Lecture 7 : File Input/Output in Python

[@gchethan9472]

Hello all This one the best python basic lecture you will ever get, In the entire video she never asked for subscribe or like. Let’s encourage her to do more courses like this and help crores of students and learner’s. Keep up the good work Shraddha and keep on helping people.

[@naniyadavlucky4960]

what do you think after completing this lectures what should we do , is there any other videos to practice them and become pro in this .

[@dimeglioyt6596]

There's nothing wrong to ask from the viewers to subscribe to their channel as it can be someone's main source of income and without being so mean we can listen and do that thing so

[@abdullahbut15]

Mam! this line is very motivational for me that you mentioned in start that "All power is within you you can do anything and everything"

[@Anonymous-Guy-01]

Shradha di please cover all the Topics from 0 to 100 and please start DSA with Python 🙏

[@neonblade209]

better to start DSA with Java or c++, becoz u will get more resources in java and c++ , dont start DSA with python

[@KumarHarsh-qu3fk]

@@neonblade209 AI and machine learning is better un python i guess

[@kapilprajapat-qb6cz]

@@KumarHarsh-qu3fk you're right

[@CraftAndCodee]

@@neonblade209 I want to learn machine learning thats why I chose python so there is any way you can tell where I can learn DSA because leetcode and all other platforms doesnt start from basic It would be great help if you help me with this

[@UnboxedGoodies]

@@CraftAndCodee search for codebasics DSA playlist

[@sukhvindersingh2249]

00:01 Today we will cover Chapter Seven about file operations. 02:07 RAM is volatile memory and not suitable for permanent storage 06:02 Using physical files in day-to-day operations 08:25 Opening a file in read mode returns a text IO wrapper 13:18 Understanding file reading modes 15:23 Reading a file and printing its contents 19:13 Appending data to a file in A mode 21:17 Differences between different modes 25:09 Different file modes in Python: Read Plus, Write Plus, Append Plus 27:19 Using the 'with' syntax in Python automatically closes the file 31:48 We can delete any file by using the remove function in the os module. 34:24 Replace Java with Python in a file using the replace method. 38:59 Write a function to find the line number of the word 'learning' in a file. 41:02 The code checks if a word exists within a given data string and prints the line number if it does. 45:28 Extract individual numbers from a string and convert them to integers 47:20 The code splits a string of numbers separated by commas and prints them individually. Crafted by Merlin AI.

[@bhomitdixit3634]

thanks bhai

[@KanzaIltaf]

The r+ does not always add the data at the beginning. its totally depends where the cursor is like if we use the read command and then write so in this case after reading data the cursor will be in the end and if then we use the write command then the new data will be added to the end of file: For example in this case: f = open("test.txt" , "r+") content = f.read() f.write("john" ) f.close() : now in this case "john" will be added to the end of file. so remember the cursor is not always in the beginning in r+ mode its totally depends what you have done before that line of code. Happy coding😊

[@codewithme1042]

please create a series for AI, ML && Neutral Networks and cover all the topics.

[@ShadowCipher]

Ys ma'am please 🥺

[@ShadowCipher]

Ys ma'am please 🥺

[@premrawtani4307]

yes ma'am please create the playlist for ai ,ml and neural network

[@Factsmotivation-as]

Yes ma'am

[@TheAnimeman8105]

comment on apnacollege for this letest video

[@sandeshgawali8056]

for those who not getting that where to write pip install command please write that command in your terminal 31:49 and all set

[@Yug-s7h]

I am facing the issue in starting, demo.txt file does not print , only print the type demo.txt, could you please tell me how to fix this problem?

[@akhileshghatate4157]

36:42 def replace(old_string, new_string): with open("practice2.txt","r") as f: data=f.read() n_data = data.replace(old_string, new_string) print(n_data) with open("practice2.txt","w") as f: f.write(n_data) replace("Java","Python")

[@MKJmahi7876]

def replace("Java" , "python"): with open ("practice2.txt", "r" ) as f : date= f.read() n_data= data.replace("Java" , "python" ) print(n_data) with open("practice2.txt", "w"): f.write(n_data)

[@omkarthakur8358]

The example of Shaktimaan was the best example 👌.

[@anuragrahangdale23471]

this series is most helpful for me ..thanks to shradhaa mam

[@yhsunny9384]

One thing to mention, that the 'in' operator in Python checks for a substring match, meaning it will return True even if only part of the word "learning" appears in the text. For example, if the text contains "lear" or any character that the word starts with, the code will still print the word is "found". At 41:37.

[@Successthoughts01]

Thanks didi from bottom of my heart for this awasome python series.

