dictionary output python

#Creating dictionaries dict1 = {'color': 'blue', 'shape': 'square', 'volume':40} dict2 = {'color': 'red', 'edges': 4, 'perimeter':15} #Creating new pairs and updating old ones dict1['area'] = 25 #{'color': 'blue', 'shape': 'square', 'volume': 40, 'area': 25} dict2['perimeter'] = 20 #{'color': 'red', 'edges': 4, 'perimeter': 20} #Accessing values through keys print(dict1['shape']) #You can also use get, which doesn't cause an exception when the key is not found dict1.get('false_key') #returns None dict1.get('false_key', "key not found") #returns the custom message that you wrote #Deleting pairs dict1.pop('volume') #Merging two dictionaries dict1.update(dict2) #if a key exists in both, it takes the value of the second dict dict1 #{'color': 'red', 'shape': 'square', 'area': 25, 'edges': 4, 'perimeter': 20} #Getting only the values, keys or both (can be used in loops) dict1.values() #dict_values(['red', 'square', 25, 4, 20]) dict1.keys() #dict_keys(['color', 'shape', 'area', 'edges', 'perimeter']) dict1.items() #dict_items([('color', 'red'), ('shape', 'square'), ('area', 25), ('edges', 4), ('perimeter', 20)])

dictionary in python

# Dictionaries in Python are used to store set of data like Key: Value pair

# the syntax of a dictionary in Python is very simple we use {} inside that
	# we define {Key: Value}, to separate multiple values we use','
programming_dictionary = {
    "Bug": "An error in a program that prevents the program from running as expected.",
  
    "Function": "A piece of code that you can easily call over and over again.",
  
  	"Loop": "The action of doing sommething again and again",
}
# to retrieve the values from a dictionary we use the Key name as an Index
# retrieving the Function's definition
print(programming_dictionary["Function"])	# this will print the definition of Function

# if you wanna print all the entries in the dictionary you can do that by for loop
for key in programming_dictionary:
  print(programming_dictionary[key])	# prints all entries
  
# adding items to a dictionary
# the following code will add another entry to the dictionary called Variable
programming_dictionary["Variable"] = "The label to store some sort of data"
print(programming_dictionary["Variable"])

# editing the values of a key 
# editing the value of variable
programming_dictionary["Variable"] = "Variables are nothing but reserved memory locations to store values. This means that when you create a variableyou reserve some space in memory"

# if you learnt something from this please upvote it

Posted by: Guest on January-03-2021

Code answers related to "dictionary output python"

Code answers related to "Python"

Browse Popular Code Answers by Language

Answers for "dictionary output python"

Code answers related to "dictionary output python"

Code answers related to "Python"

Python Answers by Framework

Browse Popular Code Answers by Language

Popular Programming Languages

Advertisements

Company

Compilers

Help

Connect with us