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

4
5
Awgiedawgie 440215 points

                                    #a dictionary
dict = {
  "key": "value",
  "other_key": "value"
}

#get a value from the dictionary using the key
print(dict["key"])

#you can also get a value from the dictionary using a normal index:
print(dict[1])

4 (5 Votes)
0
3.88
8
Awgiedawgie 440215 points

                                    thisdictionary = {'key':'value','key1':'value1'}
print(thisdictionary['key'])

3.88 (8 Votes)
0
4
3
A-312 69370 points

                                    my_dict = {"Key": "Value"}
# Dictionary format

print(my_dict["Key"])
# Prints out "Value"

my_animals = {"Dog": "Percy",
              "Cat": "Fluffy",
              "Turtle": "Bennedict"}
# Multiple items in a dictionary, all separated by a comma

for animal in my_animals:
  print(my_animals[animal])
# Prints the names of each of the pets

4 (3 Votes)
0
4
9
Awgiedawgie 440215 points

                                    d = {'key1':'value1','key2':'value2'}
print(d) # to print full dictionary
l=d.keys
print(l)   # to print keys
b=d.values
print(b)#to print values in dictionary

4 (9 Votes)
0
4.2
10
Lionel Aguero 33605 points

                                    shapes={"square": 90, "triangle": 60}

4.2 (10 Votes)
0
3.63
8
Awgiedawgie 440215 points

                                    # Dictionaries in Python

ages = {"John": 43, "Bob": 24, "Ruth": 76} # Marked by { at beginning and a } at end

# ^^^ Has sets of keys and values, like the 'John' and 43 set. These two values must be seperated by a colon

# ^^^ Sets of values seperated by commas.

3.63 (8 Votes)
0
4
8
Awgiedawgie 440215 points

                                    tel = {'jack': 4098, 'sape': 4139}
tel['guido'] = 4127
print(tel)
# OUTPUT {'jack': 4098, 'sape': 4139, 'guido': 4127}
print(tel['jack'])
# OUTPUT 4098
del tel['sape']
tel['irv'] = 4127
print(tel)
# OUTPUT {'jack': 4098, 'guido': 4127, 'irv': 4127}
print(list(tel))
# OUTPUT ['jack', 'guido', 'irv']
print(sorted(tel))
# OUTPUT ['guido', 'irv', 'jack']
print('guido' in tel)
# OUTPUT True
print('jack' not in tel)
# OUTPUT False

4 (8 Votes)
0
5
1
Awgiedawgie 440215 points

                                    #A dictionary has key-value pairs. Here 1,2,3 are the keys and Item1,Item2,Item3 
#are their values respectively. 
dictionaryName = { 1: "Item1", 2: "Item2", 3: "Item3"}

#retrieving value of a particular key
dictionaryName[1]

#retrieving all the keys in a dictionary
dictionaryName.keys()

#retrieving all the values in a dictionary
dictionaryName.values()

5 (1 Votes)
0
3.2
5
Krish 100200 points

                                    my_dict = {"key": "value", "a": 1, 2: "b"}
print(my_dict["key"])
# Output: value
print(my_dict["a"])
# Output: 1
print(my_dict[2])
# Output: b

3.2 (5 Votes)
0
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