10 examples of 'find key in dictionary python' in Python

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def _find_dict_in_list(list_of_dict, key, val):
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    """Given a list of dictionaries, return the first dictionary that has the
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    given key:value pair.
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    """
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    try:
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        for d in list_of_dict:
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            if (key, val) in d.items():
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                return d
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    except TypeError:
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        pass

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def _find_key(d, key):
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    if not d:
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        return None
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    for k, v in d.items()[:]:
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        if k == key:
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            return d
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        else:
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            result = _find_key(v, key)
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            if result is not None:
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                return result

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def __contains__(self, key):
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    return str(key) in self.data

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def dict_lookup(dic, key_path, default=None):
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    """
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    Look up value in a nested dict
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    Args:
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        dic: The dictionary to search
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        key_path: An iterable containing an ordered list of dict keys to
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                  traverse
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        default: Value to return in case nothing is found
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    Returns:
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        Value of the dict at the nested location given, or default if no value
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        was found
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    """
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    for k in key_path:
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        if k in dic:
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            dic = dic[k]
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        else:
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            return default
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    return dic

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def findkey(haystack, needle, default=None):
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    for k, v in haystack.items():
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        if v == needle:
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            return k
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    return default

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def TryGetValue(self,key,value):
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 """ TryGetValue(self: IDictionary[TKey,TValue],key: TKey) -> (bool,TValue) """
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 pass

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def __contains__(self, key):
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  if '.' not in key:
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    return dict.__contains__(self, key)
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  myKey, restOfKey = key.split('.', 1)
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  if myKey in self:
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    target = dict.__getitem__(self, myKey)
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  else:
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    return False
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  if not isinstance(target, dotdict):
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    return False
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  return restOfKey in target

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def __getitem__(self, key):
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    for k, v in self:
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        if key == k:
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            return v
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    raise KeyError

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def __getitem__(self, key):
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    if key in self.Dict[self.store]:
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        return self.Dict[self.store][key]

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def lookup(d, keys):
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    if not isinstance(keys, list):
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        keys = keys.split(".")
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    for k in keys:
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        if hasattr(d, "__getitem__"):
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            if k in d:
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                d = d[k]
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            else:
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                return None
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        else:
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            return None
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    return d