in Keyword and looping on Dictionaries

d = {"name" : "Adrika",

     "age": 14,

     "class" : 9,

     "d1": {"name" : "Anika", "age": 3, "class" : 2}}

# Using in keyword

if "name" in d:

    print("Yes")

else:

    print("No")

# Looping on dictionaries

# Looping on keys

for i in d:

    print(i)

# Looping on values

for i in d:   # method 1

    print(d[i])

for i in d.values():  # method 2

    print(i)