Mercurial > repos > shellac > guppy_basecaller

annotate env/lib/python3.7/site-packages/future/builtins/misc.py @ 2:6af9afd405e9 draft

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"planemo upload commit 0a63dd5f4d38a1f6944587f52a8cd79874177fc1"
author shellac
date Thu, 14 May 2020 14:56:58 -0400
parents 26e78fe6e8c4
children
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1 """
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2 A module that brings in equivalents of various modified Python 3 builtins
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3 into Py2. Has no effect on Py3.
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4
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5 The builtin functions are:
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6
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7 - ``ascii`` (from Py2's future_builtins module)
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8 - ``hex`` (from Py2's future_builtins module)
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9 - ``oct`` (from Py2's future_builtins module)
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10 - ``chr`` (equivalent to ``unichr`` on Py2)
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11 - ``input`` (equivalent to ``raw_input`` on Py2)
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12 - ``next`` (calls ``__next__`` if it exists, else ``next`` method)
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13 - ``open`` (equivalent to io.open on Py2)
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14 - ``super`` (backport of Py3's magic zero-argument super() function
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15 - ``round`` (new "Banker's Rounding" behaviour from Py3)
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16 - ``max`` (new default option from Py3.4)
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17 - ``min`` (new default option from Py3.4)
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18
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19 ``isinstance`` is also currently exported for backwards compatibility
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20 with v0.8.2, although this has been deprecated since v0.9.
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21
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22
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23 input()
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24 -------
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25 Like the new ``input()`` function from Python 3 (without eval()), except
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26 that it returns bytes. Equivalent to Python 2's ``raw_input()``.
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27
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28 Warning: By default, importing this module *removes* the old Python 2
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29 input() function entirely from ``__builtin__`` for safety. This is
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30 because forgetting to import the new ``input`` from ``future`` might
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31 otherwise lead to a security vulnerability (shell injection) on Python 2.
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32
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33 To restore it, you can retrieve it yourself from
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34 ``__builtin__._old_input``.
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35
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36 Fortunately, ``input()`` seems to be seldom used in the wild in Python
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37 2...
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38
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39 """
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40
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41 from future import utils
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42
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43
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44 if utils.PY2:
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45 from io import open
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46 from future_builtins import ascii, oct, hex
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47 from __builtin__ import unichr as chr, pow as _builtin_pow
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48 import __builtin__
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49
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50 # Only for backward compatibility with future v0.8.2:
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51 isinstance = __builtin__.isinstance
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52
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53 # Warning: Python 2's input() is unsafe and MUST not be able to be used
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54 # accidentally by someone who expects Python 3 semantics but forgets
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55 # to import it on Python 2. Versions of ``future`` prior to 0.11
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56 # deleted it from __builtin__. Now we keep in __builtin__ but shadow
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57 # the name like all others. Just be sure to import ``input``.
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58
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59 input = raw_input
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60
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61 from future.builtins.newnext import newnext as next
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62 from future.builtins.newround import newround as round
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63 from future.builtins.newsuper import newsuper as super
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64 from future.builtins.new_min_max import newmax as max
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65 from future.builtins.new_min_max import newmin as min
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66 from future.types.newint import newint
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67
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68 _SENTINEL = object()
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69
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70 def pow(x, y, z=_SENTINEL):
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71 """
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72 pow(x, y[, z]) -> number
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73
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74 With two arguments, equivalent to x**y. With three arguments,
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75 equivalent to (x**y) % z, but may be more efficient (e.g. for ints).
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76 """
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77 # Handle newints
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78 if isinstance(x, newint):
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79 x = long(x)
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80 if isinstance(y, newint):
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81 y = long(y)
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82 if isinstance(z, newint):
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83 z = long(z)
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84
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85 try:
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86 if z == _SENTINEL:
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87 return _builtin_pow(x, y)
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88 else:
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89 return _builtin_pow(x, y, z)
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90 except ValueError:
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91 if z == _SENTINEL:
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92 return _builtin_pow(x+0j, y)
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93 else:
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94 return _builtin_pow(x+0j, y, z)
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95
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96
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97 # ``future`` doesn't support Py3.0/3.1. If we ever did, we'd add this:
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98 # callable = __builtin__.callable
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99
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100 __all__ = ['ascii', 'chr', 'hex', 'input', 'isinstance', 'next', 'oct',
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101 'open', 'pow', 'round', 'super', 'max', 'min']
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102
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103 else:
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104 import builtins
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105 ascii = builtins.ascii
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106 chr = builtins.chr
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107 hex = builtins.hex
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108 input = builtins.input
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109 next = builtins.next
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110 # Only for backward compatibility with future v0.8.2:
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111 isinstance = builtins.isinstance
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112 oct = builtins.oct
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113 open = builtins.open
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114 pow = builtins.pow
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115 round = builtins.round
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116 super = builtins.super
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117 if utils.PY34_PLUS:
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118 max = builtins.max
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119 min = builtins.min
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120 __all__ = []
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121 else:
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122 from future.builtins.new_min_max import newmax as max
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123 from future.builtins.new_min_max import newmin as min
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124 __all__ = ['min', 'max']
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125
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126 # The callable() function was removed from Py3.0 and 3.1 and
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127 # reintroduced into Py3.2+. ``future`` doesn't support Py3.0/3.1. If we ever
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128 # did, we'd add this:
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129 # try:
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130 # callable = builtins.callable
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131 # except AttributeError:
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132 # # Definition from Pandas
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133 # def callable(obj):
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134 # return any("__call__" in klass.__dict__ for klass in type(obj).__mro__)
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135 # __all__.append('callable')