Day 10 - ONLINE TEST - PL03 PYTHON PROGRAMMING

Which function can be used on the file to display a dialog for saving a file?

• Filename = savefilename()

• Filename = asksavefilename()

  Mars

• Fielname = asksaveasfilename()

• No such option in python.

What is the result of applying the following method df.head(), to the dataframe df ?

• Prints the first row of the dataframe

• Prints the first 5 rows of the dataframe

• Prints the first column of the dataframe

• Prints the data frame out

What happens if no arguments are passed to the seek function?

• file position is set to the start of file

• file position is set to the end of file

• file position remains unchanged

• Error

Which of the following functions can be used to check if a file “logo” exists?

• os.path.isFile(logo)

• os.path.exists(logo)

• os.path.isfile(logo)

• os.isFile(logo)

What does the <readlines()> method returns?

• str

• a list of lines

• list of single characters

• list of integers

Which of the following statements correctly explain the function of truncate() method?

• truncates the file’s size

• deletes the content of the file

• truncates the file’s size and returns that content

• None

What is the correct syntax of open() function?

• file = open(file_name, [ access_mode],[buffering])

• file object = open(file_name, [access_mode],[buffering])

• file object = open(file_name)

• None

What is the data type of data read from a file ?

• Integer

• String

• Boolean

• Real

What does 'strip' do ?

• Removes the contents of whole file

• Removes the extra data at the beginning / end of the string

• Adds in metadata

• Splits the file

To read two characters from a file object infile, we use ____________

• infile.read(2)

• infile.read()

• infile.readline()

• infile.readlines()