# import shelve # # f = shelve.open('shelve_text') # #存 # f['info'] = {'name':'xuxu'} # f['shop'] = {'price':'100'} # # #取 # dat = f.get('info') # print(dat) d = {'name':'xuxu','age':'25'} print(d['name']) print(d.get('name')) print(d.get('sex'))#None print(d.get('sex','male'))#没有默认值male，有的话返回正确结果 print(d.get('name','male'))#xuxu