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Accessing dictionaries in python for beginners
Parameter Details
key = The desired key to lookup
value = The value to set or return
A real-life dictionary holds words and their meanings. As you can imagine, likewise, a Python dictionary holds key-value pairs. Also to be noted that they are Unordered and mutable.
mydict = {} #Empty dictionary
mydict = {'key' : 'value'} #Initialized dictionary
person = {'name':'xyz', 'age':23}myperson = dict() #empty dictionary
myperson = dict(name="xyz", age=23) #here we have given value to dict function
# while using dict function we dont need quotes or colons.myperson = dict(name="xyz", age=23) #creating a dict
myperson["email"] = "[email protected]" #adding email as key and its value to dictmyperson['new_list'] = [1, 2, 3] #adding new_list as key and [1,2,3] as valuemyperson['new_dict'] = {'nested_dict': 1} #new_dict is the key and {'nested_dict': 1} is the valuedel myperson['email'] #here key is deletedYes, we can iterate over dictionary. Such structures on which we can iterate are called ITERABLE and things which iterates, like 'i' in for loop, that 'i' is called ITERATOR(abstract explanation).
myperson = {'name':'xyz', 'age':23}
for key in myperson:
print(key, myperson[key],sep=" : ")
# key is iterated , so key is iterator heremyperson = {'name':'xyz', 'age':23}
for key,values in myperson.items():
print(key,values)myperson = {'name':'xyz', 'age':23}
for values in myperson.values():
print(values)27