Learn Python Programming - 21 - While Loops

Code Notes -- repl.it/EBns/2
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Let's cover while loops in Python. They are useful when you don't know how long something is going to take to end. Whereas you should use for loops when you know when something should end. Ex: While you are not tired... Keep going. While the user wants to keep playing... Keep playing. For 10 times, do pushups. For 55 times, do jumping jacks. Hopefully, you get a little bit of an idea. ...
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[@raghavanand1648]

Love this man!!!! I just did something myself, and It felt so good count = 100 while count > 0: print (count) count = count - 1 if count == 0: print ("Boooyah!")

[@sithummethmika1676]

Boyaah

[@soldiergaming2722]

I've watched all your python tutorials and haven't seen anyone who explains it better than you

[@nevon_j2am61]

I liked the way u related while loops with push-ups

[@ezra2370]

count = 100 # this also works while count>=0: if count>0: print(count) else: print("blast off") count = count - 1

[@talesofeer]

count = 0 while count > 0: print(count) count = count - 1 if count == 0: print("BLAST OFF!!!!!") I think this is easier. I really love your lectures.

[@francescowang]

Thanks for the explanation. What's the difference between the following two answers? The output is 0 to 9. The other one is 1 to 10. Why is that? count = 0 while count < 10: print(count) count = count + 1 vs. count = 0 while count < 10: count = count + 1 print(count)

[@suryanshporwal932]

you can also write like this m = int(input("Enter a number ")) while 0 < m: print(m) m -= 1 print("yes i know while loop")

[@ellies_silly_zoo]

can't you just do that? count = 100 while count > 0: print(count) count -= 1 print("Blast off!")

[@ajithv8582]

Wand_Platte then you will get 100 blast 99 blast 98 blast........ so you r wrong

[@syedazeemjaved]

No, I think that the print("Blast off!") is outside the body of the while loop. So it will run when once after the while loop is executed.

[@tannerbarcelos6880]

Azeem Javed yes sir

[@harambe2185]

In this situation yes you can

[@valeraezekielvancleoi.97]

ahh, that's exactly what I did except there were some more lines (lol)

[@sgtkeebler]

I am new to coding but a really good hint for new users like me. spacing after : counts. I ran a while loop that had a infinite loop because I didn't space things properly.

[@jtak69]

I just don't understand how someone could possibly enjoy doing this...... I'm only doing this for a class that I have to take, and I hate my life hahahaha. But hey, to each their own. Anyways, thanks for the help man!! You post awesome content!

[@cgd1602]

count = 100 while count > 0: print(count) count = count - 1 print(count) if (count == 0): print("Blast off!") WOW I learned a lot from this simplke code! I forgot turn this sign around: from ""

[@MrM0NKEYZER0]

count = 100 while count > 0: print(count) count = count - 1 if count == 0: print('blast off') could this work fine?

[@harambe2185]

Yh

[@aamirshaikh4392]

Thanks man! Was stuck on this topic for quite some time. Really helped!!

[@nitinchaudhary7686]

Me too , im stuck now..

[@reset8209]

Yea I was stuck too

[@satheeshkumar2543]

count = 100 while count > 0: print(count) count = count - 1 if count

[@Dezzy7model]

I ran the code : count = 100 while count >= 0: if count == 0: print('Blast off!') else: print(count) count = count - 1 But i get... SyntaxError: multiple statements found while compiling a single statement

[@Hampetorp]

count = 100 while count>0: print(count) count = count -1 print('BLASTOFF!!')

[@ezra2370]

wow it worked so python finish code under the while loop before doing anything else out side the while loop and after the condition is false. it will print out ("blast off ") tnx bro

[@horatione]

0:43 best example, dude

[@Shams_Defi]

simple count=100 while count>0: print(count) count=count-1 else: print('blast of')

[@tauhidurrahman312]

count = 100 while 0 < count

[@valeraezekielvancleoi.97]

#at 9:13 #the code block I came up with is: count = 101 while count > 1: count += -1 print(count) print("BLAST OFF") #edit #while my code was shorter, I was able to get more insight on the code that you have written #it seems like a more plausible option to check if my code would run

[@sueholder703]

A brilliantly broken down explanation which helped me solve a coding challenge I was stuck on.

