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This article mainly introduces python how to add a dictionary, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand.

A beautiful way to add a dictionary

When designing data structures, dictionaries are necessary! Most of the time we will use the following dictionary update method, of course, better is the defaultdict in the collections module!

Comments: dict.update is relatively approachable, this dict (dict,**options) usage I saw for the first time is also froze some, what the hell, now see more, also get used to it!

What are the data types of python? the data type of python: 1. Numeric types, including int (integer), long (long integer), and float (floating point). two。 String, which is of type str and type unicode, respectively. 3. Boolean, Python Boolean is also used for logical operations and has two values: True (true) and False (false). 4. List, the list is the most frequently used data type in Python, and any data type can be placed in the collection. 5. Tuples are identified by "()", and internal elements are separated by commas. 6. A dictionary is a collection of key-value pairs. 7. A collection is an unordered, non-repeating combination of data.

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