Standard Input, Output and Error Streams, Relative and Absolute paths | FIle handling CLass 12

[@atulsinghnegi6980]

What is the need of the concept of stdin , stdout or stderr ??

[@rohitkumar8636]

Nothing, just time pass

[@a.sharavanakumar8777]

I had doubt in this topic.. But know my concepts are cleared. Thank you so much mam.. We support you 💜💜🏆

[@SwatiChawlaofficial]

Glad it was helpful... Thanku so much.. Keep watching

[@VikasKumar-kf6kr]

I am also a CS teacher..but new learner of python..fan ho gaya mam main apki teaching ka..

[@SwatiChawlaofficial]

Thanku so much 🙏🏻😊

[@ankithashet9168]

ma'am you have no idea you are helping us i will surely recommend you to my friends

[@SwatiChawlaofficial]

thanku so much...for ur support.... keep watching

[@ankithashet9168]

@@SwatiChawlaofficial 😊

[@aishanasim1900]

🔥🔥🔥🔥🔥a lot of blessings n thanks mam❤️❤️❤️

[@SwatiChawlaofficial]

Welcome

[@sachinkhote451]

I found this fantastic teacher in march 😭😭😭

[@SwatiChawlaofficial]

No worries... still u r having time... Do share this channel with others too.. Keep watching..

[@AjeetKumar-hv5up]

Mam.keep.going u r doing great Content is *1st class*

[@SwatiChawlaofficial]

Thanku so much...🙏🏻😊 Keep watching 👍🏻

[@ankita6251]

Explained very nicely maam Its crystal clear now😊

[@SwatiChawlaofficial]

Glad to hear that

[@aadijain2609]

😊 awesome expln 😊

[@SwatiChawlaofficial]

Thanku

[@godgamer2258]

mam aapne koi telegram doubt group bhi banaya hai?. kyunki mam agar telegram group hoga to usme doubt puchne me asani rahegi. vaise mam, due to your fabulous explaination, zyada doubts mujhe ate nahi. nut still it would be really helpful if you make one for 12th class students

[@atgaming7578]

I have doubt through your teaching skill is very goog mam

[@sachinkhote451]

Mam u r too good teacher 🙏🙏🙏

[@SwatiChawlaofficial]

Thanks a lot

[@sidharthsunu7595]

Mam your explanation is very nice . Just I want know when we are using these streams. Actually we can handle the same situation using input() and print() . Then why we need these stdin and stdout.

[@yashbhatt3973]

Because they are high level function and they themselves are made from these streams for ease of users

[@ramjeegupta4735]

You are great mam

[@SwatiChawlaofficial]

Thanku

[@clashroyalehiste]

thank you so much mam, you know after 3 days we r having term1 boards

[@SwatiChawlaofficial]

Best wishes for ur board exams

[@StudyGuru1504]

such a gajab teacher tnk u mam very much from agra

[@SwatiChawlaofficial]

Thanks and welcome

[@akshayraj1967]

Mam ur lectured r top tier, ur pdf is amazing. Will there be any chance of the public getting access to ur pdfs?

[@SwatiChawlaofficial]

Sure..You can enjoy special perks by joining the membership. Have a look at this. kzbin.info/door/2vH9rqGh-fJELF8acGfBdwjoin

[@yashaswipurohit2424]

You are amazing.....Thank Youuu

[@aartisharma2296]

I have a question we are checking if char=='' but wht if it gets spaces? then how it will understand that this is end of line or space

[@julietharris08]

Please if you explain in english it would be so helpful those who watches in other languages... I dont know hindi... Kindly always explain in english.. You are doing great....I just dont want to miss your videos

[@SwatiChawlaofficial]

Actually getting requests for both English as well as Hindi... That's why using bilingual

[@godgamer2258]

mam 3:47 par 1st line me implemented as files ke bad 'can be' likha hai na? pls batadijiye mam kyunki mai video ke sath sath notes banata hu na

[@SwatiChawlaofficial]

These standard devices are implemented as files called standard streams.

