[Solved] print key and only one value from dictionary

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in python 3.x you can use:

for k,v in std.items():
    print(k,v['Uid'])

in python 2.x:

for k,v in std.iteritems():
        print(k,v['Uid'])

python 3.x code:

std={}
n=int(input("How many Entries you have to fill:"))

for i in range (n):
    name=input("Enter name:")
    uid=input("ID:")
    age=input("Age:")
    print("----Marks----")
    math=input("Maths:")
    phy=input("Physics:")
    chem=input("Chemistry:")
    std[name]={'Uid':uid,'Age':age,'subject':{'math':math,'phy':phy,'chem':chem}}
    print('\n')
for k,v in std.items():
    print(k,v['Uid'])

input and results for 2 different names will be: 

How many Entries you have to fill:2

Enter name:John
ID:15895
Age:18
----Marks----
Maths:15
Physics:15
Chemistry:15


Enter name:Beck
ID:52256
Age:54
----Marks----
Maths:52
Physics:52
Chemistry:21


John 15895
Beck 52256

solved print key and only one value from dictionary