laboursonline – MCQs, Mock Tests | Python File Handling in Python section 2

Rohan opened the file “myfile.txt” by using the following syntax. His friend told him few advantages of the given syntax. Help him to identify the correct advantage. with open ("myfile.txt", "a") as file_object:

1. In case the user forgets to close the file explicitly the file will closed automatically.
2. file handle will always be present in the beginning of the file even in append mode.
3. File will be processed faster
4. None of the above

✅ Correct Answer: 1

Mohan wants to open the file to add some more content in the already existing file. Suggest him the suitable mode to open the file.

1. read mode
2. append mode
3. write mode
4. All the above

✅ Correct Answer: 2

Aman jotted down few features of the “write mode”. Help him to identify the valid features.

1. If we open an already existing file in write mode, the previous data will be erased
2. In write mode, the file object will be positioned at the beginning of the file.
3. In write mode, if the file does not exist then the new file will be created.
4. All the above

✅ Correct Answer: 3

Ananya jotted down few features of the “append mode”. Help her to identify the valid features.

1. If we open an existing file in append mode, the previous data will remain there.
2. In append mode the file object will be positioned at the end of the file.
3. In append mode, if the file does not exist then the new file will be created.
4. All the above

✅ Correct Answer: 3

Which of the following methods can be used to write data in the file?

1. write( )
2. writelines( )
3. Both of the above
4. None of the above

✅ Correct Answer: 3

Write the output of the following: >>> f = open("test.txt","w") >>> f.write("File #Handling")

1. 17
2. 16
3. 14
4. 15

✅ Correct Answer: 3

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

1. Syntax Error
2. TypeError
3. StringError
4. Run Time Error

✅ Correct Answer: 1

Which of the following method is used to clear the buffer?

1. clear( )
2. buffer( )
3. flush( )
4. clean( )

✅ Correct Answer: 3

Which of the following method does not return the number of characters written in the file.

1. write( )
2. writelines( )
3. Both of the above
4. None of the above

✅ Correct Answer: 2

Fill in the blank in the given code: >>> fo = open("myfile.txt",'w') >>> lines = ["Hello ", "Writing strings ", "third line"] >>> fo._____________(lines) >>>myobject.close()

1. write( )
2. writelines( )
3. . writeline( )
4. None of the above

✅ Correct Answer: 2

In order to read the content from the file, we can open file in ___________

1. “r” mode
2. “r+” mode
3. “w+” mode
4. All the above

✅ Correct Answer: 4

Which of the following method is used to read a specified number of bytes of data from a data file.

1. read( )
2. read(n)
3. readlines( )
4. reading(n)

✅ Correct Answer: 2

Write the output of the following: f=open("test.txt","w+") f.write("File-Handling") a=f.read(5) print(a)

1. File-
2. File
3. File-H
4. No Output

✅ Correct Answer: 4

Write the output of the following: f=open("test.txt","w+") f.write("FileHandling") f.seek(5) a=f.read(5) print(a)

1. andli
2. Handl
3. eHand
4. No Output

✅ Correct Answer: 1

Write the output of the following: f=open("test.txt","w+") f.write("FileHandling") f.seek(0) a=f.read() print(a)

1. File
2. Handling
3. FileHandling
4. No Output

✅ Correct Answer: 3

Write the output of the following: f=open("test.txt","w+") f.write("FileHandling") f.seek(0) a=f.read(-1) print(a)

1. File
2. Handling
3. FileHandling
4. No Output

✅ Correct Answer: 3

Which of the following method reads one complete line from a file?

1. read( )
2. read(n)
3. readline( )
4. readlines( )

✅ Correct Answer: 3

Write the output of the following: f=open("test.txt","w+") f.write("File Handling") f.seek(0) a=f.readline(-1) print(a)

1. File Handling
2. FileHandling
3. File
4. No Output

✅ Correct Answer: 3

Write the output of the following: f=open("test.txt","w+") f.write("File Handling") f.seek(0) a=f.readline(2) print(a)

1. File Handling
2. FileHandling
3. Fi
4. No Output

✅ Correct Answer: 3

Select the correct statement about the code given below: >>> myobj=open("myfile.txt", 'r') >>> print(myobj.readlines())

1. This code will read one line from the file.
2. This code will read all the lines from the file.
3. This code will read only last line from the file.
4. None of the above

✅ Correct Answer: 2

Write the output of the following: f=open("test.txt","w+") L = ["My name ", "is ", "Amit"] f.writelines(L) f.seek(0) a=f.readlines() print(type(a))

1. <class ‘tuple’>
2. <class ‘list’>
3. <class ‘string’>
4. None of the above

✅ Correct Answer: 2

Which of the following function return the data of the file in the form of list?