[@inu0602]

Ma'am, whenever I wrote [ end=' ' ] it shows error .......WHY? can you plz tell me🙏

[@thiru20-fj2tq]

Mam I have a doubt in the code for file handling 12:59 I have a doubt in output I also tried the pgm in my PC mam you wrote story. txt as already you have that document I also did the same but got error as filenotfounderror

[@SwatiChawlaofficial]

Either give the complete path of a file... Or Place both the files at same location

[@rosevlogzz]

Teacher can u tell what is the use of sys.stdin.readline() in the above program 🙏

[@snehagupta8013]

Excuse me ma'am I have a doubt is this in the syllabus of 2023?

[@bhoomikabajpei4234]

Ma'am when will u teach us on smart board

[@Prachita516]

Ma'am i still have doubt in relative path, can u please make another video for this topic? just 5-10mins long ? it would be a great help ma'am 😅😅😅

[@freefirebattleground1675]

Mam pls confirm whether this topic is deleted or not

[@non5378]

Mam could you give me some ideas about what types of software had students make for class 12th practical???

[@SwatiChawlaofficial]

there are many softwares available.. u can use according to your convenience and requirement..

[@non5378]

@@SwatiChawlaofficial mam did u also made software on 12th?

[@allansabu6093]

Ye sys func to h hi nhi....file handling m...ye beech m kahan se aa gaya?

[@SwatiChawlaofficial]

sys module is their..in ur curriculum... Standard input streams, output streams and error streams..in text file... For more detail..plz refer CBSE Curriculum

[@indiranamasivayam9174]

If IMP file is CWD, then what is the relative path for 1.mp4 mam

[@Factforall.26]

mam parent directory kya hota hai where to use two dot (..)

[@SwatiChawlaofficial]

Parent directory means... Either root directory or u can say top most level... Like your c, d drives

[@Factforall.26]

thank you so much mam @@SwatiChawlaofficial

[@LofiEditz]

Good morning ma'am ma'am i have doubt that i my computer science with python class12 it is written that opening file pointer position in w+ mode is at the beginning at the file. page no. 205.

[@SwatiChawlaofficial]

When you open the file in w+ mode, it will be empty...cursor in the beginning or end..means same . . After writing the data, we can read also...

[@LofiEditz]

@@SwatiChawlaofficial Thankyou ma'am

[@chococandy8009]

Thank you ma'am.

[@SwatiChawlaofficial]

Welcome 😊🙏🏻

[@ronysedits2866]

Mam 10:14 Why we are writing print Instead Can we use sys.stdout.write(ch, end=' ')

[@SwatiChawlaofficial]

We can not use end argument in sys.stdout.write() as it is in the print()

[@ronysedits2866]

Thank you mam

[@Itsmeakriti13]

Hii can you also provide us with your notes please....

[@SwatiChawlaofficial]

*Hey, now you can avail all these notes at the discounted rate….* *Class - X Information Technology* * Employability Skills (Notes) - X rzp.io/l/1mcA8UL * Employability Skills (Ques Ans) - X rzp.io/l/2hxw8tY6N * NCERT Solutions of CBSE Class 10 IT 402 rzp.io/l/fKUADxvbv * Unit - 1 Digital Documentation Advanced using LibreOffice rzp.io/l/GUhTNcTpH * Unit - 2 Electronic Spreadsheet Advanced (using LibreOffice) rzp.io/l/PpBEONKRN * Unit - 3 DBMS (based on LibreOffice Base) rzp.io/l/XJrYs2P * Unit - 4 Managing Health and Safety rzp.io/l/TQWvwOa *Class 11 Computer Science (083)* * Python rzp.io/l/cKflR95C *Class 12 Computer Science (083)* * Computational Thinking & Programming - 2 rzp.io/l/wihJhPBO * Computer Networks rzp.io/l/OKWrgua * Database Management rzp.io/l/z0mu2uBVu * Assertion and Reasoning rzp.io/l/TgngGDjb *IMPORTANT : After successful payment, don't refresh or go back (Redirecting...... will be shown on screen) , just wait for a while, and then Click on Request Access button, then you will get access to notes on your G-Mail ID within 24 hours.*

[@prashansasinghrathore2725]

Mam plz make one more video on relative path .. i didn't understood ... Please mam

[@ranita5599]

Ma'am Iss bar kya syllabus pai hai iye topic🙏

[@shreyasinha-iitbhu8080]

Mam ye hamare XII k syllabus mein hai?????.. school me to nhi pdhaya gya hamein

[@SwatiChawlaofficial]

Yes...it's there in your curriculum...

