In this post, we will see how to manage Dictionary with Python.
CREATE A DICTIONARY
# empty dictionary
dict1 ={}
# dictionary
dict2 = {1:"one", 2:"two", 3:"three"}
print(f"dictionary1: {dict1}")
print(f"dictionary2: {dict2}")
ADD ITEMS
# empty dictionary
dict1 ={}
# dictionary
dict2 = {1:"one", 2:"two", 3:"three"}
print(f"dictionary1: {dict1}")
print(f"dictionary2: {dict2}")
# add items
dict1[1]='one'
dict1[2]='two'
dict2[4]='four'
dict2[5]='five'
print(f"dictionary1: {dict1}")
print(f"dictionary2: {dict2}")
UPDATE ITEMS
# dictionary
dict1 = {1:"one", 2:"two", 3:"three"}
print(f"dictionary1: {dict1}")
#update value
dict1[1]='NewOne'
print(f"dictionary1: {dict1}")
DELETE ITEMS
# dictionary
dict1 = {1:"one", 2:"two", 3:"three"}
print(f"dictionary1: {dict1}")
#delete value using the key
del dict1[3]
print(f"dictionary1: {dict1}")
GET VALUES
# dictionary
dict1 = {1:"one", 2:"two", 3:"three"}
print("Dictionary: ", dict1)
# get value using the key
print(f"Value with key equal to 2: {dict1[2]}")
# With the method get, in case of key not present, the system
# will show a default value instead to generate an error
print(f"Key not present into dictionary: {dict1.get(5,'Key not present')}")
# print all items in a dictionary
for i in dict1:
print(f"Key: {i} - Value: {dict1[i]}")