[@hhinfosystemspvt.ltd.2705]

while count>1: print(count) count=count-1 while count==1: print('BLAST OFF') break

[@palestinian5543]

my_energy = 100 while my_energy > 90: print "Do Pushups" my_energy -= 1

[@firozwaseem938]

Palestinian when count =count-1 Count=100 100-1=99 When it runs From 99-1 Why 100 also running

[@lishengyang9779]

count = 0 count = 100 while count > 0: print(count) count = count - 1 if count == 0: print('blast off')

[@luka2987]

i dont know if u read the comments anymore but if someone reads this can you tell me is this wrong count = 100 >>> while count > 0: print(count) count = count - 1 if count

[@omerturan6784]

There is actually another way to make it say "blast off" here is my code: count = 100 while count > 0: count = count - 1 if count == 0: print("Blast OFF!!!") else: print(count) I just put the if_loop after the subtraction so count turns to 0 and boom. The if-loop sees that the variable count equals to 0 and prints the String Hopefully it is correct. I would be happy if you comment on this.

[@nikhilsingh1296]

This is really awesome way to explain, but what if I want to have a series like 1,2,3,6,4,5,6,15,7,8...till 100

[@ahmed1ghanim]

this works tho :D count = 100 while count > 0: print(count) count = count - 1 print('blastoff')

[@scott9695]

count = 100 while count > 0: print(count) count -= 1 if count == False: print("Blast off!")

[@muradelmissalati8150]

this is how I did mine and it worked number = 100 while number != 0: print(number) number -= 1 if number == 0: print("blast off")

[@ENcyb]

Got it right on first time ,but only after this video! Well done boy!Keep up good work please!

[@sumitrana1652]

i did the same code as you did for showing blast off in the last but when i run it blast off keeps on printing , so i figured it myself : >>>count=100 >>> while count>=0: if count ==0: print('yeah!') break else: print(count) count= count-1

[@Gigahertzzz]

You did a great job on explaining the reasoning behind the process. Thanks a ton!

[@Moises-Devzz]

count = 99 while 0 < count < 100: print(count) count -= 1 print('Blast off')

[@RockDavid]

for i in range(3,0,-1): print(i) if i == 1: print('lift off') SImplicity at its finest ^

[@pravinkannaa]

HERE IS MINE: count = 100 while (count > -1): if count == 0: print("Blastoff") break print(count) count = count-1

[@factsandmyths3301]

count = 100 while count > 0: print(count) count = count - 1 if (count == 0): print("blast!") else: print(count)

[@sdr262]

count = 100 while count > 0: count = count - 1 if count == 0: print("Blast off!") else: print(count)

[@stephenmandelbaum2027]

I received the same results but in a slightly different way: count = 100 while count > 0: print(count) if count

[@Allan62111q]

count = 100 while count >= 0: if count ==0: print('Blast Off') else: print(count) count = count - 1

[@dianeconrardy3924]

Thank you for this video. I now understand more about While Loops then ever before!

[@souley3292]

Another way to write the same code: count = 100 while (count>0) : print(count) count -= 1 if count==0: print("Blast off")

[@najninbegum3934]

You’re the best!!! I was going crazy looking for my hw solution. Your video help me out!!!!!!!!

[@nitinchaudhary7686]

What is while true? And whats the difference between while loop and while true ?

[@henrijz8336]

i did this :count=100 while count>0: print (count) count=count-1 if count

[@ezra2370]

count = 100 while count>0: print(count) count = count-1 if count == 0: print("blast off!!")

[@kingzed2855]

why is using "break" a bad thing can you explain? thanks!

[@bibo0909]

this is mine(changed to 10 because it will take forever if it was 100): import time count = 10 while count > 0: print(count) count = count - 1 time.sleep(1) if count == 0: print("BLASTOFF!")

