python:practice class dict add,del,amend,check

new dict

dict={}

dict1=dict((()))

dict2=dict.fromkeys([1,2,3,4],[2,3,9])

dict={'key':value','key':'value','key':'value'}

dict['key']='value'

dict.popitem()   

del dict

dict.clear

dict.add

dict.remove

dict.setdefault

dict={():{},():{},}

dict['key']='value'