1. read( )
2. read(n)
3. readline( )
4. readlines( )

✅ Correct Answer: 4

Sanjeev has written a program which is showing an error. As a friend of Sanjeev, help him to identify the wrong statement. f=open("test.txt","w") #Statement1 L = ["My name ", "is ", "Amit"] #Statement2 f.writeline(L) #Statement3 f.close() #Statement4

1. . Statement1
2. . Statement2
3. . Statemen3
4. . Statement4

✅ Correct Answer: 3

__________________ function returns an integer that specifies the current position of the file object in the file.

1. seek( )
2. tell( )
3. disp( )
4. None of the above

✅ Correct Answer: 2

_____ method is used to position the file object at a particular position in a file.

1. tell( )
2. seek( )
3. put( )
4. None of the above

✅ Correct Answer: 2

In reference to the code given below, the file object will move _______ bytes. file_object.seek(10, 0)

1. 0
2. 10
3. 5
4. 4

✅ Correct Answer: 2

Ravi wants to move the file object 5 bytes from the current position of the file object. As a friend of Ravi, help him to write the code.

1. file_object.seek(5, 1)
2. file_object.seek(1, 5)
3. file_object.seek(5, 0)
4. file_object.seek(5, 2)

✅ Correct Answer: 1

Write the output of the following code: f=open("test.txt","w+") f.write("My name is Amit ") f.seek(5,0) a=f.read(5) print(a)

1. me i
2. . ame is
3. me is
4. Error

✅ Correct Answer: 3

Write the output of the following: f=open("test.txt","r") print(f.tell())

1. 1
2. 2
3. -1
4. 0

✅ Correct Answer: 4

Write the output of the following: f=open("test.txt","r") print(f.tell(),end="6") f.seek(5) print(f.tell())

1. 165
2. 650
3. 065
4. 506

✅ Correct Answer: 3

How many functions are used in the given code? fileobject=open("practice.txt","r") str = fileobject.readline() while str: print(str) str=fileobject.readline() fileobject.close()

1. 3
2. 4
3. 5
4. 6

✅ Correct Answer: 3

________ method is used to write the objects in a binary file.

1. write( )
2. dump( )
3. load( )
4. writer( )

✅ Correct Answer: 2

______ method is used to read data from a binary file.

1. a. write( )
2. dump( )
3. load( )
4. writer( )

✅ Correct Answer: 3

Which module is to be imported for working in binary file?

1. unpickle
2. pickle
3. pickling
4. unpickling

✅ Correct Answer: 2

Which of the following statement open the file “marker.txt” so that we can read existing content from file?

1. f = open(“marker.txt”, “r”)
2. f = Open(“marker.txt”, “r”)
3. f = open(“marker.txt”, “w”)
4. None of the above

✅ Correct Answer: 1

Which of the following statement open the file “marker.txt” as a blank file?

1. f = open(“marker.txt”, “r”)
2. f = open(“marker.txt”, “rb”)
3. f = open(“marker.txt”, “w”)
4. None of the above

✅ Correct Answer: 3

Amit has written the following statement. He is working with ______ f = open("data", "rb")

1. Text File
2. CSV File
3. Binary File
4. None of the above

✅ Correct Answer: 3

Which of the following option is correct?

1. if we try to write in a text file that does not exist, an error occurs
2. if we try to read a text file that does not exist, the file gets created.
3. if we try to write on a text file that does not exist, the file gets Created.
4. None of the above

✅ Correct Answer: 3

Correct syntax of tell( ) function is _________. #f is file object

1. f.tell( )
2. tell(f)
3. f_tell( )
4. None of the above

✅ Correct Answer: 1

The syntax of seek() is: file_object.seek(offset [, reference_point]). ___________________ value of reference_point indicate end of file

1. 0
2. 1
3. 2
4. 3

✅ Correct Answer: 3

Which of the following statement is wrong in reference to Text file?

