分类:dict
2021
04-07
如下所示:dict.get(key,default=None)key?字典中要查找的键。default?如果指定键的值不存在时,返回该默认值值。{'1*':9,'2*':6,'**':15}.values()Out[377]:dict_values([9,6,15]){'1*':9,'2*':6,'**':15}.keys()Out[378]:dict_keys(['1*','2*','**']){'1*':9,'2*':6,'**':15}.items()Out[379]:dict_items([('1*',9),('2*',6),('**',15)]){'1*':9,'2*':6,'**':15}.get('1*')Out[380]:9{'1*...
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2021
03-10
1、字典(dict)dict={‘name':‘Zara',‘age':7,‘class':‘First'}1.1字典——字符串返回:printtype(str(dict)),str(dict)1.2字典——元组返回:(‘age',‘name',‘class')printtuple(dict)1.3字典——元组返回:(7,‘Zara',‘First')printtuple(dict.values())1.4字典——列表返回:[‘age',‘name',‘class']printlist(dict)1.5字典——列表printdict.values2、元组tup=(1,2,3,4,5)2.1元组——...
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2020
10-20
JsonToDictimportjsonjsonData='{"a":1,"b":2,"c":3,"d":4,"e":5}';print(jsonData)print(type(jsonData))text=json.loads(jsonData)print(text)print(type(text))#######################{"a":1,"b":2,"c":3,"d":4,"e":5}<class'str'>{'a':1,'b':2,'c':3,'d':4,'e':5}<class'dict'>DictToJsonimportjsontextDict={"a":1,"b":2,"c":3,"d":4,"e":5}print(textDict)print(type(textDict))#字典转化为jsontex...
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定义字典并直接输出,结果输出结果中文是乱码展示d={'name':'lily','age':18,'sex':'女','no':1121}printd输出结果:{'age':18,'no':1121,'name':'lily','sex':'\xe5\xa5\xb3'}解决方法:d={'name':'lily','age':18,'sex':'女','no':1121}printjson.dumps(d,encoding='utf-8',ensure_ascii=False)输出结果:{"age":18,"no":1121,"name":"lily","sex":"女"}内容扩展:Python中列表或字典输出乱码的解决方法问题:P...
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2020
10-06
对于一个Dict:test_dict={1:5,2:4,3:3,4:2,5:1}想要求key值大于等于3的所有项:print({k:vfork,vintest_dict.items()ifk>=3})得到{3:3,4:2,5:1}想要求value值大于等于3的所有项:print({k:vfork,vintest_dict.items()ifv>=3}){1:5,2:4,3:3}如果想要求k或者v某一个就取一个即可:#-*-coding:utf-8-*-__author__='ShawDa'test_dict={1:5,2:4,3:3,4:2,5:1}print({k:vfork,vintest_dic...
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我就废话不多说了,大家还是直接看代码吧!importjsona={u'content':{u'address_detail':{u'province':u'\u5409\u6797\u7701',u'city':u'\u957f\u6625\u5e02',u'street_number':u'',u'district':u'',u'street':u'',u'city_code':53},u'point':{u'y':u'43.89833761',u'x':u'125.31364243'},u'address':u'\u5409\u6797\u7701\u957f\u6625\u5e02'},u'status':0,u'address':u'CN|\u5409\u6797|\u957f\u6625...
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先看一个需求fromcollectionsimportdefaultdict"""需求:统计user_list中字母出现的次数"""user_dict={}user_list=['A','B','C','A','C','C']#第一种方式foriteminuser_list:ifitemnotinuser_dict:user_dict[item]=1else:user_dict[item]+=1print(user_dict)#{'A':2,'B':1,'C':3}#第二种方式user_dict={}user_list=['A','B','C','A','C','C']foriteminuser_list:user_d...
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