Welcome to the Regular Expressions and Files MCQs Page

Dive deep into the fascinating world of Regular Expressions and Files with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Regular Expressions and Files, a crucial aspect of Python. In this section, you will encounter a diverse range of MCQs that cover various aspects of Regular Expressions and Files, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Python.

Check out the MCQs below to embark on an enriching journey through Regular Expressions and Files. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Python.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Regular Expressions and Files. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Regular Expressions and Files MCQs | Page 9 of 10

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Q81.

How do you rename a file?

fp.name = ‘new_name.txt’

os.rename(existing_name, new_name)

os.rename(fp, new_name)

os.set_name(existing_name, new_name)

Discuss

Answer: (b).os.rename(existing_name, new_name)

Q82.

How do you delete a file?

del(fp)

fp.delete()

os.remove(‘file’)

os.delete(‘file’)

Discuss

Answer: (c).os.remove(‘file’)

Q83.

How do you change the file position to an offset value from the start?

fp.seek(offset, 0)

fp.seek(offset, 1)

fp.seek(offset, 2)

none of the mentioned

Discuss

Answer: (a).fp.seek(offset, 0)

Q84.

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

Discuss

Answer: (d).error

Q85.

Which of the following statements are true ?

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

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

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

All of the mentioned

Discuss

Answer: (d).All of the mentioned

Q86.

What is the output of the code shown?

re.match('sp(.*)am', 'spam')

<_sre.SRE_Match object; span=(1, 4), match='spam'>

<_sre.SRE_Match object; span=(0, 4), match='spam'>

No output

Error

Discuss

Answer: (b).<_sre.SRE_Match object; span=(0, 4), match='spam'>

Q87.

Which of the following special characters represents a comment (that is, the contents of the parenthesis are simply ignores)?

(?:…)

(?=…)

(?!…)

(?#…)

Discuss

Answer: (d).(?#…)

Q88.

Which of the codes shown below results in a match?

re.match(‘George(?=Washington)’, ‘George Washington’)

re.match(‘George(?=Washington)’, ‘George’)

re.match(‘George(?=Washington)’, ‘GeorgeWashington’)

re.match(‘George(?=Washington)’, ‘Georgewashington’)

Discuss

Answer: (c).re.match(‘George(?=Washington)’, ‘GeorgeWashington’)

Q89.

What is the output of the code shown below?

import re
s = 'abc123 xyz666 lmn-11 def77'
re.sub(r'\b([a-z]+)(\d+)', r'\2\1:', s)

‘123abc: 666xyz: lmn-11 77def:’

‘77def: lmn-11: 666xyz: 123abc’

‘abc123:’, ‘xyz666:’, ‘lmn-11:’, ‘def77:’

‘abc123: xyz666: lmn-11: def77’

Discuss

Answer: (a).‘123abc: 666xyz: lmn-11 77def:’

Q90.

What is the output of the code shown?

re.subn('A', 'X', 'AAAAAA', count=4)

‘XXXXAA, 4’

(‘AAAAAA’, 4)

(‘XXXXAA’, 4)

‘AAAAAA, 4’

Discuss

Answer: (c).(‘XXXXAA’, 4)

Page 9 of 10

Welcome to the Regular Expressions and Files MCQs Page

Regular Expressions and Files MCQs | Page 9 of 10

Explore more Topics under Python

Variables,Operators and Data Types

Formatting and Decorators

Loops in Python

Strings in Python

Lists in Python

Tuples and Sets

Dictionary and Built in Functions

Mapping Functions and Modules

Classes,Objects and OOPS concepts

Miscellaneous topics in Python

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