Python File handling - 2

Which of the following command is used to open a file “c:\temp.txt” in read-mode only?

• infile = open(“c:\temp.txt”, “r”)

• infile = open(“c:\\temp.txt”, “r”)

• infile = open(file = “c:\temp.txt”, “r+”)

• infile = open(file = “c:\\temp.txt”, “r+”)

Which of the following command is used to open a file “c:\temp.txt” in write-mode only?

• outfile = open(“c:\temp.txt”, “w”)

• outfile = open(“c:\\temp.txt”, “w”)

• outfile = open(file = “c:\temp.txt”, “w+”)

• outfile = open(file = “c:\\temp.txt”, “w+”)

Which of the following command is used to open a file “c:\temp.txt” in append-mode?

• outfile = open(“c:/temp.txt”, “a”)

• outfile = open(“c:\temp.txt”, “w+”)

• outfile = open(“c:\\temp.txt”, “a”)

• outfile = open(“c:\\temp.txt”, “r+”)

Which of the following statements are true regarding the opening modes of a file?

A. When you open a file for reading, if the file does not exist, an error occurs.

B. When you open a file for writing, if the file does not exist, an error occurs.

C. When you open a file for reading, if the file does not exist, the program will open an empty file.

D. When you open a file for writing, if the file does not exist, a new file is created.

E. When you open a file for writing, if the file exists, the existing file is overwritten with the new file.

• Only A

• A and B

• A, D and E

• A, B and E

Which of the following commands can be used to read “n” number of characters from a file using the file object <file>?

• file.read(n)

• n = file.read()

• file.readline(n)

• file.readlines()

Which of the following commands can be used to read the entire contents of a file as a string using the file object <tmpfile>?

• tmpfile.read(n)

• tmpfile.read()

• tmpfile.readline()

• tmpfile.readlines()

Which of the following commands can be used to read the next line in a file using the file object <tmpfile>?

• tmpfile.read(n)

• tmpfile.read()

• tmpfile.readline()

• tmpfile.readlines()

What does the <readlines()> method returns?

• str

• a list of lines

• list of single characters

• list of integers

Which of the following commands can be used to read the remaining lines in a file using the file object <tmpfile>?

• tmpfile.read(n)

• tmpfile.read()

• tmpfile.readline()

• tmpfile.readlines()

What are the two built-in functions to read a line of text from standard input, which is by default the keyboard?

• Input

• Read

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