1. A text file is usually considered as a sequence of characters consisting of alphabets, numbers and other special symbols.
2. Each line of a text file is terminated by a special character.
3. Text files are not in Human readable form.
4. Text files can be opened in Text editor.

✅ Correct Answer: 3

Identify the statement which can not be interpret from the given code:f = open("test.dat", "ab+")

1. test.dat is a binary file
2. reading operation can be done on test.dat
3. appending operation can be done on test.dat
4. test.dat contains records about books

✅ Correct Answer: 4

Which module is to be imported for CSV file?

1. pickle
2. unpickle
3. csv
4. pandas

✅ Correct Answer: 3

Write the output of the following code : import csv f = open(“data.csv”, ‘r’) row = csv.reader(f) print(row)

1. It prints the memory address where csv.reader object is stored
2. It prints the first record of data.csv
3. It prints all the records of data.csv
4. None of the above

✅ Correct Answer: 1

_______ function help us to read the csv file.

1. reader( )
2. read( )
3. read(n)
4. readline( )

✅ Correct Answer: 1

Write the output of the second print statement of the given code: f=open("test.txt","r") print(f.read()) f.seek(7) print(f.read()) Output of first print statement is : MynameisAmit

1. isAmit
2. sAmit
3. Amit
4. eisAmit

✅ Correct Answer: 2

Which of the following method returns an integer value?

1. seek( )
2. read( )
3. tell( )
4. readline( )

✅ Correct Answer: 3

________ refers to the process of converting the structure to a byte stream before writing it to the file.

1. pickling
2. unpickling
3. reading
4. writing

✅ Correct Answer: 1

Fill in the blank in the given code : import pickle f = open("data.dat", "rb") l = pickle._______(f) print(l) f.close()

1. dump
2. load
3. write
4. list

✅ Correct Answer: 2

Write the output of the following code: f = open("data.txt","w") L=["My ","name ","is ","amit"] f.writelines(L) f.close() f = open("data.txt","r") print(len(f.read()))

1. 13
2. 14
3. 15
4. 16

✅ Correct Answer: 3

Write the output of the following code: f = open("data.txt","w") L=["My ","name ","is ","amit"] f.writelines(L) f.close() f = open("data.txt","r") print(len(f.readlines()))

1. 4
2. 5
3. 6
4. 7

✅ Correct Answer: 4

Write the output of the following code: f = open("data.txt","w") L=["My ","name ","is ","amit"] f.writelines(L) f.close() f = open("data.txt","r") print(len(f.readline()))

1. 2
2. 3
3. 4
4. 5

✅ Correct Answer: 2

import pickle f = open("data.dat", "wb") L = [1, 2, 3] pickle._______ f.close()

1. dump(f, L)
2. load(f, L)
3. dump(L, f)
4. load(L, f)

✅ Correct Answer: 3

Which of the following statement will return attribute error?

1. print(len(f.readlines( ).split( ))) #f is file handle
2. print(len(f.readline( ).split( ))) #f is file handle
3. print(len(f.read( ).split( ))) #f is file handle
4. None of the above

✅ Correct Answer: 1

Ravi is writing a program for counting the number of words in a text file named “data.txt”. He has written the incomplete code. Help him to complete the code. f = open("_________","r") # Statement 1 d = f._________ # Statement 2 nw = d._________ # Statement 3 print("Number of words are", _________(nw)) # Statement 4 Identify the suitable code for blank space in the line marked as Statement 1

1. “data.txt”
2. data.txt
3. “data”
4. data

✅ Correct Answer: 2

Ananya was writing a program of reading data from csv file named “data.csv”. She writes the incomplete code. As a friend of Ananya help her to complete the code. ________ csv #Statement1 f=open("data.csv", '_______') #Statement2 d=csv.___________(f) #Statement3 for __________ in d: #Statement4 print(row) Identify the suitable option for Statement 1

1. import
2. create
3. data
4. Import

✅ Correct Answer: 1

Chinki is writing a program to copy the data from “data.csv” to “temp.csv”. However she is getting some error in executing the following program due to some missing commands. Help her to execute it successfully. import csv f=open(“data.csv”,”r”) f1=open(“temp.csv”,’__________’) #Statement 1 d=csv._________(f) #Statement 2 d1=csv.writer(f1) for i in d: ___________.writerow(i) #Statement3 f.close( ) f1.close( )

1. r
2. rb+
3. wa
4. w

✅ Correct Answer: 4