Python collections.MutableSequence() Examples

def floatify_latlng(input_value):
    """
    Work around a JSON dict with string, not float, lat/lngs.

    Given anything (list/dict/etc) it will return that thing again, *but* any
    dict (at any level) that has only 2 elements lat & lng, will be replaced
    with the lat & lng turned into floats.

    If the API returns the lat/lng as strings, and not numbers, then this
    function will 'clean them up' to be floats.
    """
    if isinstance(input_value, collections.Mapping):
        if len(input_value) == 2 and sorted(input_value.keys()) == ['lat', 'lng']:
            # This dict has only 2 keys 'lat' & 'lon'
            return {'lat': float_if_float(input_value["lat"]), 'lng': float_if_float(input_value["lng"])}
        else:
            return dict((key, floatify_latlng(value)) for key, value in input_value.items())
    elif isinstance(input_value, collections.MutableSequence):
        return [floatify_latlng(x) for x in input_value]
    else:
        return input_value 

def repr_list(_list, indent):
    """Return a debug representation of a list or tuple."""
    # pprint represents lists and tuples in one row if possible. We want one
    # per row, so we iterate ourselves.
    if _list is None:
        return 'None'
    if isinstance(_list, MutableSequence):
        bm = '['
        em = ']'
    elif isinstance(_list, Iterable):
        bm = '('
        em = ')'
    else:
        raise TypeError("Object must be an iterable, but is a %s" %
                        type(_list))
    ret = bm + '\n'
    for value in _list:
        ret += _indent('%r,\n' % value, 2)
    ret += em
    ret = repr_text(ret, indent=indent)
    return ret.lstrip(' ') 

def remove(self, pointer):
        """Remove element from sequence, member from mapping.

        :param pointer: the path to search in
        :return: resolved document
        :rtype: Target
        """
        doc = deepcopy(self.document)
        parent, obj = None, doc
        try:
            # fetching
            for token in Pointer(pointer):
                parent, obj = obj, token.extract(obj, bypass_ref=True)

            # removing
            if isinstance(parent, Mapping):
                del parent[token]

            if isinstance(parent, MutableSequence):
                parent.pop(int(token))
        except Exception as error:
            raise Error(*error.args)

        return Target(doc) 

def _shell_join(seq):
    """
    Convert a nested list of strings to a shell command.

    Each string in the list is escaped as necessary to allow it to be
    passed to a shell as a single word. If an item is a list, it is a
    nested command, which will be escaped first, and then added as a
    single word to the top-level command.

    For example, ['su', 'root', '-c', ['apt-get', 'update']] becomes
    "su root -c 'apt-get update'".
    """
    result = []
    for word in seq:
        if isinstance(word, (tuple, MutableSequence)):
            word = _shell_join(word)
        escaped = shell_quote(word)
        result.append(escaped)
    return ' '.join(result) 

def floatify_latlng(input_value):
    """
    Work around a JSON dict with string, not float, lat/lngs.
    Given anything (list/dict/etc) it will return that thing again, *but* any
    dict (at any level) that has only 2 elements lat & lng, will be replaced
    with the lat & lng turned into floats.
    If the API returns the lat/lng as strings, and not numbers, then this
    function will 'clean them up' to be floats.
    """
    if isinstance(input_value, collections.Mapping):
        if len(input_value) == 2 and sorted(input_value.keys()) == ['lat', 'lng']:
            # This dict has only 2 keys 'lat' & 'lon'
            return {'lat': float_if_float(input_value["lat"]), 'lng': float_if_float(input_value["lng"])}
        else:
            return dict((key, floatify_latlng(value)) for key, value in input_value.items())
    elif isinstance(input_value, collections.MutableSequence):
        return [floatify_latlng(x) for x in input_value]
    else:
        return input_value 

def test_collections_as_base(self):

        class M(collections.Mapping): ...
        self.assertIsSubclass(M, typing.Mapping)
        self.assertIsSubclass(M, typing.Iterable)

        class S(collections.MutableSequence): ...
        self.assertIsSubclass(S, typing.MutableSequence)
        self.assertIsSubclass(S, typing.Iterable)

        class I(collections.Iterable): ...
        self.assertIsSubclass(I, typing.Iterable)

        class A(collections.Mapping, metaclass=abc.ABCMeta): ...
        class B: ...
        A.register(B)
        self.assertIsSubclass(B, typing.Mapping) 

def translate_strings(self, strings, target_language, source_language='en', optimized=True):
        assert isinstance(strings, collections.MutableSequence), \
            '`strings` should be a sequence containing string_types'
        assert not optimized, 'optimized=True is not supported in `GoogleAPITranslatorService`'
        if len(strings) == 0:
            return []
        elif len(strings) <= self.max_segments:
            setattr(self, 'translated_strings', getattr(self, 'translated_strings', []))
            response = self.service.translations() \
                .list(source=source_language, target=target_language, q=strings).execute()
            self.translated_strings.extend([t.get('translatedText') for t in response.get('translations')])
            return self.translated_strings
        else:
            self.translate_strings(strings[0:self.max_segments], target_language, source_language, optimized)
            _translated_strings = self.translate_strings(strings[self.max_segments:],
                                                         target_language, source_language, optimized)

