We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
multistring needs a __hash__ method
In old ttk you could do something like

``` python
foo = multistring("foo")
foodict = {foo: "bar"}
assert 'foo' in foodict
```

It seems this no longer works - not sure why, but a `__hash__` method that returns `hash(str(self))` should fix the problem i believe

@claudep @julen any thoughts on this?


--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `translate/misc/multistring.py`
Content:
```
1 # -*- coding: utf-8 -*-
2 #
3 # Copyright 2006 Zuza Software Foundation
4 #
5 # This file is part of translate.
6 #
7 # translate is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 2 of the License, or
10 # (at your option) any later version.
11 #
12 # translate is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 # GNU General Public License for more details.
16 #
17 # You should have received a copy of the GNU General Public License
18 # along with this program; if not, see <http://www.gnu.org/licenses/>.
19 
20 """Supports a hybrid Unicode string that can also have a list of alternate
21 strings in the strings attribute
22 """
23 
24 import warnings
25 
26 import six
27 
28 from .deprecation import RemovedInTTK2Warning
29 
30 
31 def _create_text_type(newtype, string, encoding):
32     """Helper to construct a text type out of characters or bytes. Required to
33     temporarily preserve backwards compatibility. Must be removed in TTK2.
34     """
35     if isinstance(string, six.text_type):
36         return six.text_type.__new__(newtype, string)
37 
38     warnings.warn(
39         'Passing non-ASCII bytes as well as the `encoding` argument to '
40         '`multistring` is deprecated. Always pass unicode characters instead.',
41         RemovedInTTK2Warning, stacklevel=2,
42     )
43     return six.text_type.__new__(newtype, string or six.binary_type(), encoding)
44 
45 
46 class multistring(six.text_type):
47 
48     def __new__(newtype, string=u"", *args, **kwargs):
49         encoding = kwargs.pop('encoding', 'utf-8')
50         if isinstance(string, list):
51             if not string:
52                 raise ValueError("multistring must contain at least one string")
53             newstring = _create_text_type(newtype, string[0], encoding)
54             newstring.strings = [newstring] + [multistring.__new__(newtype, altstring) for altstring in string[1:]]
55         else:
56             newstring = _create_text_type(newtype, string, encoding)
57             newstring.strings = [newstring]
58         return newstring
59 
60     def __init__(self, *args, **kwargs):
61         super(multistring, self).__init__()
62         if not hasattr(self, "strings"):
63             self.strings = []
64 
65     def __cmp__(self, otherstring):
66         def cmp_compat(s1, s2):
67             # Python 3 compatible cmp() equivalent
68             return (s1 > s2) - (s1 < s2)
69         if isinstance(otherstring, multistring):
70             parentcompare = cmp_compat(six.text_type(self), otherstring)
71             if parentcompare:
72                 return parentcompare
73             else:
74                 return cmp_compat(self.strings[1:], otherstring.strings[1:])
75         elif isinstance(otherstring, six.text_type):
76             return cmp_compat(six.text_type(self), otherstring)
77         elif isinstance(otherstring, bytes):
78             return cmp_compat(self.encode('utf-8'), otherstring)
79         elif isinstance(otherstring, list) and otherstring:
80             return cmp_compat(self, multistring(otherstring))
81         else:
82             return cmp_compat(str(type(self)), str(type(otherstring)))
83 
84     def __hash__(self):
85         return hash(''.join(self.strings))
86 
87     def __ne__(self, otherstring):
88         return self.__cmp__(otherstring) != 0
89 
90     def __eq__(self, otherstring):
91         return self.__cmp__(otherstring) == 0
92 
93     def __repr__(self):
94         _repr = u"multistring(%r)" % (
95             [six.text_type(item) for item in self.strings]
96         )
97         return _repr.encode('utf-8') if six.PY2 else _repr
98 
99     def __str__(self):
100         if six.PY2:
101             return self.encode('utf-8')
102         return super(multistring, self).__str__()
103 
104     def replace(self, old, new, count=None):
105         if count is None:
106             newstr = multistring(super(multistring, self).replace(old, new))
107         else:
108             newstr = multistring(super(multistring, self).replace(old, new, count))
109         for s in self.strings[1:]:
110             if count is None:
111                 newstr.strings.append(s.replace(old, new))
112             else:
113                 newstr.strings.append(s.replace(old, new, count))
114         return newstr
115
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/translate/misc/multistring.py b/translate/misc/multistring.py
--- a/translate/misc/multistring.py
