \s|
|00005fa0| 61 6d 70 7b 28 69 69 29 | 73 5c 23 7d 20 61 72 65 |amp{(ii)|s\#} are|
|00005fb0| 20 6e 6f 74 20 76 61 6c | 69 64 0d 66 6f 72 6d 61 | not val|id.forma|
|00005fc0| 74 20 73 74 72 69 6e 67 | 73 2e 20 20 28 42 75 74 |t string|s. (But|
|00005fd0| 20 5c 73 61 6d 70 7b 73 | 5c 23 7d 20 69 73 2e 29 | \samp{s|\#} is.)|
|00005fe0| 20 20 49 66 20 79 6f 75 | 20 68 61 76 65 20 6d 75 | If you| have mu|
|00005ff0| 6c 74 69 70 6c 65 20 61 | 72 67 75 6d 65 6e 74 73 |ltiple a|rguments|
|00006000| 2c 0d 74 68 65 20 66 6f | 72 6d 61 74 20 6d 75 73 |,.the fo|rmat mus|
|00006010| 74 20 74 68 65 72 65 66 | 6f 72 65 20 61 6c 77 61 |t theref|ore alwa|
|00006020| 79 73 20 62 65 20 65 6e | 63 6c 6f 73 65 64 20 69 |ys be en|closed i|
|00006030| 6e 20 70 61 72 65 6e 74 | 68 65 73 65 73 2c 20 61 |n parent|heses, a|
|00006040| 73 20 69 6e 20 74 68 65 | 0d 65 78 61 6d 70 6c 65 |s in the|.example|
|00006050| 73 20 5c 73 61 6d 70 7b | 28 28 69 69 29 73 5c 23 |s \samp{|((ii)s\#|
|00006060| 29 7d 20 61 6e 64 20 5c | 73 61 6d 70 7b 28 28 28 |)} and \|samp{(((|
|00006070| 69 69 29 28 69 69 29 29 | 28 69 69 29 7d 2e 20 20 |ii)(ii))|(ii)}. |
|00006080| 28 54 68 65 20 63 75 72 | 72 65 6e 74 0d 69 6d 70 |(The cur|rent.imp|
|00006090| 6c 65 6d 65 6e 74 61 74 | 69 6f 6e 20 64 6f 65 73 |lementat|ion does|
|000060a0| 20 6e 6f 74 20 63 6f 6d | 70 6c 61 69 6e 20 77 68 | not com|plain wh|
|000060b0| 65 6e 20 6d 6f 72 65 20 | 74 68 61 6e 20 6f 6e 65 |en more |than one|
|000060c0| 20 75 6e 70 61 72 65 6e | 74 68 65 73 69 7a 65 64 | unparen|thesized|
|000060d0| 0d 66 6f 72 6d 61 74 20 | 75 6e 69 74 20 69 73 20 |.format |unit is |
|000060e0| 67 69 76 65 6e 2e 20 20 | 53 6f 72 72 79 2e 29 0d |given. |Sorry.).|
|000060f0| 0d 54 68 65 20 5c 63 6f | 64 65 7b 67 65 74 61 72 |.The \co|de{getar|
|00006100| 67 73 28 29 7d 20 66 75 | 6e 63 74 69 6f 6e 20 64 |gs()} fu|nction d|
|00006110| 6f 65 73 20 6e 6f 74 20 | 73 75 70 70 6f 72 74 20 |oes not |support |
|00006120| 76 61 72 69 61 62 6c 65 | 2d 6c 65 6e 67 74 68 0d |variable|-length.|
|00006130| 61 72 67 75 6d 65 6e 74 | 20 6c 69 73 74 73 2e 20 |argument| lists. |
|00006140| 20 49 6e 20 73 69 6d 70 | 6c 65 20 63 61 73 65 73 | In simp|le cases|
|00006150| 20 79 6f 75 20 63 61 6e | 20 66 61 6b 65 20 74 68 | you can| fake th|
|00006160| 65 73 65 20 62 79 20 74 | 72 79 69 6e 67 20 73 65 |ese by t|rying se|
|00006170| 76 65 72 61 6c 0d 63 61 | 6c 6c 73 20 74 6f 0d 5c |veral.ca|lls to.\|
|00006180| 63 6f 64 65 7b 67 65 74 | 61 72 67 73 28 29 7d 20 |code{get|args()} |
|00006190| 75 6e 74 69 6c 20 6f 6e | 65 20 73 75 63 63 65 65 |until on|e succee|
|000061a0| 64 73 2c 20 62 75 74 20 | 79 6f 75 20 6d 75 73 74 |ds, but |you must|
|000061b0| 20 74 61 6b 65 20 63 61 | 72 65 20 74 6f 20 63 61 | take ca|re to ca|
|000061c0| 6c 6c 0d 5c 63 6f 64 65 | 7b 65 72 72 5f 63 6c 65 |ll.\code|{err_cle|
