暖仔会飞的博客从字典中读取时使用默认值 dic = {"a":1,"b":2, "c":3, "d":4} key = "e" value = 0 if key in dic: value = dic[key] else: value = 0 value = dic.get("e",0) # 同时也可以将列表作为默认值value2 = dic.get...
IceqGrinder的博客及在每次添加列时判断Key是否存在 if 'c' not in dict.keys(): dict['c']=[] dict['c'].append({'var1': '777','var2': '188'}) 初始化Dict为其添加默认值(效率高) 转头一想,这个给不存在的Value-list,使用...