+++ b/translate/misc/multistring.py
@@ -82,7 +82,7 @@
             return cmp_compat(str(type(self)), str(type(otherstring)))
 
     def __hash__(self):
-        return hash(''.join(self.strings))
+        return hash(str(self))
 
     def __ne__(self, otherstring):
         return self.__cmp__(otherstring) != 0

{"golden_diff": "diff --git a/translate/misc/multistring.py b/translate/misc/multistring.py\n--- a/translate/misc/multistring.py\n+++ b/translate/misc/multistring.py\n@@ -82,7 +82,7 @@\n             return cmp_compat(str(type(self)), str(type(otherstring)))\n \n     def __hash__(self):\n-        return hash(''.join(self.strings))\n+        return hash(str(self))\n \n     def __ne__(self, otherstring):\n         return self.__cmp__(otherstring) != 0\n", "issue": "multistring needs a __hash__ method\nIn old ttk you could do something like\n\n``` python\nfoo = multistring(\"foo\")\nfoodict = {foo: \"bar\"}\nassert 'foo' in foodict\n```\n\nIt seems this no longer works - not sure why, but a `__hash__` method that returns `hash(str(self))` should fix the problem i believe\n\n@claudep @julen any thoughts on this?\n\n", "before_files": [{"content": "# -*- coding: utf-8 -*-\n#\n# Copyright 2006 Zuza Software Foundation\n#\n# This file is part of translate.\n#\n# translate is free software; you can redistribute it and/or modify\n# it under the terms of the GNU General Public License as published by\n# the Free Software Foundation; either version 2 of the License, or\n# (at your option) any later version.\n#\n# translate is distributed in the hope that it will be useful,\n# but WITHOUT ANY WARRANTY; without even the implied warranty of\n# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n# GNU General Public License for more details.\n#\n# You should have received a copy of the GNU General Public License\n# along with this program; if not, see <http://www.gnu.org/licenses/>.\n\n\"\"\"Supports a hybrid Unicode string that can also have a list of alternate\nstrings in the strings attribute\n\"\"\"\n\nimport warnings\n\nimport six\n\nfrom .deprecation import RemovedInTTK2Warning\n\n\ndef _create_text_type(newtype, string, encoding):\n    \"\"\"Helper to construct a text type out of characters or bytes. Required to\n    temporarily preserve backwards compatibility. Must be removed in TTK2.\n    \"\"\"\n    if isinstance(string, six.text_type):\n        return six.text_type.__new__(newtype, string)\n\n    warnings.warn(\n        'Passing non-ASCII bytes as well as the `encoding` argument to '\n        '`multistring` is deprecated. Always pass unicode characters instead.',\n        RemovedInTTK2Warning, stacklevel=2,\n    )\n    return six.text_type.__new__(newtype, string or six.binary_type(), encoding)\n\n\nclass multistring(six.text_type):\n\n    def __new__(newtype, string=u\"\", *args, **kwargs):\n        encoding = kwargs.pop('encoding', 'utf-8')\n        if isinstance(string, list):\n            if not string:\n                raise ValueError(\"multistring must contain at least one string\")\n            newstring = _create_text_type(newtype, string[0], encoding)\n            newstring.strings = [newstring] + [multistring.__new__(newtype, altstring) for altstring in string[1:]]\n        else:\n            newstring = _create_text_type(newtype, string, encoding)\n            newstring.strings = [newstring]\n        return newstring\n\n    def __init__(self, *args, **kwargs):\n        super(multistring, self).__init__()\n        if not hasattr(self, \"strings\"):\n            self.strings = []\n\n    def __cmp__(self, otherstring):\n        def cmp_compat(s1, s2):\n            # Python 3 compatible cmp() equivalent\n            return (s1 > s2) - (s1 < s2)\n        if isinstance(otherstring, multistring):\n            parentcompare = cmp_compat(six.text_type(self), otherstring)\n            if parentcompare:\n                return parentcompare\n            else:\n                return cmp_compat(self.strings[1:], otherstring.strings[1:])\n        elif isinstance(otherstring, six.text_type):\n            return cmp_compat(six.text_type(self), otherstring)\n        elif isinstance(otherstring, bytes):\n            return cmp_compat(self.encode('utf-8'), otherstring)\n        elif isinstance(otherstring, list) and otherstring:\n            return cmp_compat(self, multistring(otherstring))\n        else:\n            return cmp_compat(str(type(self)), str(type(otherstring)))\n\n    def __hash__(self):\n        return hash(''.join(self.strings))\n\n    def __ne__(self, otherstring):\n        return self.__cmp__(otherstring) != 0\n\n    def __eq__(self, otherstring):\n        return self.__cmp__(otherstring) == 0\n\n    def __repr__(self):\n        _repr = u\"multistring(%r)\" % (\n            [six.text_type(item) for item in self.strings]\n        )\n        return _repr.encode('utf-8') if six.PY2 else _repr\n\n    def __str__(self):\n        if six.PY2:\n            return self.encode('utf-8')\n        return super(multistring, self).