[@shreyasinha-iitbhu8080]

Ok mam!!!...😊

[@cnsraghavan1592]

Ma’am,what is the difference between strip( ) and split( ) ? Kindly respond 🙏

[@SwatiChawlaofficial]

strip() will remove blank spaces from left and right split() it splits the string according to the argument given (by default with blank space) and returns the result in the form of a list..

[@SwatiChawlaofficial]

For detailed explanation, plz check out the videos of String Functions String Manipulation: kzbin.info/aero/PL5Raijva2y4S8NmIDmeY2IRMulsvLZg_A

[@cnsraghavan1592]

@@SwatiChawlaofficial Thanks a lot ma’am 😀 Ma’am,is this video included in the playlist for python revision tour?

[@ritarai9320]

👍🏻👍🏻 Mam the video is great but Mam can You please tell me how to read a file and print its data on my screen using standard streams..😀

[@ritarai9320]

Ok Mam You already told that...my mistake..😅😄

[@SwatiChawlaofficial]

it's okk... My pleasure... keep watching..

[@UndefeatableChampions]

Hi Ma'am, I have a very important doubt in a question of random(). Where can I perhaps forward the question to you so that you can maybe help me.

[@SwatiChawlaofficial]

random module: kzbin.info/aero/PL5Raijva2y4T70gfikFKcqy-WdAA9M50E

[@krish4292]

6:40 mam this program does not work on spyder.. it says invalid literal for int with base 10()

[@SwatiChawlaofficial]

Plz check ur code again.. It will work

[@krish4292]

@@SwatiChawlaofficial mam I tried it on python ..it worked properly ,but spyder gives error invalid literal and doesn’t accept sys.stdin.readline() in int

[@Arpitaasharnaa]

Mam ye topic 2024 class 12 th me nhi hai nah ? please reply mam ....

[@SwatiChawlaofficial]

No

[@allansabu6093]

Mam~is ur playlist in series?

[@SwatiChawlaofficial]

Yes.. it's in series...

[@priyankacs3189]

Mam , when we are reading character one by one when one word finished next will be ' ' right?so when we check ch==' ' how it is checking That

[@yadavpooja7960]

mam readline() to sirf ek line he read krta hai fer yaha pure file kase read kr raha hai

[@SwatiChawlaofficial]

If u use readline() inside a loop, then it will read line by line till the condition is True..

[@aravind4868]

ma'am please explain me about flush() and removing white space after reading from file

[@SwatiChawlaofficial]

The flush() method in Python file handling clears the internal buffer of the file. In Python, files are automatically flushed while closing them. However, a programmer can flush a file before closing it by using the flush() method. Syntax: fileObject.flush()

[@SwatiChawlaofficial]

to remove trailing white spaces..u can use rstrip() .. to remove leading white spaces, we can use lstrip(), to remove both leading and trailing white spaces, use strip()

[@aravind4868]

@@SwatiChawlaofficial thank you mam

[@SwatiChawlaofficial]

Welcome

[@AnushkaSingh-ux6ow]

Ma'am how to count no of vowels and consonants from text file

[@SwatiChawlaofficial]

def alphabet(): f=open("AAA.txt","r") data=f.read() c=v=0 print(data) for i in data: if i.isalpha(): if i.lower() in 'aeiou': v+=1 else: c+=1 print("Consonants:",c) print("Vowels:",v) f.close() alphabet()

[@AnushkaSingh-ux6ow]

Ma'am can you please resend the correct answer again

[@SwatiChawlaofficial]

def alphabet(): f=open("AAA.txt","r") data=f.read() c=v=0 print(data) for i in data: if i.isalpha(): if i.lower() in 'aeiou': v+=1 else: c+=1 print("Consonants:",c) print("Vowels:",v) f.close() alphabet()

[@Aditya-qx7nf]

Ma'am was the c drive root directory ?

