Mercurial > cpython-lru_cache-weakref

annotate Lib/idlelib/AutoComplete.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 2b93ee675ec4
children 8d320204d5d6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 """AutoComplete.py - An IDLE extension for automatically completing names.
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2
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3 This extension can complete either attribute names of file names. It can pop
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4 a window with all available names, for the user to select from.
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5 """
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6 import os
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7 import sys
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8 import string
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9
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10 from idlelib.configHandler import idleConf
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11
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12 # This string includes all chars that may be in a file name (without a path
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13 # separator)
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14 FILENAME_CHARS = string.ascii_letters + string.digits + os.curdir + "._~#$:-"
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15 # This string includes all chars that may be in an identifier
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16 ID_CHARS = string.ascii_letters + string.digits + "_"
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17
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18 # These constants represent the two different types of completions
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19 COMPLETE_ATTRIBUTES, COMPLETE_FILES = range(1, 2+1)
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20
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21 from idlelib import AutoCompleteWindow
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22 from idlelib.HyperParser import HyperParser
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23
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24 import __main__
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25
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26 SEPS = os.sep
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27 if os.altsep: # e.g. '/' on Windows...
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28 SEPS += os.altsep
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29
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30 class AutoComplete:
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31
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32 menudefs = [
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33 ('edit', [
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34 ("Show Completions", "<<force-open-completions>>"),
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35 ])
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36 ]
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37
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38 popupwait = idleConf.GetOption("extensions", "AutoComplete",
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39 "popupwait", type="int", default=0)
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40
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41 def __init__(self, editwin=None):
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42 self.editwin = editwin
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43 if editwin is None: # subprocess and test
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44 return
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45 self.text = editwin.text
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46 self.autocompletewindow = None
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47
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48 # id of delayed call, and the index of the text insert when the delayed
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49 # call was issued. If _delayed_completion_id is None, there is no
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50 # delayed call.
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51 self._delayed_completion_id = None
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52 self._delayed_completion_index = None
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53
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54 def _make_autocomplete_window(self):
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55 return AutoCompleteWindow.AutoCompleteWindow(self.text)
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56
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57 def _remove_autocomplete_window(self, event=None):
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58 if self.autocompletewindow:
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59 self.autocompletewindow.hide_window()
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60 self.autocompletewindow = None
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61
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62 def force_open_completions_event(self, event):
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63 """Happens when the user really wants to open a completion list, even
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64 if a function call is needed.
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65 """
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66 self.open_completions(True, False, True)
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67
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68 def try_open_completions_event(self, event):
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69 """Happens when it would be nice to open a completion list, but not
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70 really necessary, for example after an dot, so function
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71 calls won't be made.
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72 """
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73 lastchar = self.text.get("insert-1c")
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74 if lastchar == ".":
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75 self._open_completions_later(False, False, False,
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76 COMPLETE_ATTRIBUTES)
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77 elif lastchar in SEPS:
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78 self._open_completions_later(False, False, False,
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79 COMPLETE_FILES)
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80
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81 def autocomplete_event(self, event):
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82 """Happens when the user wants to complete his word, and if necessary,
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83 open a completion list after that (if there is more than one
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84 completion)
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85 """
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86 if hasattr(event, "mc_state") and event.mc_state:
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87 # A modifier was pressed along with the tab, continue as usual.
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88 return
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89 if self.autocompletewindow and self.autocompletewindow.is_active():
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90 self.autocompletewindow.complete()
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91 return "break"
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92 else:
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93 opened = self.open_completions(False, True, True)
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94 if opened:
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95 return "break"
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96
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97 def _open_completions_later(self, *args):
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98 self._delayed_completion_index = self.text.index("insert")
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99 if self._delayed_completion_id is not None:
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100 self.text.after_cancel(self._delayed_completion_id)
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101 self._delayed_completion_id = \
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102 self.text.after(self.popupwait, self._delayed_open_completions,
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103 *args)
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104
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105 def _delayed_open_completions(self, *args):
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106 self._delayed_completion_id = None
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107 if self.text.index("insert") != self._delayed_completion_index:
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108 return
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109 self.open_completions(*args)
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110
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111 def open_completions(self, evalfuncs, complete, userWantsWin, mode=None):
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112 """Find the completions and create the AutoCompleteWindow.
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113 Return True if successful (no syntax error or so found).
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114 if complete is True, then if there's nothing to complete and no
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115 start of completion, won't open completions and return False.