[@jenickjohnson4361]

print("list of no. of rooms") count=1 while count

[@rdsilvalopes]

A little late, but always on time. print("list of no. of rooms") count=0 while count

[@johnsknows3135]

Thanks for the vid. how come = doesn't work (I get why == works)?

[@akyberdiew8797]

Thanks so much. I'm very very grateful. Perfect explanation.

[@hirokiyamamoto4799]

count = 0 while count < 100 : print (100 - count) count = count + 1 print ('Blast off') I started for Zero. Is this okay too? I love your videos!!

[@nitinchaudhary7686]

From where i get the examples , i understand while loop is used for when we dont know, how can we know , we have to use while loop here , im stuck here past 4 days.

[@arjunmehta2853]

Smaller and easier code : # Do 100 pushups count_pushups = 100 while (count_pushups > 0 ): print(count_pushups) count_pushups -= 1 if(count_pushups == 0): print ('0 : Blast off!')

[@JackJack-wg8tb]

count = 0 while count < 100: print(count) count = count+1 print("Blast off")

[@holytraininggrounds4685]

Ive come up with another shorter solution to the problem: >>> count = 100 >>> while count >= 0: print(count) count = count - 1 if count == -1: print('Blast Off!') Logic: the 'while' function runs until the value is equal or greater than 0. the function stops running at -1 because -1

[@alymok2]

this will print 0 and then "blast off" while he wanted to print the words instead of the number 0

[@secretaryofstate1]

Dude is brilliant

[@hiteshvishal5436]

You could have used this count = 100 while count > 0: print (count) count = count - 1 print("blast off")

[@iswarkumar5430]

You started with a good example... :)

[@roeyleon22]

perfect explanation!

[@Dezzy7model]

Why am i getting syntax error when i run in shell not repl.it while count > 0: if count == 0: print(count) count = count - 1 ???

[@gassxy7841]

hi man tks for the video just i have a qst count = 100 while count >= 0 : if count == 0 : print("Blast off") else: print("count ", count) count -= 1 i did this to try what happen the program runs without stopping blast off can u explain why tks

[@carlschmidt6262]

its really funny to see the motivation of many people by the views of the videos the first python tutorials had about 20000 views this for example just 850

[@CleverProgrammer]

+Carl Schmidt certainly! It gets harder haha

[@carlschmidt6262]

Yeah but its way easier to understand then other tutorials Great job btw!

[@intyinty1478]

you can check out other tutorials,same thing. Few people can keep learning,otherwise the world will be full of programmers.haha

[@fahimaljahangir3059]

its because they give up and go study gender studies course.

[@dakk3]

count = 100 while count > -1: print(count) count = count - 1 else: print("Blast off!")

[@dakk3]

What about this?

[@andrejpetrushevski]

count = 100 while count > 0: print(count) count = count - 1 if count == 0 : print("Blast off!")

[@sergmarine1992]

This video helped a lot. Thanks for sharing!

[@christopherimpey6208]

imanaged to get the same result using the following code, count = 100 while count > 0: print(count) count = count - 1 if count == 0: print('BLAST OFF!')

[@TrupinelisTv-LT]

Here's mine! count = 100 while count > 0: print(count) count = count - 1 print ("BLAST OFF!!!")

[@eminescinescu]

count = 100 while count > 0: print(count) count = count - 1 print('blastoff') :))))

[@jimaguelo7113]

this is mine count = 100 while count > 0: count = count - 1 print(count) if count == 0: print("blast off")

[@ajithv8582]

same as mine....

[@clementinerosette1038]

i ran the code.. why did it start at 99

[@avp300]

why it runs 0 as well, 0 is not greater than 0?

[@avp300]

Thanks man! I think I got it. So is this mean we don't need else: statement as he explains in video?

[@avp300]

Sorry, just one more thing, according to your first reply I understood how it got the zero, but we gave it a command line that whenever count == 0, it should not print zero and instead 'Blast Off' ..Why it still printing zero then?

