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This article mainly introduces what is the dictionary and collection in python, which has certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article. Let Xiaobian take you to understand it together.

Dictionary/Set Understanding

Just as we use list inference, we can also use dictionary/set inference. They are easy to use and equally effective. This is an example.

testDict = {i: i * i for i in xrange(10)} testSet = {i * 2 for i in xrange(10)}print(testSet)print(testDict)#set([0, 2, 4, 6, 8, 10, 12, 14, 16, 18])#{0: 0, 1: 1, 2: 4, 3: 9, 4: 16, 5: 25, 6: 36, 7: 49, 8: 64, 9: 81}

Note-the only difference between the two statements is. Also, to run the above code in Python 3, replace with.

Thank you for reading this article carefully. I hope that Xiaobian's article "What are dictionaries and collections in python" will be helpful to everyone. At the same time, I hope that everyone will support you a lot and pay attention to the industry information channel. More relevant knowledge is waiting for you to learn!

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