[@__pg.editzz]

0:13

[@SomayOjha]

I wanted to point out that while the code used to import data from another file and count all the even numbers (without using the split function) was functioning, there is a serious bug. The issue is that you will never get the ending value because there is no comma to separate it. This can be fixed with a little tweak, but I thought it's good if I let everyone know.

[@SamMentors]

It's really helping for students. The way you are providing knowledge in an easy and simple way.

[@krishnanandtiwari732]

Mujhe kafi mn tha, python sikhne ka , ye bahut hi unique vedio hai Mam

[@azhar-073]

very intellgently teaching python. I really admire her, as I have seen one of other tutorial but that was insufficient and incomplete. Nice

[@manavsojitra8508]

36:59 with open("kt.txt","r") as k: data = k.read() if "learning" in data: print("found") else: print("not found")

[@bhriguraj1151]

28:21 shaktimaan & gangadhar

[@Lavanya-b2m]

10:24 mam string is not printing only the type is printing

[@RahulSingh-ml9hg]

same problem with me

[@BowlNest]

same problem with me

[@valltakegaming6854]

bhai log minimize kar ke karne ke bad ho raha hai with every change in demo.txt i ahve to Minimize VSC

[@valltakegaming6854]

@@BowlNest bhai log minimize kar ke karne ke bad ho raha hai with every change in demo.txt i ahve to Minimize VSC

[@valltakegaming6854]

@@RahulSingh-ml9hg bhai log minimize kar ke karne ke bad ho raha hai with every change in demo.txt i ahve to Minimize VSC

[@architrajthonghar7982]

Understood everything but at 48:20 the last number in the data isn't printed as there was no "," after the no. 101

[@bikashpandey4051]

Thanks a lot maam for teaching us simply and clearly, in an understandable way. Hare krishna !

[@divyanshisaluja3133]

Ma'am, The vs code is showing empty lines in output even when using the read() function for the first time. what's the reason for this?

[@educentre6822]

bro save your previous txt file, then it will show output.

[@RajzMANISH]

I'm waiting = 8th video 🧑‍💻🧑‍💻

[@BizAutomate]

I'm waiting = 8th video🧑‍💻🧑‍💻 ^ SyntaxError: unterminated string literal (detected at line 1)

[@mohiteshanshu2555]

​@@BizAutomate😂

[@Belovedme-1]

😂​@@BizAutomate

[@paramjjethwa8734]

thank you amazing lecture yet again, last part practice question was amazing cleared all my doubt but need to practice more

[@Rajput1678]

Ma'am please cover projects in this python series as you did in JS series please ❤❤❤

[@rangasainath]

Ha ...

[@kuldeepsikarwar6613]

Ek projects ke sath me use kishe karna hai ye bhi Sikh lenge

[@kuldeepsikarwar6613]

To ek projects to karna padega

[@ccydzggzh]

some pls help me when i write replace at 36:20 it is showing new_data = data.replace("Java", "Python") ^^^^^^^^^^^^ AttributeError: 'builtin_function_or_method' object has no attribute 'replace' pls help me

[@anime-beat]

code for the problem to find learning in line with line index of a file 'with open('practice.txt', 'r') as file: n = 0 for line in file: n += 1 if 'learning' in line.strip(): print('learning found in line', n) else: continue'

[@AJosl360]

key topics with timestamp :------> 00:01 Today we will cover Chapter Seven about file operations. 02:07 RAM is volatile memory and not suitable for permanent storage 06:02 Using physical files in day-to-day operations 08:25 Opening a file in read mode returns a text IO wrapper 13:18 Understanding file reading modes 15:23 Reading a file and printing its contents 19:13 Appending data to a file in A mode 21:17 Differences between different modes 25:09 Different file modes in Python: Read Plus, Write Plus, Append Plus 27:19 Using the 'with' syntax in Python automatically closes the file 31:48 We can delete any file by using the remove function in the os module. 34:24 Replace Java with Python in a file using the replace method. 38:59 Write a function to find the line number of the word 'learning' in a file. 41:02 The code checks if a word exists within a given data string and prints the line number if it does. 45:28 Extract individual numbers from a string and convert them to integers 47:20 The code splits a string of numbers separated by commas and prints them individually. thankyou

[@md.shuheburrahman4002]

I LIKE your confidence mam/didi. You are doing too good.

