Python Quiz 7(Prutor)

NOTE -ANSWERS ARE AT THE BOTTOM OF THE PAGE 

Q:1. If we have a file object as fileobj, then What does the attribute 'closed' will tell on this file obj ?

1.tells (True of False) whether theFile is closed or not

2.Reads and return ‘something’

3.read a single line from theFile, including the newline character

4.modify the file object for theFile so that the next read will be from

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Q:2. In python, _____ method gets the position of file handle while ____ method changes the position of file handle to the specific position.

1.seek, tell

2.tell, seek

3.read, tell

4.tell, change

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Q:3. What will be the output of the following given code?

		
with open("myfile.txt", "w") as f:
    f.write("Hello World Python Programming")
    
with open('myfile.txt', 'w+') as f:
    f.write("Hello")
    f.seek(0)
    data = f.readlines()
    for line in data:
        words = line.split()
        print (words)

1.['Hello']

2.['Hello World Python Programming']

3.['Hello', 'World', 'Python', 'Programming']

4.Runtime Error

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Q:4. In the readlines() method -

1.it returns a string.

2.it returns a list of lines.

3.an optional parameter sizehint can be used to limit the number of bytes to read from a file.

4.Both 2 and 3

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Q:5. In python, try-except has an optional else clause, which will execute -

1.always.

2.when try clause does not raise exception.

3.when OSError happens.

4.All of the above.

Answers

1-a)It is read only property and returns a Boolean value( true or false).The value is true if file is closed and false if not closed.

2-b)These are pre-defined/inbuilt. methods in python.

3-a)The program first opens 'myfile.txt' and writes 'hello world Python programming' but it also writes after this again and writes 'hello'.

4-d)Readlines method is used to read a list of lines in a file and we can also limit the number of lines returned by it using the Sizehint parameters.

5-d)All the options are correct because except keyword is used for exceptions and we can always use it whether program executes, an OSerror happens or try clause doesn't raise exception.