1 | # License for code in this file that was taken from Python 2.5. |
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2 | |
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3 | # PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2 |
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4 | # -------------------------------------------- |
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5 | # |
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6 | # 1. This LICENSE AGREEMENT is between the Python Software Foundation |
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7 | # ("PSF"), and the Individual or Organization ("Licensee") accessing and |
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8 | # otherwise using this software ("Python") in source or binary form and |
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9 | # its associated documentation. |
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10 | # |
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11 | # 2. Subject to the terms and conditions of this License Agreement, PSF |
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12 | # hereby grants Licensee a nonexclusive, royalty-free, world-wide |
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13 | # license to reproduce, analyze, test, perform and/or display publicly, |
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14 | # prepare derivative works, distribute, and otherwise use Python |
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15 | # alone or in any derivative version, provided, however, that PSF's |
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16 | # License Agreement and PSF's notice of copyright, i.e., "Copyright (c) |
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17 | # 2001, 2002, 2003, 2004, 2005, 2006, 2007 Python Software Foundation; |
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18 | # All Rights Reserved" are retained in Python alone or in any derivative |
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19 | # version prepared by Licensee. |
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20 | # |
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21 | # 3. In the event Licensee prepares a derivative work that is based on |
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22 | # or incorporates Python or any part thereof, and wants to make |
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23 | # the derivative work available to others as provided herein, then |
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24 | # Licensee hereby agrees to include in any such work a brief summary of |
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25 | # the changes made to Python. |
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26 | # |
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27 | # 4. PSF is making Python available to Licensee on an "AS IS" |
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28 | # basis. PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR |
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29 | # IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND |
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30 | # DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS |
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31 | # FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON WILL NOT |
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32 | # INFRINGE ANY THIRD PARTY RIGHTS. |
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33 | # |
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34 | # 5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON |
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35 | # FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS |
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36 | # A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON, |
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37 | # OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF. |
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38 | # |
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39 | # 6. This License Agreement will automatically terminate upon a material |
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40 | # breach of its terms and conditions. |
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41 | # |
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42 | # 7. Nothing in this License Agreement shall be deemed to create any |
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43 | # relationship of agency, partnership, or joint venture between PSF and |
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44 | # Licensee. This License Agreement does not grant permission to use PSF |
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45 | # trademarks or trade name in a trademark sense to endorse or promote |
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46 | # products or services of Licensee, or any third party. |
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47 | # |
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48 | # 8. By copying, installing or otherwise using Python, Licensee |
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49 | # agrees to be bound by the terms and conditions of this License |
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50 | # Agreement. |
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51 | |
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52 | |
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53 | def curry(_curried_func, *args, **kwargs): |
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54 | def _curried(*moreargs, **morekwargs): |
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55 | return _curried_func(*(args+moreargs), **dict(kwargs, **morekwargs)) |
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56 | return _curried |
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57 | |
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58 | ### Begin from Python 2.5 functools.py ######################################## |
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59 | |
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60 | # Summary of changes made to the Python 2.5 code below: |
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61 | # * swapped ``partial`` for ``curry`` to maintain backwards-compatibility |
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62 | # in Django. |
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63 | # * Wrapped the ``setattr`` call in ``update_wrapper`` with a try-except |
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64 | # block to make it compatible with Python 2.3, which doesn't allow |
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65 | # assigning to ``__name__``. |
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66 | |
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67 | # Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007 Python Software Foundation. |
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68 | # All Rights Reserved. |
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69 | |
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70 | ############################################################################### |
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71 | |
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72 | # update_wrapper() and wraps() are tools to help write |
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73 | # wrapper functions that can handle naive introspection |
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74 | |
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75 | WRAPPER_ASSIGNMENTS = ('__module__', '__name__', '__doc__') |
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76 | WRAPPER_UPDATES = ('__dict__',) |
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77 | def update_wrapper(wrapper, |
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78 | wrapped, |
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79 | assigned = WRAPPER_ASSIGNMENTS, |
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80 | updated = WRAPPER_UPDATES): |
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81 | """Update a wrapper function to look like the wrapped function |
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82 | |
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83 | wrapper is the function to be updated |
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84 | wrapped is the original function |
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85 | assigned is a tuple naming the attributes assigned directly |
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86 | from the wrapped function to the wrapper function (defaults to |
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87 | functools.WRAPPER_ASSIGNMENTS) |
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88 | updated is a tuple naming the attributes off the wrapper that |
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89 | are updated with the corresponding attribute from the wrapped |
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90 | function (defaults to functools.WRAPPER_UPDATES) |
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91 | """ |
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92 | for attr in assigned: |
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93 | try: |
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94 | setattr(wrapper, attr, getattr(wrapped, attr)) |
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95 | except TypeError: # Python 2.3 doesn't allow assigning to __name__. |
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96 | pass |
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97 | for attr in updated: |
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98 | getattr(wrapper, attr).update(getattr(wrapped, attr)) |
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99 | # Return the wrapper so this can be used as a decorator via curry() |
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100 | return wrapper |
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101 | |
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102 | def wraps(wrapped, |
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103 | assigned = WRAPPER_ASSIGNMENTS, |
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104 | updated = WRAPPER_UPDATES): |
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105 | """Decorator factory to apply update_wrapper() to a wrapper function |
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106 | |
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107 | Returns a decorator that invokes update_wrapper() with the decorated |
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108 | function as the wrapper argument and the arguments to wraps() as the |
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109 | remaining arguments. Default arguments are as for update_wrapper(). |
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110 | This is a convenience function to simplify applying curry() to |
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111 | update_wrapper(). |
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112 | """ |
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113 | return curry(update_wrapper, wrapped=wrapped, |
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114 | assigned=assigned, updated=updated) |
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115 | |
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116 | ### End from Python 2.5 functools.py ########################################## |
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