            # reset the property or it will grow with subsequent calls
            self.translated_strings = []
            return _translated_strings 

def remove_key(self, key):
        # The parts of the ConfigSection that might contain "key"
        trackers = [self.validation_methods,
                    self._destinations,
                    self._restricted,
                    self._required_keys,
                    self.defaults,
                    self._values,
                    self._unvalidated_keys,
                    ]
        for tracker in trackers:
            if key in tracker:
                if isinstance(tracker, collections.MutableMapping):
                    del tracker[key]
                elif isinstance(tracker, collections.MutableSequence):
                    tracker.remove(key)
                elif isinstance(tracker, collections.MutableSet):
                    tracker.discard(key) 

def test_MutableSequence(self):
        for sample in [tuple, str]:
            self.assertNotIsInstance(sample(), MutableSequence)
            self.assertFalse(issubclass(sample, MutableSequence))
        for sample in [list]:
            self.assertIsInstance(sample(), MutableSequence)
            self.assertTrue(issubclass(sample, MutableSequence))
        self.assertFalse(issubclass(basestring, MutableSequence))
        self.validate_abstract_methods(MutableSequence, '__contains__', '__iter__',
            '__len__', '__getitem__', '__setitem__', '__delitem__', 'insert') 

def modifies_known_mutable(obj, attr):
    """This function checks if an attribute on a builtin mutable object
    (list, dict, set or deque) would modify it if called.  It also supports
    the "user"-versions of the objects (`sets.Set`, `UserDict.*` etc.) and
    with Python 2.6 onwards the abstract base classes `MutableSet`,
    `MutableMapping`, and `MutableSequence`.

    >>> modifies_known_mutable({}, "clear")
    True
    >>> modifies_known_mutable({}, "keys")
    False
    >>> modifies_known_mutable([], "append")
    True
    >>> modifies_known_mutable([], "index")
    False

    If called with an unsupported object (such as unicode) `False` is
    returned.

    >>> modifies_known_mutable("foo", "upper")
    False
    """
    for typespec, unsafe in _mutable_spec:
        if isinstance(obj, typespec):
            return attr in unsafe
    return False 

def hashable(x):
    if isinstance(x, MutableSequence):
        return tuple(x)
    elif isinstance(x, MutableMapping):
        return tuple([(k,v) for k,v in x.items()])
    else:
        return x 

def translate_loaded_file(self, filename, show_tokens=False):
        body = []
        self.filename = filename
        with open(filename, 'r') as f:
            sexps = parse(lex(f.read(), debug=show_tokens), filename)
            for sexp in sexps:
                if isinstance(sexp, MutableSequence):
                    sexp = tuple_it(sexp)
                if sexp is COMMENT:
                    continue
                pre, value = self.translate(sexp)
                body.extend(pre)
                body.append(value)
        return body 

def tuple_it(obj):
    return tuple(map(tuple_it, obj)) if isinstance(obj, MutableSequence) else obj 

def eval_tokens(tokens, globals=global_env, locals=None):
    sexps = parse(tokens.__iter__())
    for sexp in sexps:
        if isinstance(sexp, MutableSequence):
            sexp = tuple_it(sexp)
        if sexp is COMMENT:
            continue
        py_ast = translator.translate_sexp_to_interact(sexp)
        if py_ast is not None:
            code = compile(py_ast, '<string>', 'exec')
            if code is not None:
                exec(code, globals, locals) 

def tuple_it(obj):
    return tuple(map(tuple_it, obj)) if isinstance(obj, MutableSequence) else obj

#--- 

def translate_block(self, mochi_block, filename='<string>',
                        show_tokens=False):
        """Translate sexpressions into a Python AST.
        """
        sexps = parse(lex(mochi_block, debug=show_tokens), filename)
        body = []
        for sexp in sexps:
            if isinstance(sexp, MutableSequence):
                sexp = tuple_it(sexp)
            if sexp is COMMENT:
                continue
            pre, value = self.translate(sexp)
            body.extend([self.enclose(exp, True) for exp in pre])
            body.append(self.enclose(value, True))
        return ast.Module(body=body) 

def replace(self, pointer, value):
        """Replace element from sequence, member from mapping.

