Mercurial > cpython-lru_cache-weakref

annotate Lib/tkinter/messagebox.py @ 87690:66c1c9f32567 default tip

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Add use_weakref option to functools.lru_cache The use_weakref option makes lru_cache create weak references to the function arguments when creating the cache key, which prevents them from staying in the memory forever even after all other references to them are gone. This is a proof of concept for http://bugs.python.org/issue19859
author Radomir Dopieralski <devel@sheep.art.pl>
date Tue, 03 Dec 2013 16:02:48 +0100
parents 9ffc8f0515cd
children
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1 # tk common message boxes
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2 #
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3 # this module provides an interface to the native message boxes
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4 # available in Tk 4.2 and newer.
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5 #
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6 # written by Fredrik Lundh, May 1997
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7 #
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8
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9 #
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10 # options (all have default values):
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11 #
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12 # - default: which button to make default (one of the reply codes)
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13 #
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14 # - icon: which icon to display (see below)
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15 #
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16 # - message: the message to display
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17 #
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18 # - parent: which window to place the dialog on top of
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19 #
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20 # - title: dialog title
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21 #
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22 # - type: dialog type; that is, which buttons to display (see below)
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23 #
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24
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25 from tkinter.commondialog import Dialog
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26
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27 #
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28 # constants
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29
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30 # icons
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31 ERROR = "error"
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32 INFO = "info"
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33 QUESTION = "question"
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34 WARNING = "warning"
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35
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36 # types
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37 ABORTRETRYIGNORE = "abortretryignore"
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38 OK = "ok"
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39 OKCANCEL = "okcancel"
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40 RETRYCANCEL = "retrycancel"
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41 YESNO = "yesno"
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42 YESNOCANCEL = "yesnocancel"
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43
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44 # replies
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45 ABORT = "abort"
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46 RETRY = "retry"
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47 IGNORE = "ignore"
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48 OK = "ok"
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49 CANCEL = "cancel"
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50 YES = "yes"
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51 NO = "no"
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52
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53
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54 #
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55 # message dialog class
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56
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57 class Message(Dialog):
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58 "A message box"
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59
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60 command = "tk_messageBox"
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61
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62
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63 #
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64 # convenience stuff
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65
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66 # Rename _icon and _type options to allow overriding them in options
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67 def _show(title=None, message=None, _icon=None, _type=None, **options):
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68 if _icon and "icon" not in options: options["icon"] = _icon
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69 if _type and "type" not in options: options["type"] = _type
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70 if title: options["title"] = title
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71 if message: options["message"] = message
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72 res = Message(**options).show()
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73 # In some Tcl installations, yes/no is converted into a boolean.
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74 if isinstance(res, bool):
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75 if res:
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76 return YES
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77 return NO
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78 # In others we get a Tcl_Obj.
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79 return str(res)
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80
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81 def showinfo(title=None, message=None, **options):
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82 "Show an info message"
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83 return _show(title, message, INFO, OK, **options)
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84
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85 def showwarning(title=None, message=None, **options):
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86 "Show a warning message"
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87 return _show(title, message, WARNING, OK, **options)
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88
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89 def showerror(title=None, message=None, **options):
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90 "Show an error message"
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91 return _show(title, message, ERROR, OK, **options)
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92
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93 def askquestion(title=None, message=None, **options):
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94 "Ask a question"
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95 return _show(title, message, QUESTION, YESNO, **options)
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96
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97 def askokcancel(title=None, message=None, **options):
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98 "Ask if operation should proceed; return true if the answer is ok"
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99 s = _show(title, message, QUESTION, OKCANCEL, **options)
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100 return s == OK
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101
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102 def askyesno(title=None, message=None, **options):
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103 "Ask a question; return true if the answer is yes"
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104 s = _show(title, message, QUESTION, YESNO, **options)
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105 return s == YES
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106
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107 def askyesnocancel(title=None, message=None, **options):
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108 "Ask a question; return true if the answer is yes, None if cancelled."
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109 s = _show(title, message, QUESTION, YESNOCANCEL, **options)
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110 # s might be a Tcl index object, so convert it to a string
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111 s = str(s)
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112 if s == CANCEL:
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113 return None
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114 return s == YES
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115
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116 def askretrycancel(title=None, message=None, **options):
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117 "Ask if operation should be retried; return true if the answer is yes"
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118 s = _show(title, message, WARNING, RETRYCANCEL, **options)
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119 return s == RETRY
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120
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121
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122 # --------------------------------------------------------------------
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123 # test stuff
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124
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125 if __name__ == "__main__":
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126
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127 print("info", showinfo("Spam", "Egg Information"))
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128 print("warning", showwarning("Spam", "Egg Warning"))
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129 print("error", showerror("Spam", "Egg Alert"))
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130 print("question", askquestion("Spam", "Question?"))
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131 print("proceed", askokcancel("Spam", "Proceed?"))
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132 print("yes/no", askyesno("Spam", "Got it?"))
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133 print("yes/no/cancel", askyesnocancel("Spam", "Want it?"))
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134 print("try again", askretrycancel("Spam", "Try again?"))