Python and CSV files Additional Practice Test

12th Standard Computer Science — Python and CSV files: Additional Online Practice Test

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Which of the following file extensions is used for saving a Comma-Separated Values file?

A..xls B..xlsx C..csv D..txt

What is another name commonly used to refer to a CSV file because of its plain, tabular structure?

A.Binary File B.Flat File C.Relational File D.Rich Text File

If a specific field in a CSV file contains a comma as part of its actual data, how should that field be formatted?

A.Enclosed in single quotes B.Enclosed in double-quotes C.Preceded by a backslash D.Separated by semicolons

When field data in a CSV file contains double-quotes as part of its actual value, how is it represented under standard formatting rules?

A.Enclosed in single quotes B.Doubled, and the entire field is enclosed in double-quotes C.Replaced with single quotes D.Preceded by a slash symbol

Which Python module provides the built-in library functions to parse and process CSV files?

A.sys B.os C.csv D.excel

What is the default file opening mode when using the built-in open() function in Python?

A.'w' B.'a' C.'rt' D.'rb'

Which block statement is recommended to open files in Python to ensure they are automatically closed even if an exception occurs?

A.with B.open C.try...except D.import

Which method of the csv.writer class is used to write a single row of data into a CSV file?

A.writerow() B.writerows() C.write() D.writeline()

Which class of the Python csv module reads a CSV file and maps its data rows to dictionaries instead of lists?

A.csv.reader B.csv.DictReader C.csv.DictWriter D.csv.writer

Q10

What subclass of dictionary does the csv.DictReader class return by default for each row it iterates over in Python?

A.list B.tuple C.OrderedDict D.set

Q11

How can the default OrderedDict returned by csv.DictReader be converted into a standard Python dictionary?

A.Using the list() function B.Using the dict() function C.Using the tuple() function D.Using the set() function

Q12

Which formatting parameter of csv.register_dialect() is set to True to remove whitespaces immediately following a delimiter?

A.skipinitialspace B.quoting C.escapechar D.doublequote

Q13

Which built-in Python function can be used to skip the header row of a CSV file before sorting or processing its data rows?

A.skip() B.next() C.pop() D.advance()

Q14

To sort a CSV file based on multiple columns, which operator function is passed as a key in the sorted() function?

A.operator.sortby() B.operator.itemgetter() C.operator.getter() D.operator.field()

Q15

Which of the following line terminators are accepted by Python's CSV module for terminating rows?

A.Only \n B.Only \r\n C.\r\n, \n, or \r D.Any custom string including tab characters

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About this Python and CSV files test

This free online practice test covers Python and CSV files from the 12th Standard Computer Science (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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