9. For loop [Python 3 Programming Tutorials]

The topic which I will explain to you today is about “for statement” also known as “loop statement”, “for” loop, “while statement”, how to create “for” loop, why “for” loop is used.

Topics that are covered in this Video:
0:00 Overview
2:55 Create a for loop (Syntax of for loop)
6:53 Why for loop is used?
7:02 Use of range() function
18:51 While statement

🔖Hashtags🔖

#forloopinpython #pythonforloop #tutorial #loopinpython #python #pythonloops #pythonloops

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[ausafumarkhan]

Dear sir, I am watching the tutorials from last 7 days. The way of explaining the concept with example is very much effective and easy to get the things..

[AchuVlogs]

I watched different tutorials in loops, and this is the best video I have ever seen! Easily understandable!

[puddinfacekiki]

I watched different videos from other tutorial regarding loops and this one I understand the most. Thank you!

[prajwalbhandari]

well you have created amazing tutorial till now, few months back I started with C and now these tutorials are really good, i think i will be watching whole play

[vasusharma]

the printing of square of only odd numbers
this approach is also effective :
for i in range(1, 10, 2):
print(i*i)

[starman]

you explain in a great way with those explanations beside the code is awesome.Thanks

[ganeshgunjal]

very useful assignments sir... they are definitly developing logic... most of time i use solution due to lack of logic.. but still it is useful... thanks for taking efforts for us....

[mdasif-zebc]

Sir without declaring the items how you item put in print plz clearfy this doubt

[nadeemhalbhavi]

thnks sir.
incase if you want to print only odd number then use i%2!=0

[TechBalu]

for i in range(1, 6):
s=i**2
if s%2==1:
print(s)
#output :
1
9
25

[alishmed]

great channel to learn data science skills with projects.

[arasukiasyan]

where can I get more challenging exercises. you are such a great teacher I need harder problems

[karthikchekuri]

how do i check if my code is good and it is the optimised code or not? for instance
for the one of the practice example:


1. This solution is given by dhaval (codebasics)

month_list = ["January", "February", "March", "April", "May"]
expense_list = [2340, 2500, 2100, 3100, 2980]
e = input("Enter expense amount: ")
e = int(e)
month = -1
for i in range(len(expense_list)):
if e == expense_list[i]:
month = i
break
if month != -1:
print('You spent', e, 'in', month_list[month])
else:
print('You didn\'t spend', e, 'in any month') month_list = ["January", "February", "March", "April", "May"]
expense_list = [2340, 2500, 2100, 3100, 2980]
e = input("Enter expense amount: ")
e = int(e)
month = -1
for i in range(len(expense_list)):
if e == expense_list[i]:
month = i
break
if month != -1:
print('You spent', e, 'in', month_list[month])
else:
print('You didn\'t spend', e, 'in any month')

2. My solution is:

expense_list = [2340, 2500, 2100, 3100, 2980]

month_list = ['jan', 'feb', 'march', 'april', 'may']

expense_amount = int(input('please enter an amount number: >>> '))


for i in range(len(expense_list)):
if expense_amount == expense_list[i]:
print (expense_list[i], ' was spent in', month_list[i])
break
else:
print('expense amount is not available')

please help me how can I check a good is optimized code.?

[codemedio]

the problem for the beginner is how we know, we going to use len function with this for loop, how to build sense of think in facing the case of an algorithm?

[OrangeTiramisu]

2:09 "...what if your list had like hundred items in it. If you start writing all of these, you'll become granddaddy by the time you're done writing this." 🤣😂🤣😂
Great and informative tutorial, with a hilarious teacher. Thank you.

[tsaltslinger]

The "continue " code ....wow! i=i+1 very important!

[Dnte-RN]

Hello,

Thank you, very much for your involved with teaching us with very simple and understanding way!

According your suggestion, aftera watched your tutorial I switch to exerecises and I tried to doing myself.
I have a problem with your 3-rd exercises and solution. Why in the code there's:
"month = -1" and "month != -1" and whay even I put here value "month = -10" and "month != -10" it sill working correctly?

[tsaltslinger]

John 15:11-14 (KJV)  These things have I spoken unto you, that my joy might remain in you, and that your joy might be full.
This is my commandment, That ye love one another, as I have loved you.
Greater love hath no man than this, that a man lay down his life for his friends.
Ye are my friends, if ye do whatsoever I command you.

[hisky]

thank you for the excellent content and work!

[deekshashadakshari]

if i want to print n numbers so what should I give the range ?