Chapter1 集合基本操作

@c4tman
##tuple
print('##tuple##')
tuple = (1,2,3,'12312',1)
print('lenght: ', len(tuple))
print('index[0]: ', tuple[0])
print('index[-1]: ', tuple[-1])
for t in tuple:
    print(t, ' ', end='')
print()

##list
print('##list##')
myList  = [1,2,3,4,5,6,7, 'Bob']
print('length: ', len(myList))
print('index[0]: ', myList[0])
print('index[-1]: ', myList[-1])
for i in myList:
    print(i, ' ', end = "")
print()
myList.append(10)
myList.pop(0)
myList[0] = -1
for i in myList:
    print(i, ' ', end = "")
print()
myList.clear()

##set
print('##set##')
mySet  = set([1,2,3,4,5,6])
print('length: ', len(mySet))
print('key 8 in mySet: ', 8 in mySet)
mySet.add(8)
mySet.remove(8)
s1 = set([1,2,3])
s2 = set([2,3,4])
print('s1&s2: ', s1 & s2)
print('s1|s2: ', s1 | s2)
for s in mySet:
    print(s, ' ', end = '')
mySet.clear()
print()

##dict
print('##dict##')
myDict = {'A':1, 'B':2, 'C':3}
print('length: ', len(myDict))
print('key A in dict: ', 'A' in myDict)
print('value in \'A\': ', myDict['A'])
myDict['D'] = 4
print('value in \'D\': ', myDict.get('D'))
print('-1 if key \'E\' not exist: ', myDict.get('E', -1))
myDict.pop('D')
for key in myDict.keys():
    print(key, ' : ',myDict.get(key))