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Dictionaries may be familiar to you as hash maps. In this lesson, you will learn how to create them, get the values, and delete elements from the dict 阅读全文
posted @ 2017-12-11 01:34
Zhentiw
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List comprehensions provide a concise way to create new lists, where each item is the result of an operation applied to each member of an existing lis 阅读全文
posted @ 2017-12-10 23:24
Zhentiw
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isinstance("foo", str) isinstance(1, int) isinstance(4.0, float) 阅读全文
posted @ 2017-12-10 23:14
Zhentiw
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For example you want to know what methods are available in Python for String, you can do : Output: Now for example, we want to see How to use 'swapcas 阅读全文
posted @ 2017-12-10 02:46
Zhentiw
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Single quotes and double quotes can both be used to declare strings in Python. You can even use triple-double quotes! Learn when to use each in this l 阅读全文
posted @ 2017-12-09 23:05
Zhentiw
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Python scripts can be executed by passing the script name to the python command or created as executable commands that can run stand-alone. You’ll lea 阅读全文
posted @ 2017-12-09 17:59
Zhentiw
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In this lesson, you will learn what mutable and immutable objects are, and the difference between them. This understanding will help you determine whe 阅读全文
posted @ 2017-12-09 17:53
Zhentiw
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If you’ve used other programming languages, you may have learned that an empty object is not the same as an object that does not exist. In this lesson 阅读全文
posted @ 2017-12-09 17:49
Zhentiw
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Virtual Environments ensure that dependencies from one Python application don’t overwrite the dependencies of another application. In this lesson, you 阅读全文
posted @ 2017-12-09 17:41
Zhentiw
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In this lesson we'll talk about controlling the value for inputs, textareas, and select elements. We'll see how to manage the state ourselves while st 阅读全文
posted @ 2017-12-08 20:54
Zhentiw
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