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Python基本教學 Day11

Day10 參考答案、set集合的建立與提供的函數

Day10 參考答案

  1. 合法：a,d,f,g；不合法：b,e是保留字，c是數字開頭

    （a）

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    （b）
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    （c）
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    （d）
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    （e）
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    （f）
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    （g）
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    Image Not Showing Possible Reasons
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    Image Not Showing Possible Reasons
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    Image Not Showing Possible Reasons
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    Image Not Showing Possible Reasons
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    Image Not Showing Possible Reasons
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    Image Not Showing Possible Reasons
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    Image Not Showing Possible Reasons
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    Image Not Showing Possible Reasons
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    Image Not Showing Possible Reasons
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    Image Not Showing Possible Reasons
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    Image Not Showing Possible Reasons
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Day11 set集合的建立與提供的函數

要建立一個集合，可以利用大括號{}將元素括起來，或是呼叫set來完成

set(obj) 依照obj內容建立一個集合

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s1.add(x) 將元素x添加到s1中
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s1.clear() 移除集合s1中的所有元素
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s1.difference(s2) 傳回存在s1，但不存在於s2的集合（取差集，即s1-s2）
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s1.discard(x) 刪除s1中指定的元素x，若x不存在則不做任何處理
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s1.intersection(s2) 傳回s1和s2的交集
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s1.isdisjoint(s2) 判斷s1和s2是否沒有相同的元素，若沒有則回傳True
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s1.issubset(s2) 判斷s1是否為s2的子集合
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s1.issuperset(s2) 判斷s1是否為s2的父集合
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s1.pop() 從s1隨機移除一個元素，並傳回移除的元素值
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s1.remove(x) 將x從集合s1中刪除，若x不存在則回傳錯誤訊息
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s1.union(s2) 傳回s1和s2的聯集
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s1.update(s2) 將s2中不存在s1的元素加入s1
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題目：https://hackmd.io/@RshQciPYTE2wmLLiZx4JAA/Sk7OUSoOA

參考資料：https://docs.python.org/zh-tw/3/tutorial/index.html

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Josh Liu
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