'Compute matches when text is a simple name.
Return a list of all keywords, built-in functions and names currently
defined in self.namespace that match.'

def global_matches(self, text):

    import keyword
    matches = []
    seen = {'__builtins__'}
    n = len(text)
    for word in keyword.kwlist:
        if (word[:n] == text):
            seen.add(word)
            if (word in {'finally', 'try'}):
                word = (word + ':')
            elif (word not in {'False', 'None', 'True', 'break', 'continue', 'pass', 'else'}):
                word = (word + '    ')
            matches.append(word)
    for nspace in [self.namespace, builtins.__dict__]:
        for (word, val) in nspace.items():
            if ((word[:n] == text) and (word not in seen)):
                seen.add(word)
                matches.append(self._callable_postfix(val, word))
    return matches
