胡恩誠Python集合set清單list元組tuple字典dictionary
w3schools練習截圖
w3schools程式碼
#劉任昌集合set{},元組tuple(), 串列或清單list[],
#字典dict{key:value,鍵:值}
d = {2330:"台積電",2317:"鴻海",2454:"聯發科",6505:"台塑化"}
s = {"台積電", "鴻海", "聯發科","台塑化"}
t = ("台積電", "鴻海", "聯發科","台塑化")
list = ["台積電", "鴻海", "聯發科","台塑化"]
print(type(d),type(s),type(d),type(list))
print("台灣市場價值最大三家公司集合set列出")
print(s)
#練習迴圈
for a in s:
print(a)
print("聯發科位置:" + str(t.index("聯發科")))
"""整個區塊註解前後加上連續三個引號, str將數字轉成字串 才能 和其他字串相接the set list is unordered, meaning: the items will appear in a random order.
# Refresh this page to see the change in the result.
"""
w3schools集合方法
Python has a set of built-in methods that you can use on sets.| Method | Description |
|---|---|
| add() | Adds an element to the set |
| clear() | Removes all the elements from the set |
| copy() | Returns a copy of the set |
| difference() | Returns a set containing the difference between two or more sets |
| difference_update() | Removes the items in this set that are also included in another, specified set |
| discard() | Remove the specified item |
| intersection() | Returns a set, that is the intersection of two other sets |
| intersection_update() | Removes the items in this set that are not present in other, specified set(s) |
| isdisjoint() | Returns whether two sets have a intersection or not |
| issubset() | Returns whether another set contains this set or not |
| issuperset() | Returns whether this set contains another set or not |
| pop() | Removes an element from the set |
| remove() | Removes the specified element |
| symmetric_difference() | Returns a set with the symmetric differences of two sets |
| symmetric_difference_update() | inserts the symmetric differences from this set and another |
| union() | Return a set containing the union of sets |
| update() | Update the set with the union of this set and others |
w3schools串列或清單方法
Python has a set of built-in methods that you can use on lists.| Method | Description |
|---|---|
| append() | Adds an element at the end of the list |
| clear() | Removes all the elements from the list |
| copy() | Returns a copy of the list |
| count() | Returns the number of elements with the specified value |
| extend() | Add the elements of a list (or any iterable), to the end of the current list |
| index() | Returns the index of the first element with the specified value |
| insert() | Adds an element at the specified position |
| pop() | Removes the element at the specified position |
| remove() | Removes the item with the specified value |
| reverse() | Reverses the order of the list |
| sort() | Sorts the list |
w3schools集合方法
Python has two built-in methods that you can use on tuples.| Method | Description |
|---|---|
| count() | Returns the number of times a specified value occurs in a tuple |
| index() | Searches the tuple for a specified value and returns the position of where it was found |
僅copy
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