René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Guard against jedi completion errors better","articleBody":"```\nbpython version 0.15.dev4 on top of Python 2.7.9 /Users/tomb/.virtualenvs/bpython/bin/python2.7\n\u003e\u003e\u003e\n\u003e\u003e\u003e\n\u003e\u003e\u003e\n\u003e\u003e\u003e\n\u003e\u003e\u003e class Foo():\n...     return x + 1\nTraceback (most recent call last):\n  File \"/Users/tomb/.virtualenvs/bpython/bin/bpython\", line 9, in \u003cmodule\u003e\n    load_entry_point('bpython==0.15.dev4', 'console_scripts', 'bpython')()\n  File \"/Users/tomb/Dropbox/code/bpython/bpython/curtsies.py\", line 79, in main\n    interactive=(not exec_args))\n  File \"/Users/tomb/Dropbox/code/bpython/bpython/curtsies.py\", line 177, in mainloop\n    process_event(e)\n  File \"/Users/tomb/Dropbox/code/bpython/bpython/curtsies.py\", line 135, in process_event\n    repl.process_event(e)\n  File \"/Users/tomb/Dropbox/code/bpython/bpython/curtsiesfrontend/repl.py\", line 487, in process_event\n    return self.process_key_event(e)\n  File \"/Users/tomb/Dropbox/code/bpython/bpython/curtsiesfrontend/repl.py\", line 563, in process_key_event\n    self.cursor_offset = len(self.current_line)\n  File \"/Users/tomb/Dropbox/code/bpython/bpython/curtsiesfrontend/repl.py\", line 1344, in _set_cursor_offset\n    self.update_completion()\n  File \"/Users/tomb/Dropbox/code/bpython/bpython/curtsiesfrontend/repl.py\", line 877, in update_completion\n    self.list_win_visible = BpythonRepl.complete(self, tab)\n  File \"/Users/tomb/Dropbox/code/bpython/bpython/repl.py\", line 606, in complete\n    history=self.history)\n  File \"/Users/tomb/Dropbox/code/bpython/bpython/autocomplete.py\", line 455, in get_completer_bpython\n    return get_completer(BPYTHON_COMPLETER, cursor_offset, line, **kwargs)\n  File \"/Users/tomb/Dropbox/code/bpython/bpython/autocomplete.py\", line 434, in get_completer\n    cursor_offset, line, **kwargs)\n  File \"/Users/tomb/Dropbox/code/bpython/bpython/autocomplete.py\", line 409, in matches\n    history=history)\n  File \"/Users/tomb/Dropbox/code/bpython/bpython/autocomplete.py\", line 369, in matches\n    completions = script.completions()\n  File \"/Users/tomb/.virtualenvs/bpython/lib/python2.7/site-packages/jedi/api/__init__.py\", line 155, in completions\n    user_stmt = self._parser.user_stmt_with_whitespace()\n  File \"/Users/tomb/.virtualenvs/bpython/lib/python2.7/site-packages/jedi/cache.py\", line 139, in wrapper\n    result = func(self)\n  File \"/Users/tomb/.virtualenvs/bpython/lib/python2.7/site-packages/jedi/parser/user_context.py\", line 226, in user_stmt_with_whitespace\n    user_stmt = self.user_stmt()\n  File \"/Users/tomb/.virtualenvs/bpython/lib/python2.7/site-packages/jedi/cache.py\", line 139, in wrapper\n    result = func(self)\n  File \"/Users/tomb/.virtualenvs/bpython/lib/python2.7/site-packages/jedi/parser/user_context.py\", line 216, in user_stmt\n    module = self.module()\n  File \"/Users/tomb/.virtualenvs/bpython/lib/python2.7/site-packages/jedi/parser/user_context.py\", line 255, in module\n    return self._parser().module\n  File \"/Users/tomb/.virtualenvs/bpython/lib/python2.7/site-packages/jedi/cache.py\", line 139, in wrapper\n    result = func(self)\n  File \"/Users/tomb/.virtualenvs/bpython/lib/python2.7/site-packages/jedi/parser/user_context.py\", line 209, in _parser\n    parser = FastParser(self._source, self._path)\n  File \"/Users/tomb/.virtualenvs/bpython/lib/python2.7/site-packages/jedi/parser/fast.py\", line 65, in __call__\n    p = super(CachedFastParser, self).__call__(source, module_path)\n  File \"/Users/tomb/.virtualenvs/bpython/lib/python2.7/site-packages/jedi/parser/fast.py\", line 199, in __init__\n    self._parse(code)\n  File \"/Users/tomb/.virtualenvs/bpython/lib/python2.7/site-packages/jedi/parser/fast.py\", line 302, in _parse\n    line_offset, nodes, not is_first)\n  File \"/Users/tomb/.virtualenvs/bpython/lib/python2.7/site-packages/jedi/parser/fast.py\", line 367, in _get_parser\n    top_module=self.module, no_docstr=no_docstr)\n  File \"/Users/tomb/.virtualenvs/bpython/lib/python2.7/site-packages/jedi/parser/__init__.py\", line 59, in __init__\n    self._parse()\n  File \"/Users/tomb/.virtualenvs/bpython/lib/python2.7/site-packages/jedi/parser/__init__.py\", line 567, in _parse\n    func.statements.append(pr.KeywordStatement(tok_str, s,\n  File \"/Users/tomb/.virtualenvs/bpython/lib/python2.7/site-packages/jedi/parser/fast.py\", line 38, in __getattr__\n    return getattr(self.parsers[0].module, name)\nIndexError: list index out of range\n```\n","author":{"url":"https://github.com/thomasballinger","@type":"Person","name":"thomasballinger"},"datePublished":"2015-02-17T19:58:30.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/483/bpython/issues/483"}