Python字典 2

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Python字典 2

动态创建字典，并添加到列表

dictionaries=[]
mark=1
for dic in range(30): dictionary={"first":"Python","second":"VB.net","third":"C#","mark":mark}
dictionaries.append(dictionary)
mark+=1
for d in dictionaries
print(d)

dictionaries=[]

mark=1

for dic in range(30): dictionary={"first":"Python","second":"VB.net","third":"C#","mark":mark}

dictionaries.append(dictionary)

mark=mark+1

for d in dictionaries[:3]:

print(d)

这里的for d in dictionarys[:3]:

一行，用于限制只显示前三行

dictionarys=[]
mark=1
for dic in range(0,9): dictionary={"first":"Python","second":"VB.net","third":"C#","mark":mark}
dictionarys.append(dictionary)
mark=mark+1
for d in dictionarys[3:5]:
print(d)

在字典里嵌套列表

dictionary={"first":"python","second":"VB.net","third":["css","javascript","flash"]}
for dic in dictionary["third"]:
print(dic)

字典里嵌套列表

dictionary={"first":["python","VB.net","C#"],"second":[“ css”,”JavaScript”,”Flash”]}

for key,values in dictionary.items():

print("\n"+key.title()+"列表值为：")

for val in values:

      print("\t"+val.title())

字典里嵌套字典

dictionary={"first":{"one":"python","two":"VB.net","three":"C#"},"second":{"one":"css","two":"javascript","three":"flash"}}
for key,values in dictionary.items():
    print("\n"+key.title()+"字典内容为：")
    for k,val in values.items():
        print("\t键为："+k)
        print("\t值为："+val+"\n")

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