python的格式化輸出
#python?格式化輸出
##%?對(duì)于未知變量類型，用這樣就不太方便了
name='lisi'
age=45
print('my?name?is?%s,my?age?is?%s?'?%(name,str(age)))
##format?不用考慮類型
name='lisi'
age=45
print('my?name?is?{0},my?age?is?{1}'.format(name,age))
##實(shí)戰(zhàn)岛抄，輸出名片
info='''
????name={0}
????age={1}
????high={2}
????jobs={3}
????address={4}
'''
print('-------------------')
print(info.format('liuming',22,178,'developer','beijing'))
print('-------------------')
#實(shí)戰(zhàn)衬衬，列表的增刪改查
##append
students=['zhangsan','lisi','wangwu','chenliu']
newstudent='aa'
students.append(newstudent)
print(students)
print('class?students?is?：%s'?%(students))
students.remove('lisi')
print(students)
##remove?pop
#合并班級(jí)?extend()合并列表
students2=['yy','hh']
students.extend(students2)
print(students)
#指定刪除列表某元素
students.remove('yy')
print(students)
import?json
print(dir(json))
myinfo={'name':'zhangsan','age':44}
jsonInfo=json.dumps(myinfo)#字典轉(zhuǎn)化成json
print(type(jsonInfo))?
##json轉(zhuǎn)化成字典
dictInfo=?json.loads(jsonInfo)#json加載jsonInfo的值給dictInfo##json轉(zhuǎn)化成字典
print(type(dictInfo))
##
a='{"name":"zhangsan"}'#這是JSON格式险毁，外邊單引號(hào)翠胰，里面必須是雙引號(hào)棺聊。
print(json.loads(a))#將a轉(zhuǎn)化成字典格式