[@the.ShubhamRaj]

10:24 me jab ye code likh k run krr rha hu tbb bss class 'str' likh k aa rha h baaki demo.txt pe jo maine likha h vo aa hi nhi rha .... can anyone help me out??/

[@bhaithakur9120]

Type likh kar chala Bhai Thakur_sahab 03_9 per photo send kar

[@Yug-s7h]

I am facing the same issue, if your problem has been solved. please tell me

[@AkankshaRai-p6y]

Hi mam kitna aachha pdhati hai aap thank you so much

[@HamzaAli-vs9tb]

There is one thing Maan Shradha forgets to mention is that if anyone passes the path of a text file to the first parameter of the open function, so if you just copy and paste the path as it is in the double quotes, Python will give an error because in the path there are back slashes (\), and python treated back slashes as an escape sequence character. So to fix this, there are many options, but I find these two easy; either u can put r before the first double quote and so python will treat the path as a raw string or u can replace all single back slashes with double back slashes(\\) and so python will treat this as a normal back slash rather then treating it as a escape sequence character.

[@irfatali4477]

I am from Pakistan and i am learning frontend development by watching your tutorial. you are doing absolutely great work. html css js ho gae ab react.js ka course kab aey ga

[@rewatiraman2956]

congrats

[@Atch.19]

Ak sawal ha ap sa d chowk per goli kyooo cahlai

[@S.creator9913]

Construct a program which accepts a sequence of words separated by whitespace as file input. Print the words composed of digits only.

[@S.creator9913]

@shradhaKD mam please

[@CodeSeriesWithRudra]

I am the 1st viewer of this video

[@GAMIDATA]

Ma'am if I run the "write command in VScode " it is not working. What should I do? Pls help... when I run the write command the text in the txt file is not overwriting as you said.... the text remains the same. Pls help..... 🙏🏽🙏🏽

[@namratamankar9138]

mam , while replacing the word java to python , and after that the file should be overwritten, but when i was writing the code the file is not being overwritten but the new file is being created , which should not happen right?how should i come over this error.

[@harshiljana3701]

I didn't understand 38:00 where she writes "!= -1". Can someone explain.

[@mahesha1770]

same, whats that -1

[@ApurvaChandanshive]

Thank you so much didi. ❤

[@tecproudtuber2399]

This series is one of the best series for learning python, easy learning with didi but apne Gangadhar ko Vidyadhar bna Diya lol :)

[@ABHISHEKSAINI-x7c]

😄

[@akhileshghatate4157]

37:07 WAF to find all the occurrences of any given word. def check_for_word(word): line_no=1 occurrence=[] with open("practice.txt","r") as f: for line in f: if word in line: occurrence.append(line_no) line_no+=1 if occurrence: print(f"the word {word} was found at lines:, {occurrence}") else: print(f"the word {word} was not found in the file") check_for_word("Python")

[@CodersTrios3956]

awesome lecture didi 🙌

[@NishantKumar_N]

32:57 Practice Question 1 ---------> with open("practice.txt", "w") as f: f.writelines("Hi everyone, We are learning File I/O using Java. I like programming in Java.")

[@akhileshghatate4157]

48:38 why didn't 101 print in the terminal and how to get it??

[@neededucation]

Mam mere pass to yeh ha he nhe mtlb jab main aap wala code chala raha hun thonny pe to woh error generate kar raha ha yeh kiyu mane demo.txt he likha tha

[@miss_joker]

same

[@DhritiYadav-iy4cv]

We love your classes, Please make video lecture on pygame development 😢 Its our request Vote for lectures on pygame 👇

[@nitintripathi1779]

MAM 28:21 *Gangadhar

[@TUFFANGAMING15]

Hey can anyone tell me why my data is not able to print in new file..Plzzzz

[@prabhatchhatui3992]

দিদি C++ এর একটা সিরিজ বানান। আপনার সমস্ত ভিডিও গুলি খুবই সাহায্যকারী হয়। 😊😊😊

[@NitinSharma-np6tm]

Shaktiman is gangadhar not vidhyadhar ma'am😂 @28:20

[@ADITYAJHA-k8l]

madam in practicle question 1 instead of using can we use multiline string quotes(tripple quotes ) as it is provinding the same output

[@bhavyajeetsinghdevda9651]

even though i created demo file in same folder still i am getting error 'demo.txt' file is not created i am using vs code can anyone help please and if i am giving full path then the error comes is SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 2-3: truncated \UXXXXXXXX escape please help if any one know the reason

[@learnwithnagma]

Thank you so much didi for your efforts 👍. Literally enjoy studying coding via you & inspired by ur efforts 😊.

