Python Questions and Answers – Regular Expressions – 2

This set of Python Multiple Choice Questions & Answers (MCQs) focuses on “Regular Expressions – 2”.

1. What will be the output of the following Python code?

import re
print(re.compile('hello', re.X))

a) [‘h’, ‘e’, ‘l’, ‘l’, ‘o’]
b) re.compile(‘hello’, re.VERBOSE)
c) Error
d) Junk value
View Answer

2. What will be the output of the following Python code?

import re
print(re.split('[a-c]', '0a3B6', re.I))

a) Error
b) [‘a’, ‘B’]
c) [‘0’, ‘3B6’]
d) [‘a’]
View Answer

3. What will be the output of the following Python code?

import re
print(re.sub('morning', 'evening', 'good morning'))

a) ‘good evening’
b) ‘good’
c) ‘morning’
d) ‘evening’
View Answer

4. The function re.error raises an exception if a particular string contains no match for the given pattern.
a) True
b) False
View Answer

5. What will be the output of the following Python code?

import re
print(re.escape('new**world'))

a) ‘new world’
b) ‘new\\*\\*world’
c) ‘**’
d) ‘new’, ‘*’, ‘*’, ‘world’
View Answer

6. What will be the output of the following Python code?

import re
print(re.fullmatch('hello', 'hello world'))

a) No output
b) []
c) <_sre.SRE_Match object; span=(0, 5), match=’hello’>
d) Error
View Answer

re.fullmatch('hello', 'hello world')

7. Choose the option wherein the two choices do not refer to the same option.
a)

   re.I
   re.IGNORECASE

b)

   re.M
   re.MULTILINE

c)

   re.X
   re.VERBOSE

d)

   re.L
   re.LOWERCASE

8. The difference between the functions re.sub and re.subn is that re.sub returns a _______________ whereas re.subn returns a __________________
a) string, list
b) list, tuple
c) string, tuple
d) tuple, list
View Answer

9. What will be the output of the following Python code?

import re
print(re.split('mum', 'mumbai*', 1))

a) Error
b) [”, ‘bai*’]
c) [”, ‘bai’]
d) [‘bai*’]
View Answer

10. What will be the output of the following Python code?

import re
print(re.findall('good', 'good is good'))
print(re.findall('good', 'bad is good'))

a)

[‘good’, ‘good’]
[‘good’]

b)

(‘good’, ‘good’)
(good)

c)

(‘good’)
(‘good’)

d)

[‘good’]
[‘good’]

Sanfoundry Global Education & Learning Series – Python.

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