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116 If mode is given, will open a completion list only in this mode.
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117 """
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118 # Cancel another delayed call, if it exists.
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119 if self._delayed_completion_id is not None:
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120 self.text.after_cancel(self._delayed_completion_id)
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121 self._delayed_completion_id = None
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122
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123 hp = HyperParser(self.editwin, "insert")
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124 curline = self.text.get("insert linestart", "insert")
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125 i = j = len(curline)
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126 if hp.is_in_string() and (not mode or mode==COMPLETE_FILES):
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127 self._remove_autocomplete_window()
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128 mode = COMPLETE_FILES
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129 while i and curline[i-1] in FILENAME_CHARS:
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130 i -= 1
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131 comp_start = curline[i:j]
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132 j = i
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84df082dd216 Autocompletion of filenames now support alternate separators, e.g. the
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133 while i and curline[i-1] in FILENAME_CHARS + SEPS:
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134 i -= 1
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135 comp_what = curline[i:j]
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136 elif hp.is_in_code() and (not mode or mode==COMPLETE_ATTRIBUTES):
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137 self._remove_autocomplete_window()
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138 mode = COMPLETE_ATTRIBUTES
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139 while i and curline[i-1] in ID_CHARS:
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140 i -= 1
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141 comp_start = curline[i:j]
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142 if i and curline[i-1] == '.':
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143 hp.set_index("insert-%dc" % (len(curline)-(i-1)))
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144 comp_what = hp.get_expression()
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145 if not comp_what or \
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146 (not evalfuncs and comp_what.find('(') != -1):
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147 return
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148 else:
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149 comp_what = ""
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150 else:
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151 return
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152
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153 if complete and not comp_what and not comp_start:
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154 return
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155 comp_lists = self.fetch_completions(comp_what, mode)
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156 if not comp_lists[0]:
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157 return
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158 self.autocompletewindow = self._make_autocomplete_window()
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159 self.autocompletewindow.show_window(comp_lists,
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160 "insert-%dc" % len(comp_start),
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161 complete,
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162 mode,
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163 userWantsWin)
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164 return True
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165
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166 def fetch_completions(self, what, mode):
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167 """Return a pair of lists of completions for something. The first list
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168 is a sublist of the second. Both are sorted.
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169
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170 If there is a Python subprocess, get the comp. list there. Otherwise,
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171 either fetch_completions() is running in the subprocess itself or it
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172 was called in an IDLE EditorWindow before any script had been run.
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173
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174 The subprocess environment is that of the most recently run script. If
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175 two unrelated modules are being edited some calltips in the current
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176 module may be inoperative if the module was not the last to run.
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177 """
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178 try:
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179 rpcclt = self.editwin.flist.pyshell.interp.rpcclt
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180 except:
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181 rpcclt = None
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182 if rpcclt:
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183 return rpcclt.remotecall("exec", "get_the_completion_list",
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184 (what, mode), {})
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185 else:
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186 if mode == COMPLETE_ATTRIBUTES:
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187 if what == "":
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188 namespace = __main__.__dict__.copy()
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189 namespace.update(__main__.__builtins__.__dict__)
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190 bigl = eval("dir()", namespace)
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191 bigl.sort()
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192 if "__all__" in bigl:
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193 smalll = sorted(eval("__all__", namespace))
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194 else:
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195 smalll = [s for s in bigl if s[:1] != '_']
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196 else:
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197 try:
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198 entity = self.get_entity(what)
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199 bigl = dir(entity)
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200 bigl.sort()
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201 if "__all__" in bigl:
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202 smalll = sorted(entity.__all__)
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203 else:
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204 smalll = [s for s in bigl if s[:1] != '_']
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205 except:
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206 return [], []
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207
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208 elif mode == COMPLETE_FILES:
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209 if what == "":
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210 what = "."
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211 try:
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212 expandedpath = os.path.expanduser(what)
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213 bigl = os.listdir(expandedpath)
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214 bigl.sort()
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215 smalll = [s for s in bigl if s[:1] != '.']
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216 except OSError:
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217 return [], []
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218
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219 if not smalll:
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220 smalll = bigl
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221 return smalll, bigl
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222
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223 def get_entity(self, name):
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224 """Lookup name in a namespace spanning sys.modules and __main.dict__"""
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225 namespace = sys.modules.copy()
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226 namespace.update(__main__.__dict__)
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227 return eval(name, namespace)