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a = "python" b = a[::-1] #result b is "nohtyp" 阅读全文
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window.getch([y, x]) Get a character. Note that the integer returned does not have to be in ASCII range: function keys, keypad keys and so on return n 阅读全文
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Defining the Encoding 阅读全文
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Given a string of length one, return an integer representing the Unicode code point of the character when the argument is a unicode object, or the val 阅读全文
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Collections is a high-performance container datatypes. defaultdict objects 众所周知，在Python中如果访问字典中不存在的键，会引发KeyError异常（JavaScript中如果对象中不存在某个属性，则返回undefine 阅读全文