[@SwatiChawlaofficial]

yes

[@akhilbansal4849]

Please provides notes also mam Great lectures great content Really appreciate you hard work ❤️

[@SwatiChawlaofficial]

Sure... You can enjoy special perks by joining the membership. Have a look at this. kzbin.info/door/2vH9rqGh-fJELF8acGfBdwjoin

[@Deepak-qu6uq]

Q:-Following is the structure of each record in a data file named "PRODUCT.DAT". ("prod_code": value, "prod_desc": value, "stock": value) The values for prod_code and prod_desc are strings and the value for stock is an integer. Write a function in Python to update the file with a new value of stock. The stock and the product_code, whose stock is to be updated, are to be inputted during the execution of the function.respected Swati mam plz give me the solution of this question

[@SwatiChawlaofficial]

kzbin.info/www/bejne/q5fdlpRjoM90bK8

[@lightning8576]

I just want to know in which way we have thing to solve questions

[@ankitandanshuexperiment.7373]

Mam when i excuted this in my laptop it show' true' is not define what can I do

[@SwatiChawlaofficial]

'T' will be capital for True

[@ankitandanshuexperiment.7373]

Ok mam done

[@sidharthsunu7595]

Mam can you please give few programs using relative path

[@SwatiChawlaofficial]

Plz check the playlist...most of the programs being implemented follows relative path

[@nehagaur2710]

Hi ma'am ,I am writing the same code but I am getting an error"invalid literal for int() with base 10: '' in line of code"a=int(sys.stdin.readline())"..I am not getting why...Plz suggest

[@swapnilsaraswat8637]

its just the version error may be u have older version or the latest version

[@SwatiChawlaofficial]

check the values you are entering ..i think u are trying to enter the string value in place of integer....

[@nehagaur2710]

@@SwatiChawlaofficial Ma'am its a compilation error .The program is not getting executed

[@nehagaur2710]

@@swapnilsaraswat8637 its Spyder(Python 3.7)

[@lightning8576]

Mam, I really don't know how to use logic in python that's why I always score less can u suggest me tips because I have to give board this year Please mam it's a request

[@SwatiChawlaofficial]

Still u r having... 5 and half months... This time is enough to improve ur logics and get command on the topics.. U can start watching my videos...covered all the Chapters with important Questions... Wherever possible, try to implement Practically..to explore.. It will definitely improve ur Concepts

[@lightning8576]

Thank you mam I will definitely try this

[@angadsingh6478]

mam what is raw string?

[@SwatiChawlaofficial]

Python raw string is created by prefixing a string literal with ‘r’ or ‘R’. Python raw string treats backslash (\) as a literal character. This is useful when we want to have a string that contains backslash and don’t want it to be treated as an escape character.

[@non5378]

Mam plz make video on __main__ and __name__

[@SwatiChawlaofficial]

ok

[@SwatiChawlaofficial]

Main function is like the entry point of a program. However, Python interpreter runs the code right from the first line. The execution of the code starts from the starting line and goes line by line. It does not matter where the main function is present or it is present or not. Since there is no main() function in Python, when the command to run a Python program is given to the interpreter, the code that is at level 0 indentation is to be executed. However, before doing that, it will define a few special variables. __name__ is one such special variable. If the source file is executed as the main program, the interpreter sets the __name__ variable to have a value __main__. If this file is being imported from another module, __name__ will be set to the module’s name. __name__ is a built-in variable which evaluates to the name of the current module.

[@AnushkaSingh-ux6ow]

Ma'am in that line if I. islower in aeiou is showing errror

[@SwatiChawlaofficial]

I.lower() in 'aeiou':

[@VardhanMittal]

𝑀𝒶𝓂 𝓉𝒽𝒾𝓈 𝒾𝓈 𝒾𝓃 𝑜𝓊𝓇 𝓈𝓎𝓁𝓁𝒶𝒷𝓊𝓈??

[@VardhanMittal]

𝒮𝓎𝓈 𝓂𝑜𝒹𝓊𝓁𝑒

[@SwatiChawlaofficial]

Yes

[@debarghyakundu908]

mam you have a beautiful and killer smile.