列表、元组、字典、集合的定义与操作

l = ['Michael','Bob','Tracy']
l.append('Rose')
l.pop()
t = ('Michael','Bob','Tracy')
print(l)

['Michael', 'Bob', 'Tracy']

scores = [90,80,70]

d = {'Michael':90,'Bob':80,'Tracy':70}
d['Bob'] = 68
d['Rose'] = 86
d.pop('Bob')

print(d)

{'Michael': 90, 'Tracy': 70, 'Rose': 86}

s1 = ['Michael','Bob','Tracy']
s2 = {'Michael',1,2}
print(s1,s2)

['Michael', 'Bob', 'Tracy'] {1, 2, 'Michael'}

totalStr = '201709080015张帼妍 201709080016庞伟豪 201709080017梁嘉莹  201709080022廖婧仪  201709080023许云鹏'
totalList = totalStr.split('totalStr')
totalSet = set(totalList)
print(totalList)
print(totalSet)
for s in totalSet:
    n = totalList.count(s)
    print(s,n)

['201709080015张帼妍 201709080016庞伟豪 201709080017梁嘉莹  201709080022廖婧仪  201709080023许云鹏']
{'201709080015张帼妍 201709080016庞伟豪 201709080017梁嘉莹  201709080022廖婧仪  201709080023许云鹏'}
201709080015张帼妍 201709080016庞伟豪 201709080017梁嘉莹  201709080022廖婧仪  201709080023许云鹏 1