In this example, .items() returns a view object that yields key-value pairs one at a time and allows you to iterate through them.If you take a closer look at the individual items that .items() yields, then you’ll note that they’re tuple objects:...
# Create a 'defaultdict' object 'result' with a default value of an empty list. result = defaultdict(list) # Iterate through the dictionaries passed as arguments. for el in dicts: # Iterate through the keys and values in each dictionary. for key in el: # Append the value associated with...
These modules support various data models including document stores, key-value pairs, wide column stores, and graph databases, each optimized for specific use cases and scaling requirements. ModuleDatabase TypeMain Features pymongo Document Native BSON support, GridFS redis-py Key-Value Pipelining, pu...
Sequences can also be thought of as a tuple-like object or a list-like object. Tuples, strings, and lists are all sequences. See What is a sequence for more on sequences. Mapping A dictionary-like object. An object which stores key-value pairs and supports key lookups using square bra...
{1:"one",2:"two",3:"three"}# valid dictionary# tuple as a keymy_dict = {(1,2):"one two",3:"three"}# invalid dictionary# Error: using a list as a key is not allowedmy_dict = {1:"Hello", [1,2]:"Hello Hi"}# valid dictionary# string as a key, list as a valuemy_...
▶ The mysterious key type conversionclass SomeClass(str): pass some_dict = {'s': 42}Output:>>> type(list(some_dict.keys())[0]) str >>> s = SomeClass('s') >>> some_dict[s] = 40 >>> some_dict # expected: Two different keys-value pairs {'s': 40} >>> type(list(...
# input promptprompt="the answer to the ultimate question of life, the universe, and everything is "# Encode the prompt using the tokenizer and prepend a special token (128000)tokens=[128000]+tokenizer.encode(prompt)print(tokens)# Print the encoded tokens# Convert the list of tokens into a...
importstringdefclean_descriptions(descriptions):# prepare translation table for removing punctuationtable = str.maketrans('','', string.punctuation)forkey, desc_listindescriptions.items():foriinrange(len(desc_list)): desc = desc_list[i]# tokenizedesc = desc.split()# convert to lower casedesc ...
也可以使用形如 kwarg=value 的关键字参数 来调用函数。例如下面的函数: def parrot(voltage, state='a stiff', action='voom', type='Norwegian Blue'): print("-- This parrot wouldn't", action, end=' ') print("if you put", voltage, "volts through it.") print("-- Lovely plumage, the"...
2、A tuple is an immutable list. A tuple can not be changed in any way once it is created. 3、A set is an unordered “bag” of unique values. A single set can contain values of any immutable datatype. 4、A dictionary is an unordered set of key-value pairs. keys are unique and ...