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annotate Doc/includes/mp_newtype.py @ 79675:c0a2294de787 2.7

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Issue #16199: Backport 2to3 typo fix from 3.2.
author Chris Jerdonek <chris.jerdonek@gmail.com>
date Thu, 11 Oct 2012 16:15:46 -0700
parents 3c7eef187bea
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #
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2 # This module shows how to use arbitrary callables with a subclass of
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3 # `BaseManager`.
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4 #
50004
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5 # Copyright (c) 2006-2008, R Oudkerk
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6 # All rights reserved.
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7 #
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8
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9 from multiprocessing import freeze_support
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10 from multiprocessing.managers import BaseManager, BaseProxy
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11 import operator
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12
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13 ##
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14
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15 class Foo(object):
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16 def f(self):
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17 print 'you called Foo.f()'
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18 def g(self):
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19 print 'you called Foo.g()'
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20 def _h(self):
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21 print 'you called Foo._h()'
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22
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23 # A simple generator function
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24 def baz():
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25 for i in xrange(10):
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26 yield i*i
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27
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28 # Proxy type for generator objects
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29 class GeneratorProxy(BaseProxy):
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30 _exposed_ = ('next', '__next__')
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31 def __iter__(self):
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32 return self
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33 def next(self):
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34 return self._callmethod('next')
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35 def __next__(self):
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36 return self._callmethod('__next__')
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37
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38 # Function to return the operator module
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39 def get_operator_module():
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40 return operator
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41
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42 ##
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43
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44 class MyManager(BaseManager):
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45 pass
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46
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47 # register the Foo class; make `f()` and `g()` accessible via proxy
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48 MyManager.register('Foo1', Foo)
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49
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50 # register the Foo class; make `g()` and `_h()` accessible via proxy
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51 MyManager.register('Foo2', Foo, exposed=('g', '_h'))
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52
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53 # register the generator function baz; use `GeneratorProxy` to make proxies
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54 MyManager.register('baz', baz, proxytype=GeneratorProxy)
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55
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56 # register get_operator_module(); make public functions accessible via proxy
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57 MyManager.register('operator', get_operator_module)
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58
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59 ##
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60
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61 def test():
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62 manager = MyManager()
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63 manager.start()
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64
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65 print '-' * 20
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66
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67 f1 = manager.Foo1()
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68 f1.f()
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69 f1.g()
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70 assert not hasattr(f1, '_h')
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71 assert sorted(f1._exposed_) == sorted(['f', 'g'])
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72
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73 print '-' * 20
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74
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75 f2 = manager.Foo2()
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76 f2.g()
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77 f2._h()
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78 assert not hasattr(f2, 'f')
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79 assert sorted(f2._exposed_) == sorted(['g', '_h'])
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80
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81 print '-' * 20
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82
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83 it = manager.baz()
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84 for i in it:
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85 print '<%d>' % i,
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86 print
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87
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88 print '-' * 20
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89
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90 op = manager.operator()
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91 print 'op.add(23, 45) =', op.add(23, 45)
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92 print 'op.pow(2, 94) =', op.pow(2, 94)
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93 print 'op.getslice(range(10), 2, 6) =', op.getslice(range(10), 2, 6)
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94 print 'op.repeat(range(5), 3) =', op.repeat(range(5), 3)
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95 print 'op._exposed_ =', op._exposed_
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96
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97 ##
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98
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99 if __name__ == '__main__':
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100 freeze_support()
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101 test()