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2025-01-17 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Development >
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This article mainly introduces the relevant knowledge of what the characteristics of python dictionary merger are, the content is detailed and easy to understand, the operation is simple and fast, and has a certain reference value. I believe you will gain something after reading this article on the characteristics of python dictionary merger. Let's take a look at it.
Concept
1. Dictionaries in Python can be used as collections with | and | = as merge operators to solve the pain we felt when merging dictionaries in the past, hence the PEP 584.
2. Characteristics
At the grammatical level, it is characterized by adding merge and update operators for dictionary objects.
Merge Instanc
> > S1 = {1,2} > S2 = {2,3} > > S1 | S2 # S1 and S2 take union to generate a new collection; equivalent to s1.union (S2) {1,2,3} > > S1 | = S2 # S1 and S2 take union and update to S1; equivalent to s1.update (S2) > > S1 {1,2,3} Python is mainly used in:
1. Web development
2. Data science research
3. Web crawler
4. Embedded application development
5. Game development
6. Desktop application development.
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