pythonリスト、メタグループ(3)
7979 ワード
一、リスト
1.リストの作成
1.リストの作成
>>> name = ['gao', 'sam', 'snow', 'jey']
>>> type(name)
>>> name=list(['gao', 'sam', 'snow', 'jey']) # python 3.0+
>>> type(name)
>>> name = []
>>> type(name)
>>> name = list() # python 3.0+
>>> type(name)
2.
>>> name = ['Sam', 'Jey', 'Snow', 'Amy']
>>> name[2]
'Snow'
>>> name[1:]
['Jey', 'Snow', 'Amy']
>>> name[-2:]
['Snow', 'Amy']
>>> name[-1:-3:-1]
['Amy', 'Snow']
3.
>>> name = ['Sam', 'Jey', 'Snow']
>>> name.append('Yang')
>>> name
['Sam', 'Jey', 'Snow', 'Yang']
4.
>>> name
['Sam', 'Jey', 'Snow', 'Yang']
>>> name.insert(1, 'Long')
>>> name
['Sam', 'Long', 'Jey', 'Snow', 'Yang']
5.
>>> name
['Sam', 'Long', 'Jey', 'Snow', 'Yang']
>>> name[2]='Goo'
>>> name
['Sam', 'Long', 'Goo', 'Snow', 'Yang']
6.
>>> name
['Sam', 'Long', 'Goo', 'Snow', 'Yang']
>>> del name[0]
>>> name
['Long', 'Goo', 'Snow', 'Yang']
>>> name
['Long', 'Goo', 'Snow', 'Yang']
>>> name.remove('Goo')
>>> name
['Long', 'Snow', 'Yang']
>>> name = ['Sam', 'Jey', 'Snow', 'Yang']
>>> name.pop()
'Yang'
>>> name
['Sam', 'Jey', 'Snow']
>>> name.pop(1)
'Jey'
>>> name
['Sam', 'Snow']
7.
>>> name = ['Sam', 'Jey', 'Snow', 'Yang']
>>> girls=['Goo', 'Di']
>>> name.extend(girls)
>>> name
['Sam', 'Jey', 'Snow', 'Yang', 'Goo', 'Di']
8.
>>> name = ['Sam', 'Jey',['age', 'salary']]
>>> name2 = name.copy()
>>> name2
['Sam', 'Jey', ['age', 'salary']]
>>> name[0]='Sam2'
>>> name[2][0]='age2'
>>> name
['Sam2', 'Jey', ['age2', 'salary']]
>>> name2
['Sam', 'Jey', ['age2', 'salary']]
>>> name = ['Sam', 'Jey',['age', 'salary']]
>>> name2=name[:]
>>> name2
['Sam', 'Jey', ['age', 'salary']]
>>> name[0]='Sam2'
>>> name[2][0]='age2'
>>> name
['Sam2', 'Jey', ['age2', 'salary']]
>>> name2
['Sam', 'Jey', ['age2', 'salary']]
（ python2.0+）
>>> name = ['Sam', 'Jey', ['age', 'year']]
>>> name2 = list(name)
>>> name2
['Sam', 'Jey', ['age', 'year']]
>>> import copy
>>> name = ['Sam', 'Jey',['age', 'salary']]
>>> name2=copy.deepcopy(name)
>>> name[0]='Sam2'
>>> name[2][0]='age2'
>>> name
['Sam2', 'Jey', ['age2', 'salary']]
>>> name2
['Sam', 'Jey', ['age', 'salary']]
9.
>>> name = ['Sam', 'Jey', 'Sam',1, 9]
>>> name.count('Sam')
2
10.
>>> name = ['Sam', 'Jey', 'Sam',1, 9]
>>> name.sort()
Traceback (most recent call last):
File "", line 1, in
TypeError: '>> name = ['Sam', 'Jey', 'Sam']
>>> name.sort()
>>> name
['Jey', 'Sam', 'Sam']
>>> name = ['Sam', 'Jey', 'Sam','1', '9']
>>> name.sort()
>>> name
['1', '9', 'Jey', 'Sam', 'Sam']
>>> name.reverse()
>>> name
['Sam', 'Sam', 'Jey', '9', '1']
10.
>>> name = ['Sam', 'Jey', 'Sam','1', '9']
>>> name.index('Jey')
1
>>> name.index('aa')
Traceback (most recent call last):
File "", line 1, in
ValueError: 'aa' is not in list
11.
>>> name = ['Sam', 'Jey', 'Sam','1', '9']
>>> name.clear()
>>> name
[]
.
， ，
1.
>>> name=('Sam', 'Gao', 'jey')
>>> name
('Sam', 'Gao', 'jey')
>>> team=('ops',)
>>> team
('ops',)
>>> type(team)
2.