#understand dictionaries in python 

#lets create couple of dictionaries. lets start with student ID and name 

A={1:"praveen", 2:"chandrika", 3: "myra", 4:"pinkey"}
#print the keys
print(A.keys())

#print the values
print(A.values())

#print the full dictonary

print(A)
print(A[3])

A[5]="Ramagopal"
print(A)

print(4 in A)