PyAddBook, Python - rextester

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#Python 2.7.17

#Python Address Book: demonstration of nested dictionary
#this code is created by Rezaul Hoque on November 30,2021;contact: jewelmrh@yahoo.com
#note: codes shared by Rezaul Hoque on rextester are not for sale; they are created and shared to facilitate the algorithm learning process; many like Hoque use this platform to practice programming ;Rezaul hopes his contribution helps others to fine tune their learning;

#Creating Dictionary
print ('Creating Dictionary')
a= { 'name': 'xyz',
      'address': {'house':'00', 'road': '#2','city':'nul'}}
print(a)
#Add Item
print('Add Item')
a['contact']={'phone':'0###0','mail':'no@nono.com'}
print(a)
#Creating new nested dictionary using dict() constructor
print('Creating new nested dictionary using dict() constructor')
b=dict(origin={'nationality':'bbb','country':'nnnn'} ,name = 'efg', )
print(b)
#Merging two dictionaries
print('Merging two dictionaries')
a.update(b)
print(a)

#Accessing values
print('Accessing values')
print(a['name'])
print(a['address']['city'])
print(a.get('address').get('road'))

#Deleting item
print('Deleting item')
a.pop('contact')
del a['address']
print(a)

#iterate through nested dictionary
print('Iterate through nested dictionary')
for key, val in a.items():
                      if type(val) is dict:
                             for inKey, inVal in val.items():
                                     print(inKey+':', inVal)
                      else:
                                     print(key+':', val)

[ + ] Show input
Absolute running time: 0.15 sec, cpu time: 0.02 sec, memory peak: 7 Mb, absolute service time: 0,22 sec