Python Tutorial - 11. Dictionaries and Tuples

In this python tutorial, we will understand the concept of “dictionaries and tuples”. We will understand what are dictionaries, “order in a dictionary”, how to access dictionary element, what is “tuples” and the difference between “list and tuple”.

Topics that are covered in this Python Video:
0:00 Introduction
0:20 What is the dictionary
1:42 Access dictionary element
3:03 Order in the dictionary
3:26 delete from the dictionary
5:22 in operator in the dictionary
6:40 tuples
7:42 Difference between list and tuple
9:14 Tuples are immutable

Next Video:

[malcolmhollett]

I've studied for almost 10 hours today, this music was the greatest thing ever

[ashuupdate]

at 5.23 you are printing key instead of k, so it is showing the value of previously stored key...

[prabavathim]

Your tutorial is awesome...Could you plz. tell me, how the "for k, v in d.items(): print(key, v) " is working ?

[shabbirhussain]

dic = dict()



n=input("How many inpurt do you need ?")
for i in range(0, n):
a = raw_input("Enter Key")
b = input("Enter value")
dic[a] = b

for k, v in dic.items():
print("KEY :", k, "Value ", v)

print(dic)

for k in dic:
print("KEYS : ", k, "Values :", dic[k] )

[Mohitraj-kqjn]

can you made video tutorial on django with trail full website

[ShinyArjunSingh]

wow man...made my life..
Nice one Subscribed...Keep'em comin....

[KishanKumar-xfcr]

Solution For Given Exercise:
name1=input("Enter Your First Name")
name2=input("Enter Your Second Name")
name3=input("Enter Your Third Name")
name4=input("Enter Your Fourth Name")
p=int(input("Enter Age Of name1"))
q=int(input("Enter Age Of name2"))
r=int(input("Enter Age Of name3"))
s=int(input("Enter Age Of name4"))
d={name1:p, name2:q, name3:r, name4:s}
print("Whose Age You Want To Know")
key=input("Enter Here")
if key in d :
print("Age:", d[key])
else :
print("Enter A Valid Input")
print(d)

[umarless]

Hi, I am not sure about my code..
Please check this answer and guide.

dict = {}
n = int(input("Enter total numbers of records : "))
for i in range(n):
i = input("Enter Name : ")
j = input("Enter Age : ")
dict[i] = j
search_name = input("Enter name for search : ")
if search_name in dict:
print(dict[search_name])
else:
print("Not Found")

[punitkanojia.]

Hi:
First of all your tutorial is very awesome and easy to grasp. Thank you for sharing the same.
i have a doubt with respect to dictionary
suppose i have a dictionary . d = {True: 'yes', 1: 'no', 1.0: 'maybe'}. while accessing the key of d[True] the value is shown as 'maybe', also if i access d[1] still i get the value as 'maybe'. Can you please help out for the same.
Thanks !

[deepaksrinivasan]

For 2nd exercise using dictionary:

dict={}

def add_and_multiply (a, b):
sum=a+b
product=a*b
dict[sum]=product
print(dict)
return dict


num1 = input("Enter Number 1:")
num2 = input("Enter Number 2:")
result = {}
result = add_and_multiply(int(num1), int(num2))

for k, v in dict.items():
print("Sum:", k, "and Product is:", v)

[mohamedsherif]

pls i need to check and download the answers, i can not find it on the mentioned link. please help

[Mohitraj-kqjn]

how can be print dictionary in same way as i declear it

[afrozkhan.]

assignment
#1
d={}
n=int(input("enter no of records: "))

for i in range(n):

global a, b
a=input("enter name ")
b=int(input("enter age "))
i=i+1
d[a] = b
print(d)

r=str(input("enter search name: "))
if r in d:
print(d[r])
else:
print("no match found")

#2
a=int(input("enter 1st number: "))
b=int(input("enter 2nd number: "))

def add_and_multiply(a, b):
add=a+b
multiply=a%b
return add, multiply

n=add_and_multiply(a, b)

print(n)

[piousringlearning]

Sir I need solution for below question. Can you please help me?

"probab_to_cate = {0.72: 'Admit',

0.72: 'NotAdmit'}

df['tmp'] = df['Chance of Admit '].map(probab_to_cate)

y = df['tmp']

I want to map probabilities upto 0.72 should come equal to "Admit" and all below than 0.72 should be equal to equal to "NotAdmit"
. I tried above code which is returning only 0.72 = equal to " Admit". Can you correct this code please.

[pablu_]

family = {"dad": 65, "mom": 54, "sister": 31, "brother": 26}
print("Enter a new member and assign an age")
new_member = input("Enter new member : ")
age = input("Enter persons age : ")
age = int(age)
family[new_member] = age
print(family)
print("Enter family member name, I will tell the age")
query_name = input("Enter any member from your family : ")
print("The age of ", query_name, "is", family[query_name])
for key in family:
print("Age of ", key, "is", family[key])

[calistussolomon]

Am i correct ?
Please confirm

Exercise : 1

name=str(input("Enter the name : "))
age=int(input("Enter the age :"))
family={"mom":36, "dad":56, "sis":22, "bro":19, "me":25}

family[name]=age
print(family)

find=str(input("Enter name to find age : "))
print("Age of", find, "is", family[find])

print()

for k, v in family.items():
print("Name:", k, "Age:", v)


Exercise : 2

def add_and_multiply(a=0, b=0):
print("Addition:", a+b)
print("Multiplication:", a*b)

x=int(input("Enter 1st number :"))
y=int(input("Enter 2nd number :"))
num=add_and_multiply(x, y)

[samirphuyal]

My name is Samir and when he checked "samir" in d
Haha

[nikunj]

number_of_family_memebers = int(input("Enter number of family members: "))
dic_of_family_members = {}
for i in
name = input('Enter name :')
age = int(input('Enter age: '))
dic_of_family_members[name] = age
query = input('Enter Name you want to query:')
if query in dic_of_family_members:
print('Age of', query, dic_of_family_members[query])
else:
print('I don''t know the age of', query)
print(dic_of_family_members)








def add_and_multiply(x, y):
return x + y, x * y




result = add_and_multiply(3, 5)
print(type(result))
print(result[0])
print(result[1])