[@dailyuploads3959]

write a program to convert the sequence of number into type of integer ----------- with open('read_num.txt', 'r') as f: read_file = f.readline() split_stream = read_file.split(",") int_converted_val = [] for num in split_stream: number = int(num) int_converted_val.append(number) print(int_converted_val)

[@kritikapandit3279]

For me this class is not running on VS code, but working on Jupyter. why is it so.

[@TheAmanLifts]

Thankyou ma'am for the lecture ! We will be really grateful if you teach us DSA USING PYTHON ! 🙏

[@AnoopKumar-qj9tt]

If we go with the traditional method, what if the last no after comma is even no. In that case last no will not come in num bcoz there is no comma after that & we can't check even for it Ps: last ques of the video

[@NishantKumar_N]

38:07 Practice Question 3 me != -1 ye samajh me nahi aaya, please koi explain karo 🙏🏾🙏🏾🙏🏾

[@61mahesh16]

Mujhey bhi bhai

[@61mahesh16]

Mujhey question no4 bhi nahi samjh aa raha hai if you please explain

[@trishakarmakar4605]

it will be great for students if you start DSA with Python...

[@jalaramstudio]

Please made playlist of advance java concepts

[@SKSAIFIBNAEZHARARKO]

Practice question- 32:55

[@CodeClips-CC]

what to do if i have to read only second line of the file and not first one?

[@asimaqadri7226]

M i the only 1 whoes first code is not working. I made a file naming demo.txt Then write f=open ("demo.txt") data=f.read () Print(data) Print(type(data)) But in terminal it prints only type which is str but no data

[@Yug-s7h]

I am facing same issues, Have you solved this problem, please tell me how to fix it?

[@md.sabbirmahmud7388]

I am also facing same type issue. Have you findout any solution?​@@Yug-s7h

[@gtachannelloveronly]

Loving your content mam, I've been learning from you for so long and you make it very easy to grab a good hold on the concept, please if possible, extend this series by adding data analysis videos using numpy pandas, I'm a data enthusiast and building a career in data field. It'll be really helpful if you can add these concepts as well, and as you said you also wish to give a tutorial on machine learning, I will definitely wait for your ML videos.

[@educentre6822]

my statement automatically showed up on next line, without mentioning " ", reason?? (19:55)

[@devanshsingh7097]

10:26 f = open("demo.txt","r") ^^^^^^^^^^^^^^^^^^^^ FileNotFoundError: [Errno 2] No such file or directory: 'demo.txt' plz help me

[@SwarnavoNathD4]

when am running the program in VS code the sentence is not getting printed IDK why?? But the code is correct there is no error. Any solution???? nither any file is getting created with OPEN SYNTAX!!!!!!!!!!!!!!

[@bipinkuruvilla9915]

same bro file is not getting created i also dk why?

[@Ashwathama814]

Txt wali file pe ctrl+s karke save karo phir ho jayega aap bina save kare hi kar rahe hoge

[@SwarnavoNathD4]

@@Ashwathama814 ok will try THNX

[@AnimewithAman]

Thank you so much for the awesome videos your knowledge definitely help to clear the problems 😊😊

[@ramyarathimaheshwari9149]

Read ho rhya he jese hi write vale part me jati hu to errno 9 bad file descriptor show ho rha he... Esa kyu ho rha he???

[@S.K.0001]

What dep. of the sector should anyone go if they had two year gap after btech with no experience,plz give some suggestions for it as u know not everyone gets jobs in college.and should they prepare for cloud,or full stack or data analytics what to do Plz guide...or where will be the vaccancy for them as most of the company don't consider them at all...

[@GAMIDATA]

Ma'am if I run the "append command in VScode " it is not working. What should I do? pls help..... when I run the append command the text in the txt file is not adding in the end as you said.... the text remains the same. But it is running in jupyter notebook

[@ArpitSarang-sw1et]

use write

[@harneetgrewal9475]

Where is article link provided? Can u pl share

[@srusthidevaray]

mam i dont understand in i/o module why you take find word !=-1

[@musicscanner6465]

kya shaktiman hi vidhyadhar hai? or vidhyadhar hi shaktiman hai to gangadhar kaun hai?(28:20)

[@Asadneon]

focus on programing

[@omshubhgupta277]

why you don 't made video on exceptional handling, NumPy and the other topic

[@mkapadia99]

Nice video!

[@Shehzadhacker]

What is file text bold,underlines

[@dailyuploads3959]

WAP to find the word which we find the I/O streamed file ------------------- def fun(): with open('read_file.txt',"r") as f: word = 'dogs' data = True line = 1 while data: data = f.readline() if(word in data): print(line) return line += 1 fun()

[@naveenchandra1298]

But Mam in my laptop the file is open automatically but the new file is not open as in your computer show please help to avoid this.