|000061d0| 61 72 28 29 7d 20 62 65 | 66 6f 72 65 20 65 61 63 |ar()} be|fore eac|
|000061e0| 68 20 72 65 74 72 79 2e | 20 20 46 6f 72 20 65 78 |h retry.| For ex|
|000061f0| 61 6d 70 6c 65 3a 0d 0d | 5c 62 65 67 69 6e 7b 76 |ample:..|\begin{v|
|00006200| 65 72 62 61 74 69 6d 7d | 0d 20 20 20 20 73 74 61 |erbatim}|. sta|
|00006210| 74 69 63 20 6f 62 6a 65 | 63 74 20 2a 6d 79 5f 6d |tic obje|ct *my_m|
|00006220| 65 74 68 6f 64 28 73 65 | 6c 66 2c 20 61 72 67 73 |ethod(se|lf, args|
|00006230| 29 20 6f 62 6a 65 63 74 | 20 2a 73 65 6c 66 2c 20 |) object| *self, |
|00006240| 2a 61 72 67 73 3b 20 7b | 0d 20 20 20 20 20 20 20 |*args; {|. |
|00006250| 20 69 6e 74 20 69 2c 20 | 6a 2c 20 6b 3b 0d 0d 20 | int i, |j, k;.. |
|00006260| 20 20 20 20 20 20 20 69 | 66 20 28 67 65 74 61 72 | i|f (getar|
|00006270| 67 73 28 61 72 67 73 2c | 20 22 28 69 69 29 22 2c |gs(args,| "(ii)",|
|00006280| 20 26 69 2c 20 26 6a 29 | 29 20 7b 0d 20 20 20 20 | &i, &j)|) {. |
|00006290| 20 20 20 20 20 20 20 20 | 6b 20 3d 20 30 3b 20 2f | |k = 0; /|
|000062a0| 2a 20 55 73 65 20 64 65 | 66 61 75 6c 74 20 74 68 |* Use de|fault th|
|000062b0| 69 72 64 20 61 72 67 75 | 6d 65 6e 74 20 2a 2f 0d |ird argu|ment */.|
|000062c0| 20 20 20 20 20 20 20 20 | 7d 0d 20 20 20 20 20 20 | |}. |
|000062d0| 20 20 65 6c 73 65 20 7b | 0d 20 20 20 20 20 20 20 | else {|. |
|000062e0| 20 20 20 20 20 65 72 72 | 5f 63 6c 65 61 72 28 29 | err|_clear()|
|000062f0| 3b 0d 20 20 20 20 20 20 | 20 20 20 20 20 20 69 66 |;. | if|
|00006300| 20 28 21 67 65 74 61 72 | 67 73 28 61 72 67 73 2c | (!getar|gs(args,|
|00006310| 20 22 28 69 69 69 29 22 | 2c 20 26 69 2c 20 26 6a | "(iii)"|, &i, &j|
|00006320| 2c 20 26 6b 29 29 0d 20 | 20 20 20 20 20 20 20 20 |, &k)). | |
|00006330| 20 20 20 20 20 20 20 72 | 65 74 75 72 6e 20 4e 55 | r|eturn NU|
|00006340| 4c 4c 3b 0d 20 20 20 20 | 20 20 20 20 7d 0d 20 20 |LL;. | }. |
|00006350| 20 20 20 20 20 20 2f 2a | 20 2e 2e 2e 20 75 73 65 | /*| ... use|
|00006360| 20 69 2c 20 6a 20 61 6e | 64 20 6b 20 68 65 72 65 | i, j an|d k here|
|00006370| 20 2e 2e 2e 20 2a 2f 0d | 20 20 20 20 20 20 20 20 | ... */.| |
|00006380| 49 4e 43 52 45 46 28 4e | 6f 6e 65 29 3b 0d 20 20 |INCREF(N|one);. |
|00006390| 20 20 20 20 20 20 72 65 | 74 75 72 6e 20 4e 6f 6e | re|turn Non|
|000063a0| 65 3b 0d 20 20 20 20 7d | 0d 5c 65 6e 64 7b 76 65 |e;. }|.\end{ve|
|000063b0| 72 62 61 74 69 6d 7d 0d | 0d 28 49 74 20 69 73 20 |rbatim}.|.(It is |
|000063c0| 70 6f 73 73 69 62 6c 65 | 20 74 6f 20 74 68 69 6e |possible| to thin|
|000063d0| 6b 20 6f 66 20 61 6e 20 | 65 78 74 65 6e 73 69 6f |k of an |extensio|
|000063e0| 6e 20 74 6f 20 74 68 65 | 20 64 65 66 69 6e 69 74 |n to the| definit|
|000063f0| 69 6f 6e 20 6f 66 20 66 | 6f 72 6d 61 74 0d 73 74 |ion of f|ormat.st|
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