__str__()\n\n    def replace(self, old, new, count=None):\n        if count is None:\n            newstr = multistring(super(multistring, self).replace(old, new))\n        else:\n            newstr = multistring(super(multistring, self).replace(old, new, count))\n        for s in self.strings[1:]:\n            if count is None:\n                newstr.strings.append(s.replace(old, new))\n            else:\n                newstr.strings.append(s.replace(old, new, count))\n        return newstr\n", "path": "translate/misc/multistring.py"}], "after_files": [{"content": "# -*- coding: utf-8 -*-\n#\n# Copyright 2006 Zuza Software Foundation\n#\n# This file is part of translate.\n#\n# translate is free software; you can redistribute it and/or modify\n# it under the terms of the GNU General Public License as published by\n# the Free Software Foundation; either version 2 of the License, or\n# (at your option) any later version.\n#\n# translate is distributed in the hope that it will be useful,\n# but WITHOUT ANY WARRANTY; without even the implied warranty of\n# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n# GNU General Public License for more details.\n#\n# You should have received a copy of the GNU General Public License\n# along with this program; if not, see <http://www.gnu.org/licenses/>.\n\n\"\"\"Supports a hybrid Unicode string that can also have a list of alternate\nstrings in the strings attribute\n\"\"\"\n\nimport warnings\n\nimport six\n\nfrom .deprecation import RemovedInTTK2Warning\n\n\ndef _create_text_type(newtype, string, encoding):\n    \"\"\"Helper to construct a text type out of characters or bytes. Required to\n    temporarily preserve backwards compatibility. Must be removed in TTK2.\n    \"\"\"\n    if isinstance(string, six.text_type):\n        return six.text_type.__new__(newtype, string)\n\n    warnings.warn(\n        'Passing non-ASCII bytes as well as the `encoding` argument to '\n        '`multistring` is deprecated. Always pass unicode characters instead.',\n        RemovedInTTK2Warning, stacklevel=2,\n    )\n    return six.text_type.__new__(newtype, string or six.binary_type(), encoding)\n\n\nclass multistring(six.text_type):\n\n    def __new__(newtype, string=u\"\", *args, **kwargs):\n        encoding = kwargs.pop('encoding', 'utf-8')\n        if isinstance(string, list):\n            if not string:\n                raise ValueError(\"multistring must contain at least one string\")\n            newstring = _create_text_type(newtype, string[0], encoding)\n            newstring.strings = [newstring] + [multistring.__new__(newtype, altstring) for altstring in string[1:]]\n        else:\n            newstring = _create_text_type(newtype, string, encoding)\n            newstring.strings = [newstring]\n        return newstring\n\n    def __init__(self, *args, **kwargs):\n        super(multistring, self).__init__()\n        if not hasattr(self, \"strings\"):\n            self.strings = []\n\n    def __cmp__(self, otherstring):\n        def cmp_compat(s1, s2):\n            # Python 3 compatible cmp() equivalent\n            return (s1 > s2) - (s1 < s2)\n        if isinstance(otherstring, multistring):\n            parentcompare = cmp_compat(six.text_type(self), otherstring)\n            if parentcompare:\n                return parentcompare\n            else:\n                return cmp_compat(self.strings[1:], otherstring.strings[1:])\n        elif isinstance(otherstring, six.text_type):\n            return cmp_compat(six.text_type(self), otherstring)\n        elif isinstance(otherstring, bytes):\n            return cmp_compat(self.encode('utf-8'), otherstring)\n        elif isinstance(otherstring, list) and otherstring:\n            return cmp_compat(self, multistring(otherstring))\n        else:\n            return cmp_compat(str(type(self)), str(type(otherstring)))\n\n    def __hash__(self):\n        return hash(str(self))\n\n    def __ne__(self, otherstring):\n        return self.__cmp__(otherstring) != 0\n\n    def __eq__(self, otherstring):\n        return self.__cmp__(otherstring) == 0\n\n    def __repr__(self):\n        _repr = u\"multistring(%r)\" % (\n            [six.text_type(item) for item in self.strings]\n        )\n        return _repr.encode('utf-8') if six.PY2 else _repr\n\n    def __str__(self):\n        if six.PY2:\n            return self.encode('utf-8')\n        return super(multistring, self).__str__()\n\n    def replace(self, old, new, count=None):\n        if count is None:\n            newstr = multistring(super(multistring, self).replace(old, new))\n        else:\n            newstr = multistring(super(multistring, self).replace(old, new, count))\n        for s in self.strings[1:]:\n            if count is None:\n                newstr.strings.append(s.replace(old, new))\n            else:\n                newstr.strings.append(s.replace(old, new, count))\n        return newstr\n", "path": "translate/misc/multistring.py"}]}