Pythonでの集合の詳細チュートリアル!
一、pythonのセット:
集合とは何か.
コレクション:python言語で提供される組み込みデータ構造は、リスト辞書と同様に可変タイプに属するシーケンスコレクションvalueのない辞書です.
1.コードは次のとおりです.
例:
2.実行結果:
例:
まとめ:
ヒント:ここでは、文章をまとめます.
集合とは何か.
コレクション:python言語で提供される組み込みデータ構造は、リスト辞書と同様に可変タイプに属するシーケンスコレクションvalueのない辞書です.
1.コードは次のとおりです.
例:
print('--------- {}------------')
s1={
1,2,3,1,2,4,5,}
print(s1)#
print('--------------- set() ---------------------------')
s2 = set(range(6))
print(s2)
print(set([3, 4, 5, 44]))
print(set((3, 4, 55,)))
print(set('python'))
print(set({
11, 22, 33}))
print(set())
print('-------------------in/not in-------------------')
s3={
10,20,30,40}
print(10 in s3)
print(100 not in s3)
print('-------------- -----------------------')
s3.add(88)
print(s3)
s3.update({
200,300,400})
print(s3)
s3.update([111,222,333])
s3.update((999,888,777))
print(s3)
print('----------------- ---------------------------')
s3.remove(111)
print(s3)
# s3.remove(1000000)
s3.discard(100000)#
print(s3)
s3.pop()# ,
print(s3)
s3.clear()#
print(s3)
print('---------- ---------------')
s4={
11,22,33,44}
s5={
22,33,44,11}
print(s4==s5)
print(s4!=s5)
print('------------- --------------------')
s44={
10,20,30,40,50,60}
s444={
10,20,30}
s4444={
10,100}
print(s444.issubset(s44))
print(s4444.issubset(s44))
print('------------- --------------------')
print(s44.issuperset(s444))
print(s44.issuperset(s4444))
print('--------------- ------------------')
print(s444.isdisjoint(s4444))
s55={
100,200,300}
s555={
10,20,30,}
print(s55.isdisjoint(s555))
print(' ')
print('-------------- -----------------')
s6={
10,20,30,40}
s66={
30,40,50,60}
print(s6.intersection(s66))
print(s6 & s66)
print('--------------- ------------------')
print(s6.union(s66))
print(s6|s66)
print('--------------- ------------------')
print(s6.difference(s66))
print(s6-s66)
print('--------------- ------------------')
print(s6.symmetric_difference(s66))
print(s6^s66)
print('------------------------ ------------------')
# :
print(' : ')
lst=[i*i for i in range(10)]
print(lst)
# :
print(' : ')
s7={
i*i for i in range(10)}
print(s7)
2.実行結果:
例:
--------- {
}------------
{
1, 2, 3, 4, 5}
--------------- set() ---------------------------
{
0, 1, 2, 3, 4, 5}
{
3, 4, 5, 44}
{
3, 4, 55}
{
'o', 't', 'p', 'y', 'n', 'h'}
{
33, 11, 22}
set()
-------------------in/not in-------------------
True
True
-------------- -----------------------
{
40, 10, 20, 88, 30}
{
40, 200, 10, 300, 400, 20, 88, 30}
{
999, 40, 200, 10, 777, 300, 333, 111, 400, 20, 888, 88, 222, 30}
----------------- ---------------------------
{
999, 40, 200, 10, 777, 300, 333, 400, 20, 888, 88, 222, 30}
{
999, 40, 200, 10, 777, 300, 333, 400, 20, 888, 88, 222, 30}
{
40, 200, 10, 777, 300, 333, 400, 20, 888, 88, 222, 30}
set()
---------- ---------------
True
False
------------- --------------------
True
False
------------- --------------------
True
False
--------------- ------------------
False
True
-------------- -----------------
{
40, 30}
{
40, 30}
--------------- ------------------
{
40, 10, 50, 20, 60, 30}
{
40, 10, 50, 20, 60, 30}
--------------- ------------------
{
10, 20}
{
10, 20}
--------------- ------------------
{
10, 50, 20, 60}
{
10, 50, 20, 60}
------------------------ ------------------
:
[0, 1, 4, 9, 16, 25, 36, 49, 64, 81]
:
{
0, 1, 64, 4, 36, 9, 16, 49, 81, 25}
, 0
まとめ:
ヒント:ここでは、文章をまとめます.
:
{}
s={‘python’,‘hello’,90}
set()
s=set(range(6))
print(s)
print(set([3,4,5,44]))
print(set((3,4,55,)))
print(set('python'))
print(set({11,22,33}))
print(set())
:
:
in/not in
:
add()
update()
:
remove() , keyerror
discard() , , ,
pop()
clear
:
== !=
issuperset
A B
issuperset
A B
isdisjoint true, false
print(' ')
print('-------------- -----------------')
s6={10,20,30,40}
s66={30,40,50,60}
print(s6.intersection(s66))
print(s6 & s66)
print('--------------- ------------------')
print(s6.union(s66))
print(s6|s66)
print('--------------- ------------------')
print(s6.difference(s66))
print(s6-s66)
print('--------------- ------------------')
print(s6.symmetric_difference(s66))
print(s6^s66)
:
{i*i for i in range(1,10)}
{} []