python學習——修改、新增和刪除元素
阿新 • • 發佈:2019-02-18
在上週簡要的學習了一下python列表的一些操作,並做了做《python程式設計——從入門到實踐》第三章的一些例題。
3-1、3-2
names=['tony','tom','marry']
print(names[0])
print(names[1])
print(names[2])
print('hello,'+names[0])
print('hello,'+names[1])
print('hello,'+names[2])
3-4、3-5、3-6、3-9
names=['tony','tom','marry'] print('Would you like to eat dinner with me. '+names[0].title()+'?') print('Would you like to eat dinner with me. '+names[1].title()+'?') print('Would you like to eat dinner with me. '+names[2].title()+'?') print(names[0]+" can't come.") names[0]='jack' print('Would you like to eat dinner with me. '+names[0].title()+'?') print('Would you like to eat dinner with me. '+names[1].title()+'?') print('Would you like to eat dinner with me. '+names[2].title()+'?') print('I find a bigger table.') names.insert(0,'evelyn') names.insert(2,'karin') names.insert(5,'olof') print('Would you like to eat dinner with me. '+names[0].title()+'?') print('Would you like to eat dinner with me. '+names[1].title()+'?') print('Would you like to eat dinner with me. '+names[2].title()+'?') print('Would you like to eat dinner with me. '+names[3].title()+'?') print('Would you like to eat dinner with me. '+names[4].title()+'?') print('Would you like to eat dinner with me. '+names[5].title()+'?') print('I can only invite two person.') name=names.pop() print('sorry,'+name.title()+".I can't eat dinner with you.") name=names.pop() print('sorry,'+name.title()+".I can't eat dinner with you.") name=names.pop() print('sorry,'+name.title()+".I can't eat dinner with you.") name=names.pop() print('sorry,'+name.title()+".I can't eat dinner with you.") print(names[0].title()+',I can eat dinner with you.') print(names[1].title()+',I can eat dinner with you.') num=len(names) print('Finally,I invite '+str(num)+' persons.') del names[1] del names[0] print(names)
3-8
travel=['japan','england','france']
print(travel)
print(sorted(travel))
print(travel)
print(sorted(travel,reverse=True))
print(travel)
travel.reverse()
print(travel)
travel.reverse()
print(travel)
travel.sort()
print(travel)
travel.sort(reverse=True)
print(travel)