Regular Expressions in Python

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The function re.error raises an exception if a particular string contains no match for the given pattern.

A) True B) False

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Answer & Solution

Answer: Option B

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What will be the output of the following Python code?

re.split('\W+', 'Hello, hello, hello.')

A) ['Hello', 'hello', 'hello.'] B) ['Hello, 'hello', 'hello'] C) ['Hello', 'hello', 'hello', '.'] D) ['Hello', 'hello', 'hello', "]

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Answer & Solution

Answer: Option D

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. . . . . . . . matches the start of the string.
. . . . . . . . matches the end of the string.

A) '^', '$' B) '$', '^' C) '$', '?' D) '?', '^'

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Answer & Solution

Answer: Option A

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What is the output of the following code:

import re
result = re.search(r'd{2}', 'There are 25 apples and 3 oranges.')
print(result.group())

A) 25 B) An error will occur C) 2 D) 5

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Answer & Solution

Answer: Option A

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What will be the output of the following Python code?

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

A) ['h', 'e', 'l', 'l', 'o'] B) re.compile('hello', re.VERBOSE) C) Error D) Junk value

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Answer & Solution

Answer: Option B

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What will be the output of the following Python code?

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

A) 'XXXXAA, 4' B) ('AAAAAA', 4) C) ('XXXXAA', 4) D) 'AAAAAA, 4'

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Answer & Solution

Answer: Option C

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What is the purpose of the re.findall() function in Python?

A) It finds all occurrences of a pattern in a string and returns them as a list B) It converts strings to regular expressions C) It searches for a match anywhere in the string D) It checks if a string contains a specific character

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Answer & Solution

Answer: Option A

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Which of the following functions clears the regular expression cache?

A) re.sub() B) re.pos() C) re.purge() D) re.subn()

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Answer & Solution

Answer: Option C

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What will be the output of the following Python code?

re.split(r'\s+', 'Chrome is better than explorer', maxspilt=3)

A) ['Chrome', 'is', 'better', 'than', 'explorer'] B) ['Chrome', 'is', 'better', 'than explorer'] C) ('Chrome', 'is', 'better', 'than explorer') D) 'Chrome is better' 'than explorer'

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Answer & Solution

Answer: Option B

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What will be the output of the following Python code?

import re
re.ASCII

A) 8 B) 32 C) 64 D) 256

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Answer & Solution

Answer: Option D

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