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This article mainly explains "the characteristics and use of dictionaries in Python". Friends who are interested might as well take a look. The method introduced in this paper is simple, fast and practical. Now let the editor take you to learn the characteristics and use of dictionaries in Python.

A dictionary can be regarded as a Xinhua dictionary. If you want to look up a Chinese character, you have to add a page number through pinyin, side, and other methods to find the Chinese character. In python's dictionary, this "pinyin" and "side" is called key (key), which is value (value).

1. Dictionaries store elements one by one in the way of key-value. Because of the one-to-one correspondence, the key must be unique.

2. The dictionary uses {}, which is an unordered collection of key-value.

Example

Example: dict= {"1": "I am the value of key 1", "xxxx": "I am the value of key is xxxx"} print (dict) / / output {'1values:' I am the value of key 1', 'xxxx':' I am the value of key xxxx'} print (dict.get ("1")) / / output I am print (dict.keys ()) / / this function outputs all key in the dictionary In this example, the output dict_keys (['1customers,' xxxx']) print (dict.values ()) / / this function outputs all the value in the dictionary. In this example, the output dict_values (['I am the value of key is 1','I am the value of key for xxxx']) to this point. I believe you have a deeper understanding of the "characteristics and use of dictionaries in Python", so you might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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