        :param pointer: the path to search in
        :param value: the new value
        :return: resolved document
        :rtype: Target
        """
        doc = deepcopy(self.document)
        parent, obj = None, doc
        try:
            # fetching
            for token in Pointer(pointer):
                parent, obj = obj, token.extract(obj, bypass_ref=True)

            # replace
            value = deepcopy(value)
            if isinstance(parent, Mapping):
                parent[token] = value

            if isinstance(parent, MutableSequence):
                parent[int(token)] = value
        except Exception as error:
            raise Error(*error.args)

        return Target(doc) 

def flatten(self, data_dict, parent_key='', sep='.'):
        '''对套嵌的dict进行flatten处理为单层dict

        :param dict data_dict: 需要处理的dict数据。

        :param str parent_key: 上层字典的key，默认为空字符串。

        :param str sep: 套嵌key flatten后的分割符， 默认为“.” 。
        '''

        out = {}

        def _flatten(x, parent_key, sep):
            if isinstance(x, collections.MutableMapping):
                for a in x:
                    _flatten(x[a], parent_key + a + sep, sep)
            elif isinstance(x, collections.MutableSequence):
                i = 0
                for a in x:
                    _flatten(a, parent_key + str(i) + sep, sep)
                    i += 1
            else:
                if not isinstance(x, ("".__class__, u"".__class__)):
                    x = str(x)
                out[parent_key[:-1].encode('utf-8')] = x

        _flatten(data_dict, parent_key, sep)
        return OrderedDict(out) 

def modifies_known_mutable(obj, attr):
    """This function checks if an attribute on a builtin mutable object
    (list, dict, set or deque) would modify it if called.  It also supports
    the "user"-versions of the objects (`sets.Set`, `UserDict.*` etc.) and
    with Python 2.6 onwards the abstract base classes `MutableSet`,
    `MutableMapping`, and `MutableSequence`.

    >>> modifies_known_mutable({}, "clear")
    True
    >>> modifies_known_mutable({}, "keys")
    False
    >>> modifies_known_mutable([], "append")
    True
    >>> modifies_known_mutable([], "index")
    False

    If called with an unsupported object (such as unicode) `False` is
    returned.

    >>> modifies_known_mutable("foo", "upper")
    False
    """
    for typespec, unsafe in _mutable_spec:
        if isinstance(obj, typespec):
            return attr in unsafe
    return False 

def modifies_known_mutable(obj, attr):
    """This function checks if an attribute on a builtin mutable object
    (list, dict, set or deque) would modify it if called.  It also supports
    the "user"-versions of the objects (`sets.Set`, `UserDict.*` etc.) and
    with Python 2.6 onwards the abstract base classes `MutableSet`,
    `MutableMapping`, and `MutableSequence`.

    >>> modifies_known_mutable({}, "clear")
    True
    >>> modifies_known_mutable({}, "keys")
    False
    >>> modifies_known_mutable([], "append")
    True
    >>> modifies_known_mutable([], "index")
    False

    If called with an unsupported object (such as unicode) `False` is
    returned.

    >>> modifies_known_mutable("foo", "upper")
    False
    """
    for typespec, unsafe in _mutable_spec:
        if isinstance(obj, typespec):
            return attr in unsafe
    return False 

def modifies_known_mutable(obj, attr):
    """This function checks if an attribute on a builtin mutable object
    (list, dict, set or deque) would modify it if called.  It also supports
    the "user"-versions of the objects (`sets.Set`, `UserDict.*` etc.) and
    with Python 2.6 onwards the abstract base classes `MutableSet`,
    `MutableMapping`, and `MutableSequence`.

    >>> modifies_known_mutable({}, "clear")
    True
    >>> modifies_known_mutable({}, "keys")
    False
    >>> modifies_known_mutable([], "append")
    True
    >>> modifies_known_mutable([], "index")
    False

    If called with an unsupported object (such as unicode) `False` is
    returned.

    >>> modifies_known_mutable("foo", "upper")
    False
    """
    for typespec, unsafe in _mutable_spec:
        if isinstance(obj, typespec):
            return attr in unsafe
    return False 

def modifies_known_mutable(obj, attr):
    """This function checks if an attribute on a builtin mutable object
    (list, dict, set or deque) would modify it if called.  It also supports
    the "user"-versions of the objects (`sets.Set`, `UserDict.*` etc.) and
    with Python 2.6 onwards the abstract base classes `MutableSet`,
    `MutableMapping`, and `MutableSequence`.

