dict10.py

import copy   
d={'Name':'karthi',
   'Rollno':12,
   'Marks':[100,90]
    }

d1=d.copy()
print (d1) #Output: {'Name': 'karthi', 'Rollno': 12, 'Marks': [100, 90]}

#modifying immutable data types
d['Rollno']=5
print (d) #Output: {'Name': 'karthi', 'Rollno': 5, 'Marks': [100, 90]}
#changes are not reflected in copied dictionary.
print (d1) #Output: {'Name': 'karthi', 'Rollno': 12, 'Marks': [100, 90]}

# modifying mutable datatypes
d['Marks'].append(99)
print (d) #Output: {'Name': 'karthi', 'Rollno': 5, 'Marks': [100, 90, 99]}
#changes are reflected in copied dictionary also.
print (d1)#Output: {'Name': 'karthi', 'Rollno': 12, 'Marks': [100, 90, 99]}

d2=copy.deepcopy(d1)
print (d2) #Output: {'Name': 'karthi', 'Rollno': 12, 'Marks': [100, 90, 99]}

#modifying immutabe data types
d1['Rollno']=15
print (d1) #Output:{'Name': 'karthi', 'Rollno': 15, 'Marks': [100, 90, 99]}
#changes are not reflected in copied dictionary.
print (d2) #Output: {'Name': 'karthi', 'Rollno': 12, 'Marks': [100, 90, 99]}

# modifying mutable datatypes
d1['Marks'].append(101)
print (d1) #Output: {'Name': 'karthi', 'Rollno': 15, 'Marks': [100, 90, 99, 101]}
#changes are not reflected in deep copied dictionary.
print (d2)#Output:{'Name': 'karthi', 'Rollno': 12, 'Marks': [100, 90, 99]}