Data File Handling Computer Science - Data File Handling

What is the correct syntax of open() function?

Which of the following are the attributes related to a file object?

Which of the following functions do you use to write data in the binary format?

Which of the following command is used to open a file "d:temp.txt" for writing in binary format only?

What does the method returns?

A text file “Quotes.Txt” has the following data written in it:
Living a life you can be proud of
Doing your best
Spending your time with people and activities that are important to you
Standing up for things that are right even when it’s hard
Becoming the best version of you.
Write the output of the given program.

Assume that file “tear.txt”, already contain “I love my India” in the file. What will be the output of the given program:

Assume that file “tear.txt”, already contain “I love my India” in the file. What will be the output of the given program:

Write the output of the given program:

Observe the following code and answer the questions that follow:

(i) What type (Text/Binary) of file is Mydata?
(ii) Fill the Blank 1 with statement to write “ABC” in the file “Mydata”.

Write a function to read the content from the file “Story.txt”. The function will take a string as parameter and search the string into the file.

Write a function to read the content from the file and print all the upper case word.

Write a function to read the content from the file and display each word in reverse order.

Write a function to display the alternate lines from the file.

Write a function to copy all the upper case words to another file. 

Write a function delrecord() to delete the record form the binary file “employee”. The record should be delete on the basis of employee number.

Write a function update () to update the record in the binary file “employee”, which consist of employee number, employee name and salary. The updation should be done on the basis of employee number entered by the user.

Write a function search () to search a record in a binary file according to the employee number entered by the user. Also display the message “Record not found” in case record not found in the file.

Write a function readall() the record from the binary file “employee” and display all the records.

Write a function addrecord() a add new record to the binary file “employee” using list. The list should consist of employee number, employee name and salary.

Krishna is confused in Python code given below. Please help him to answer the following questions.

(a) Which line in the above code check for capital letter?

(b) Which line in the above code read the file “story. txt”?

(c) Which line in the above code does not affect the execution of program?

(d) Which line is the above code coverts capital letter to small letter?

(e) Which line is the above code opens the file in write mode?

(f) Which line is the above code saves the data?

(g) Which line(s) is/are the part of selection statement.

(h) Which line(s) is/are used to close story1.txt?

Krishna of class 12 is writing a program to read the details of Sports performance and store in the csv file “games.csv” delimited with a tab character. As a programmer, help him to achieve the task.

(a)Line 1 : Name the module he should import.

(b)Line 2 : To create an object to enable to write in the csv file.

(c)Line 3 : To store the data in list

(d)Line 4 : To write a record.

(e)Line 5 : To close the file.

Dhruv Kumar of class 12 is writing a program to create a CSV file “Teacher.csv” which will store the teacher information entered by user. He has written the following code. As a programmer, help him to successfully execute the given task. Write appropriate statement / function/ code against fill ups.

You are a student in CBSE School. Teacher has given a task to write a python code to perform the following binary file operations with the help of two user defined functions/modules:

Mr. Mathew is a programmer, who has recently joined the company and given a task to write a python code to perform update operation in binary file (stud.dat) which contain admno (Admission No) and fee(Fee paid by student).

(a)

Aarti is new in python data-handling. Please help her to count the number of lines which begins with ‘W’ or ‘w’ in poem.txt.

(a) # Line 1 : To open file POEM.txt in read mode

(b) # Line 2 : To check first character of every line is ‘W’ or ‘w’.

(c) # Line 3 : To increase the value of count by 1.

(d) # Line 4 : To call the function count_poem.

Write a function AverageColumn() which accepts csv file as parameter. It will print sum and average of each row. For example if marks.csv contain 50,60,70,80,90 70,60,50,60,80 50,60,70,80,90 Then OUTPUT will be Sum is : 350.0 Average is : 116.66666666666667 Sum is : 320.0 Average is : 106.66666666666667 Sum is : 350.0 Average is : 175.0

Write a program to count no. of records in csv file and display the records in tabular form. Admno, Name, Eng, Hindi, Maths, Sci, Ssc 1101 1102 1103 1104 1105 Tejas Swati Sam Imran Heena 80 90 90 75 85 85 85 80 76 90 95 94 64 80 90 94 96 85 80 75 86 80 70

Write a menu driven program to do the following option on binary file “Student”. The program should implement through list which contains student number, student name and marks. Student Menu ------------------ 1) Add New Student 2) Display student details 3) Search student 4) Update a Record 5) Delete a Record 6) Save & Quit

Write a function delrecord() to delete the record form the binary file “student”. The record should be deleted on the basis of student number.