keys Method in Python Dictionary|Dictionary in Python|Fetching All Keys From Dictionary.

keys Method in Python Dictionary|Dictionary in Python|Fetching All Keys From Dictionary.
This video is part of python tutorial for beginners in hindi.In this video,i have explained about keys Method in Python Dictionary.This method is used to fetch all keys from a given dictionary.
you will learn:-
1) keys Method in Python Dictionary
2) Fetching All Keys From Dictionary
source code :-
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#view object in python """ 1. view of key-value pairs (using item() method) 2. view of key : (using keys() method) 3. view of item : (using values() method) """ #keys() method. """python keys() method is used to fetch all the keys from the dict. syntax: dict.keys() #no parameter. """ rank = {"karan":1,"raj":2,"ashish":3,"manish":4,"chandan":"fail"} keys_view = rank.keys() print(keys_view) ranks = {"karan":1,"raj":2,"ashish":3,"manish":4,"chandan":"fail"} keys_view = list(ranks.keys()) print(keys_view) for i in keys_view : print(f"{i} got {ranks[i]} rank in 12th") fees = {"karan":1200 ,"raj":1400,"ashish":1450} actual_fees= 1500 keys_view=list(fees.keys()) print(keys_view) for i in keys_view : print(f"{i} got discount of {(actual_fees- fees[i])/actual_fees*100} percentage") #values() method #It us used to know the value of the key. karan = {"maths":50,"social":64,"english":60,"Hindi":40,"science":76} print(karan.keys()) print(karan.values()) raj = {"maths":76,"social":89,"english":90,"Hindi":78,"science":90} marks = list(raj.values()) total = sum(marks) print(marks) print(total) #items() method in dictionary """ In python dictionary item() method js used to return the list with all keys with values. syntax: dict_name.items() """ shopping = {"phone":10000,"laptop":45000,"earphone":1000,"speaker":900} print(shopping) shopping = shopping.items() print(shopping) #return tuple in each element within a list. list_form = list(shopping) print(list_form) employee = {"mani":50000,"Sundar":40000,"gopal":70000} employee_list= employee.items() for employees in employee_list: print(f"The employee {employees[0]} earn {employees[1]} as per income tax department") #setdefault() method: """ syntax : dict_name.setdefault("key","value") #key is mandatory and value is optional """ chr1= {"a":1,"b":2,"c":3,"d":4,"e":5} print(chr1) chr2= chr1.setdefault("godd",8) #add this value by default. print(chr1) print(chr2)