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annotate Modules/future_builtins.c @ 58925:eecf1bef052d 2.6

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Merged revisions 78207 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r78207 | ezio.melotti | 2010-02-17 01:26:09 +0200 (Wed, 17 Feb 2010) | 1 line #7930: fix stripid ........
author Ezio Melotti <ezio.melotti@gmail.com>
date Tue, 16 Feb 2010 23:29:44 +0000
parents 673532aa378b
children e38335d4df91 1480fa3fcab4
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8eb598331231 Added future_builtins, which contains PEP 3127 compatible versions of hex() and oct().
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1
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2 /* future_builtins module */
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3
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4 /* This module provides functions that will be builtins in Python 3.0,
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5 but that conflict with builtins that already exist in Python
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6 2.x. */
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7
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8
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9 #include "Python.h"
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10
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11 PyDoc_STRVAR(module_doc,
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12 "This module provides functions that will be builtins in Python 3.0,\n\
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13 but that conflict with builtins that already exist in Python 2.x.\n\
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14 \n\
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15 Functions:\n\
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16 \n\
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17 hex(arg) -- Returns the hexadecimal representation of an integer\n\
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18 oct(arg) -- Returns the octal representation of an integer\n\
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19 \n\
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20 The typical usage of this module is to replace existing builtins in a\n\
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21 module's namespace:\n \n\
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22 from future_builtins import hex, oct\n");
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23
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24 static PyObject *
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25 builtin_hex(PyObject *self, PyObject *v)
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26 {
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27 return PyNumber_ToBase(v, 16);
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28 }
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29
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30 PyDoc_STRVAR(hex_doc,
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31 "hex(number) -> string\n\
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32 \n\
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33 Return the hexadecimal representation of an integer or long integer.");
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34
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35
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36 static PyObject *
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37 builtin_oct(PyObject *self, PyObject *v)
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38 {
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39 return PyNumber_ToBase(v, 8);
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40 }
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41
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42 PyDoc_STRVAR(oct_doc,
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43 "oct(number) -> string\n\
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44 \n\
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45 Return the octal representation of an integer or long integer.");
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47
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48 static PyObject *
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49 builtin_ascii(PyObject *self, PyObject *v)
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50 {
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51 return PyObject_Repr(v);
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52 }
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53
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54 PyDoc_STRVAR(ascii_doc,
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55 "ascii(object) -> string\n\
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56 \n\
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57 Return the same as repr(). In Python 3.x, the repr() result will\n\
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58 contain printable characters unescaped, while the ascii() result\n\
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59 will have such characters backslash-escaped.");
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60
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61 /* List of functions exported by this module */
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62
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63 static PyMethodDef module_functions[] = {
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64 {"hex", builtin_hex, METH_O, hex_doc},
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65 {"oct", builtin_oct, METH_O, oct_doc},
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66 {"ascii", builtin_ascii, METH_O, ascii_doc},
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67 {NULL, NULL} /* Sentinel */
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68 };
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70
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71 /* Initialize this module. */
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72
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73 PyMODINIT_FUNC
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74 initfuture_builtins(void)
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75 {
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76 PyObject *m, *itertools, *iter_func;
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77 char *it_funcs[] = {"imap", "ifilter", "izip", NULL};
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78 char **cur_func;
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79
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80 m = Py_InitModule3("future_builtins", module_functions, module_doc);
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81 if (m == NULL)
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82 return;
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83
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84 itertools = PyImport_ImportModuleNoBlock("itertools");
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85 if (itertools == NULL)
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86 return;
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87
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88 for (cur_func = it_funcs; *cur_func; ++cur_func){
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89 iter_func = PyObject_GetAttrString(itertools, *cur_func);
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90 if (iter_func == NULL)
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91 return;
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92 PyModule_AddObject(m, *cur_func+1, iter_func);
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93 }
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94 Py_DECREF(itertools);
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95 /* any other initialization needed */
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96 }