[@TeslaTrading]

count = 100 while count > 1: count = count - 1 print(count) print("Blast Off!")

[@tadhgryan2012]

Got it in 5 minuts count = 10 while count> 0: print(count) count = count - 1 if count == 0: print('Blast Off!!!')

[@user-kp5du4cs9q]

count = 3 while count > 0: print(count) count = count - 1 if count == 0: print('BLAST OFF!')

[@eissaibrahim31]

we always use for loop with range?

[@blzfrost]

Keep it simple count = 100 while count > 0: print (count) count = count - 1 if count == 0: print ("BLAST OFF")

[@hhinfosystemspvt.ltd.2705]

count=100 >>> while count>0: print(count) count=count-1 if count==0: print('BLAST OFF!')

[@GrbesicM]

count = 100 while count > 0: print(count) count = count - 1

[@combatxhoop7069]

this is how i did it while count > 0: print(count) count -= 1 if count == 0: print('BLAST OFF')

[@frankzannimendez1851]

Easier code, be sure to put print('Blast off') outside the body count = 100 while count > 0: print(count) count = count - 1 print('Blast off')

[@anshikagoyal9834]

My output is getting to infinity i mean that after 1its printing blast off again and again its not getting stopped.

[@georgegreen9145]

I have another way of getting the same result count = 100 while count

[@anshikagoyal9834]

I have wrote the same code as yours!!

[@thierrynavarre4161]

x = 100 while x > 1: x = x - 1 print(x) if x

[@irfanhashim18]

Dear, you have course for Pyqt , communication with sqlite?

[@azminislam6149]

mine isn't working!what should i do?

[@MrWardo2009]

Thank you for doing this video! It really helped!

[@philipirving5860]

Study Material WOOH!!!

[@sheisks]

i=100 while i>0: print(i) i-=1 print("blastoff!")

[@jassstar8761]

im in 11th clas and i dont know much about python but seeing u i felt that python is very easy thank u very much

[@devabd404]

Can you please try to run the python files using command prompt?

[@nitinchaudhary7686]

How can we notice while examples in real world ?

[@anusmitasamanta2608]

Hey, cool!!

[@fatmaalharthi7699]

HELP GUYSS :( WHO CAN SOLVE THIS ---> Write a program to play the following game. There is a list of several country names and the program randomly picks one. The player then must guess letters in the word one at a time. Before each guess the country name is displayed with correctly guessed letters filled in and the rest of the letters represented with dashes. For instance, if the country is Canada and the player has correctly guessed a, d, and n, the program would display _ana_da. The program should continue until the player either guesses all of the letters of the word or gets five letters wrong.

[@Abhishek-ts4yu]

thanks a lot man

[@eduese]

Please how do I get the link to the tutorials as you say in the video

[@Adrian-le9ij]

thank you

[@simonehaynes-noel6462]

i did it like this an it worked count = 100 while count > 0: print(count) count = count - 1 print('blass off')

[@tedicuko1538]

I dont know why bu everytime i use else it gives me a syntax error !!! please help

[@fairoosok5810]

count=100 while(count>0): print(count) count=count-1 print('Blast off!')

[@zerocopy8407]

Well im starting to see the part where just one mistake can mess the whole thing. The first time I tried doing it I was doing less than 0 instead of greater than. Then I had restarted python and forgot to set count to 100. Then every time I put the code in and got it wrong(from a missed quote or colon) it set the count to 99 and didnt realize it. This should be interesting.

[@austingrant3264]

I made mine only with the '>' and it worked? count = 100 while count > 0: print(count) count = count - 1 if count == 0: print("Blast Off!!")

[@avp300]

I also did exactly same way and it does get the result we want, but I think (I am also new learner!) it wrong way to do it. Its like saying python first print from 100 to 1 and then print 'blast off' regardless. If you will reorder the lines (like write this 'count = count -1' last but same indent as if > it will not print blast off) ..so what I understood is that we have to give if statement before we tell it to count from 100 to 1....I think!

[@otkacademy5401]

that was very helpfull