    >>> modifies_known_mutable({}, "clear")
    True
    >>> modifies_known_mutable({}, "keys")
    False
    >>> modifies_known_mutable([], "append")
    True
    >>> modifies_known_mutable([], "index")
    False

    If called with an unsupported object (such as unicode) `False` is
    returned.

    >>> modifies_known_mutable("foo", "upper")
    False
    """
    for typespec, unsafe in _mutable_spec:
        if isinstance(obj, typespec):
            return attr in unsafe
    return False 

def modifies_known_mutable(obj, attr):
    """This function checks if an attribute on a builtin mutable object
    (list, dict, set or deque) would modify it if called.  It also supports
    the "user"-versions of the objects (`sets.Set`, `UserDict.*` etc.) and
    with Python 2.6 onwards the abstract base classes `MutableSet`,
    `MutableMapping`, and `MutableSequence`.

    >>> modifies_known_mutable({}, "clear")
    True
    >>> modifies_known_mutable({}, "keys")
    False
    >>> modifies_known_mutable([], "append")
    True
    >>> modifies_known_mutable([], "index")
    False

    If called with an unsupported object (such as unicode) `False` is
    returned.

    >>> modifies_known_mutable("foo", "upper")
    False
    """
    for typespec, unsafe in _mutable_spec:
        if isinstance(obj, typespec):
            return attr in unsafe
    return False 

def _transform_list(self, model, params, transformation, target_shape):
        if not isinstance(params, MutableSequence):
            return
        member_model = model.member
        member_shape = member_model.name
        for i, item in enumerate(params):
            if member_shape == target_shape:
                params[i] = transformation(item)
            else:
                self._transform_parameters(
                    member_model, params[i], transformation, target_shape) 

def _formatValueForSummaryTable(k, v, enableColor):
        """Format the given value for a nice print in the summary table  """
        if isinstance(v, collections.MutableSequence):
            return " ".join([Alert._maybeColor(k, x, enableColor) for x in v])
        else:
            return Alert._maybeColor(k, v, enableColor) 

def modifies_known_mutable(obj, attr):
    """This function checks if an attribute on a builtin mutable object
    (list, dict, set or deque) would modify it if called.  It also supports
    the "user"-versions of the objects (`sets.Set`, `UserDict.*` etc.) and
    with Python 2.6 onwards the abstract base classes `MutableSet`,
    `MutableMapping`, and `MutableSequence`.

    >>> modifies_known_mutable({}, "clear")
    True
    >>> modifies_known_mutable({}, "keys")
    False
    >>> modifies_known_mutable([], "append")
    True
    >>> modifies_known_mutable([], "index")
    False

    If called with an unsupported object (such as unicode) `False` is
    returned.

    >>> modifies_known_mutable("foo", "upper")
    False
    """
    for typespec, unsafe in _mutable_spec:
        if isinstance(obj, typespec):
            return attr in unsafe
    return False 

def _transform_list(self, model, params, transformation, target_shape):
        if not isinstance(params, MutableSequence):
            return
        member_model = model.member
        member_shape = member_model.name
        for i, item in enumerate(params):
            if member_shape == target_shape:
                params[i] = transformation(item)
            else:
                self._transform_parameters(
                    member_model, params[i], transformation, target_shape) 

def _transform_list(self, model, params, transformation, target_shape):
        if not isinstance(params, MutableSequence):
            return
        member_model = model.member
        member_shape = member_model.name
        for i, item in enumerate(params):
            if member_shape == target_shape:
                params[i] = transformation(item)
            else:
                self._transform_parameters(
                    member_model, params[i], transformation, target_shape) 

def modifies_known_mutable(obj, attr):
    """This function checks if an attribute on a builtin mutable object
    (list, dict, set or deque) would modify it if called.  It also supports
    the "user"-versions of the objects (`sets.Set`, `UserDict.*` etc.) and
    with Python 2.6 onwards the abstract base classes `MutableSet`,
    `MutableMapping`, and `MutableSequence`.

    >>> modifies_known_mutable({}, "clear")
    True
    >>> modifies_known_mutable({}, "keys")
    False
    >>> modifies_known_mutable([], "append")
    True
    >>> modifies_known_mutable([], "index")
    False

    If called with an unsupported object (such as unicode) `False` is
    returned.

    >>> modifies_known_mutable("foo", "upper")
    False
    """
    for typespec, unsafe in _mutable_spec:
        if isinstance(obj, typespec):
            return attr in unsafe
    return False 

def testRepeatedFieldsAreSequences(self, message_module):
    m = message_module.TestAllTypes()
    self.assertIsInstance(m.repeated_int32, collections.MutableSequence)
    self.assertIsInstance(m.repeated_nested_message,
                          collections.MutableSequence)