[@maniverma8867]

First 🥇 like and comment and viewer

[@ProductHS]

I do add path but in CMD not recognized python version tell me some trick to start journey to python course

[@kisanmanila9317]

Hi Shradha, Can you take some more session this OS related command , As I have to do some monitoring automation in my servers. But not getting proper source of this? Al least can you please provide the source of above OS command ?

[@innayatsingh9483]

Ma'am meri file open nhi ho rhi h. Code bhi sahi h. 10 baar check kiya h. Kya problem ho skta h

[@gauravsharma76975]

Brother dhyaan se dkhna file ki directory kaha h and file ki check krna kaha h fir shi hojayega. for example maine jo txt banaya vo python>lecture>txt wale folder me banaya but python use python foldeer me search kr rha h so dhyaan se dkhna

[@Ashwathama814]

Txt wali file pe ctrl+s karke usse save karo phir ho jayega

[@ramyarathimaheshwari9149]

Facing same issue

[@dhanapatilongjam1749]

Sis make more video such as numpy full course, ai, ml, deep learning❤❤

[@anuragmaurya2796]

Didi Exception handling in python !! par bhi video banayiye please 🙏❤❤❤❤

[@thegodevil3703]

def check_for_line (n): line_no = 1 with open("practice.txt", "r") as f: for line in f: if line.find (n) != -1: print (line_no) return line_no += 1 return ("not found") print(check_for_line("hi"))

[@kdpr007]

Q1) is there a solution to avoid print one blank line after reading any one line at a time due to impact of implicit ' ' at the end of the string in line1?

[@physicstomystry]

Mam is this also helpful for btech 2nd year Aktu syllabus is this complete and enough to get master upon pythons plz response mam .

[@PDPH742]

Thank you for this lecture ❤ I very happy to learning at 9th 😊😊🎉

[@ImRich-xo8cm]

def search(): with open('practice.txt','r') as f: line1=f.readline() line2=f.readline() line3=f.readline() line4=f.readline() if 'learning' in line1 or line2 or line3 or line4: print('found') else: print('1') search()

[@socialsz5864]

tumne yeto print nhi kerwaya ke kis line mai found hoa ?

[@Mikey-sc1rs]

Had a little difficulty in understanding recursion previous lecture any tips?

[@rewatiraman2956]

do sirshasan yoga , you will understand, recursion is like a sirshasana.

[@Gamer_Harsh7572]

same man i also face difficulty learning it still i don't undestand it any tips

[@aleezasoomro6155]

Ma’am, plz make a playlist for NLP! No credible information for NLP and computational linguistics.

[@HarshSwaroop-u3t]

Thanks you shhh❤ radha ❤

[@bibekyadav9675]

f= open("demo.txt","r") text = f.read() line1 = f.readline() print(line1) print(text) print(type(text)) f.close print(text) & print(line1) kiyu output nahi de raha hai mujhme,,, 2 line blank hoke sidha type(text) print ho raha hai

[@thekveer]

hell dii in my window 10 i am not able to run this code.. i tried several time but its not working so plz help me to resolve this problem

[@Ashwathama814]

Kya problem aa rahi hai?

[@thekveer]

@@Ashwathama814 code run hi nhi ho raha

[@prembainade5902]

Kab se wait kr rha tha chapter 7 ka

[@VideoEditor-I]

di har bar as a output blank space hi arhi h. pls help🙏🙏

[@kapil_Jadhav]

I'm in 11th is there any option to make money after learning python? I really need money?

[@delight5186]

its very help lectures

[@premsharma2595]

00:01 Today we will cover Chapter Seven about file operations. 02:07 RAM is volatile memory and not suitable for permanent storage 06:02 Using physical files in day-to-day operations 08:25 Opening a file in read mode returns a text IO wrapper 13:18 Understanding file reading modes 15:23 Reading a file and printing its contents 19:13 Appending data to a file in A mode 21:17 Differences between different modes 25:09 Different file modes in Python: Read Plus, Write Plus, Append Plus 27:19 Using the 'with' syntax in Python automatically closes the file 31:48 We can delete any file by using the remove function in the os module. 34:24 Replace Java with Python in a file using the replace method. 38:59 Write a function to find the line number of the word 'learning' in a file. 41:02 The code checks if a word exists within a given data string and prints the line number if it does. 45:28 Extract individual numbers from a string and convert them to integers 47:20 The code splits a string of numbers separated by commas and prints them individually.

[@MPPSCGliders]

kuch jyada hi free baitha h bhai tu😂😂😂