QUIZ ON : python - FILE PROCESSING IN PYTHON

FILE PROCESSING IN PYTHON

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Question No# : 01 out of 50

What is mean by 'rb' mode when working with binary file in python

A. read binary

B. write binary

C. append binary

D. read write

Question No# : 02 out of 50

What will be the output of : infile.read(2)

A. Read two words from file

B. Read two line from file

C. Read two character / two bytes

D. count the number of '2' in file

Question No# : 03 out of 50

to use load() function for working with binary file in python which module is require

A. pickle

B. binary

C. unpickle

D. fstream

Question No# : 04 out of 50

Which of the following declarations is incorrect?

A. _x=2

B. x=3

C. _xyz_=5

D. None of these

Question No# : 05 out of 50

Which statement will move file pointer 10 bytes backward from current position.

A. f.seek(-10, 0)

B. f.seek(10,0)

C. f.seek(-10, 1)

D. None of the above

Question No# : 06 out of 50

Which of the following mode will refer to binary data?

A. r

B. w

C. +

D. b

Question No# : 07 out of 50

Which of the following is not a correct mode to open a file ?

A. ab

B. rw

C. a+

D. r+

Question No# : 08 out of 50

The syntax used to rename a file :

A. os.rename(existing_name, new_name)

B. fq.name = ‘new_name.txt’

C. os.rename(fp, new_name)

D. os.set_name(existing_name, new_name)

Question No# : 09 out of 50

Which mode creates a file if it does not exist and appends data?

A. r

B. w

C. a

D. r+

Question No# : 10 out of 50

Which mode creates a new file if the file does not exist?

A. write mode

B. read mode

C. append mode

D. Both (A) And (C)

Question No# : 11 out of 50

Which of the following options can be used to read the first line of a text file data.txt?

A. f = open('data.txt'); f.read()

B. f = open('data.txt','r'); f.read(n)

C. myfile = open('data.txt'); f.readline()

D. f= open('data.txt'); f.readlines()

Question No# : 12 out of 50

Which function is used to read all the characters from file?

A. readall()

B. read()

C. readcharacter()

D. readchar()

Question No# : 13 out of 50

Identify the correct function call to read first 5 character of the file from the beginning

A. f.read(5)

B. f.read()=5

C. f.readline(5)

D. f.readlines(5)

Question No# : 14 out of 50

Which mode creates a file if it does not exist?

A. w

B. rb

C. rt

D. r

Question No# : 15 out of 50

Which is the function to read the remaining lines of the file from a file object infile?

A. infile.read(2)

B. infile.read()

C. infile.readlines()

D. infile.readline()

Question No# : 16 out of 50

What happens if the file does not exist?<pre>f = open("abc.txt", "r")</pre>

A. New file is created

B. FileNotFoundError

C. Returns None

D. Opens empty file

Question No# : 17 out of 50

Which function changes the current file position?

A. seek()

B. move()

C. tell()

D. shift()

Question No# : 18 out of 50

What does readlines() method return ?

A. Dictionary

B. String

C. Tuple

D. List

Question No# : 19 out of 50

Which function reads all lines into a list from file?

A. readlines()

B. readline()

C. readlist()

D. readall()

Question No# : 20 out of 50

The syntax of seek() is: file_object.seek(offset [, reference_point]) What does the reference_point indicate?

A. reference_point indicates the current position of the file object

B. reference_point indicates the starting position of the file object

C. reference_point indicates the ending position of the file object

D. None of the above

Question No# : 21 out of 50

How can you write data to a file in Python?

A. write()

B. append()

C. add()

D. insert()

Question No# : 22 out of 50

What will be written to the file?<pre>f = open("test.txt", "w") f.write("ABC") f.write("DEF") f.close()</pre>

A. ABC

B. DEF

C. ABCDEF

D. Error

Question No# : 23 out of 50

Which of the following functions is used to open a file in Python?

A. open_file()

B. file_open()

C. open()

D. read_file()

Question No# : 24 out of 50

What happens if file opened in write mode already exists?

A. Data is appended

B. Error occurs

C. Old content is erased

D. Nothing happens

Question No# : 25 out of 50

Which of the following mode argument is used in file to truncate ?

A. a

B. f

C. w

D. t

Question No# : 26 out of 50

Which of the following statements is used to check if a file exists in Python?

A. file_exists()

B. exists_file()

C. os.path.exists()

D. check_file()

Question No# : 27 out of 50

The function which reads one line from standards input and returns it as a string (removing the trailing newline)

A. raw_input

B. input

C. eval

D. accept

Question No# : 28 out of 50

in python which function is used to read CSV file

A. csv.reader(file)

B. csv.read(file)

C. csv.readcsv(file)

D. csv.readcsvdata(file)

Question No# : 29 out of 50

What does EOF stand for?

A. End Of Folder

B. Exit Open File

C. End Of File

D. Error On File

Question No# : 30 out of 50

Which function returns the strings?

A. readlines()

B. read()

C. Both of the above

D. None of the above

Question No# : 31 out of 50

Which of the following is used to define a block of code in Python language ?

A. try

B. Brackets

C. Indentation

D. Catch

Question No# : 32 out of 50

What is the use of seek() method in files?

A. sets the file's current position at the offset

B. sets the file's previous position at the offset

C. sets the file's current position within the file

D. None of these

Question No# : 33 out of 50

Which function of pickle module is used to write data on binary file

A. dump()

B. write()

C. writeBinary()

D. load()

Question No# : 34 out of 50

Which one is not the attribute of a file ?

A. softspace

B. mode

C. closed

D. rename

Question No# : 35 out of 50

Which statement will return one line from a file (file object is f) ?

A. f.readlines()

B. f.readline()

C. f.read()

D. f.line()

Question No# : 36 out of 50

Each line of a text file is terminated by a special character, called the ___

A. End of File

B. End of Line

C. End of Statement

D. End of program

Question No# : 37 out of 50

A Function used for writing data in the binary format :

A. write

B. output

C. send

D. dump

Question No# : 38 out of 50

Which module in Python provides functions for file and directory manipulation?

A. os

B. fileutils

C. filesystem

D. io

Question No# : 39 out of 50

Which of the following error is returned by the given code ?<pre>f = open("test.txt","w") f.write(345)</pre>

A. Syntax Error

B. Type Error

C. String Error

D. Run Time Error

Question No# : 40 out of 50

Work of tell() method in file processing is

A. Tells you the current position within the file.

B. Tells the size of file you read

C. Tells the start position of the file.

D. Tells the end position of the file.

Question No# : 41 out of 50

What keyword is used in Python to raise exceptions?

A. raise

B. goto

C. try

D. except

Question No# : 42 out of 50

Which is mean by 'a' mode when working with text file.

A. Append File

B. Write File

C. Read File

D. Read and Write both

Question No# : 43 out of 50

which of the following will read entire content of file (file object 'f')?

A. f.reads()

B. f.read()

C. f.read(all)

D. f.read( *)

Question No# : 44 out of 50

What will be the output of the following code?<pre>f=open("demo.txt","r") print(f.tell())</pre>

A. 1

B. 2

C. -1

D. 0

Question No# : 45 out of 50

Which of the function take takes two arguments?

A. dump()

B. load()

C. Both A and B

D. None of the above

Question No# : 46 out of 50

Which of the following is an invalid mode?

A. a

B. ar+

C. r+

D. w

Question No# : 47 out of 50

Which method is used to read the entire content of a file as a string in Python?

A. read()

B. readline()

C. readlines()

D. load()

Question No# : 48 out of 50

What does the 'r' mode signify when opening a file using open() in Python?

A. Read mode

B. Write mode

C. Append mode

D. Binary mode

Question No# : 49 out of 50

What is unpickling?

A. It is used for object serialization

B. It is used for object de-serialization

C. change the string value to number

D. extract the list element in simple variable

Question No# : 50 out of 50

f.read(5) will read________from a file (file object 'f')

A. 5 characters

B. 5 words

C. 5 lines

D. None of the above