Regular Expression in Python

Which module in Python supports regular expressions?

• re

• regex

• pyregex

• none of the mentioned

Which of the following creates a pattern object?

• re.create(str)

• re.regex(str)

• re.compile(str)

• re.assemble(str)

What does the function re.match do?

• matches a pattern at the start of the string

• matches a pattern at any position in the string

• such a function does not exist

• none of the mentioned

____________ character is used to represent zero or more occurrences of the preceding character in a regular expression

What is the output of the following code?

import re
pattern = r'\d+'
result = re.findall(pattern, 'The price is $25 and $50')
print(result)

• ['25', '50']

• ['$25', '$50']

• ['The', 'is', 'and']

• [ ]

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

• Searches for a pattern at the end of a string

• Searches for a pattern anywhere in a string

• Searches for a pattern at the beginning of a string

• Searches for a pattern case-insensitively

In a regular expression, what does [a-zA-Z] represent?

• Matches any single character

• Matches any lowercase letter

• Matches any uppercase letter

• Matches any letter

What does the \s in a regular expression pattern represent?

• Any character

• 
  Any digit

• Any whitespace character

• Any special character

In a regular expression, what does {2} represent?

• Matches exactly 2 occurrences

• Matches 0 or more occurrences

• Matches 1 or more occurrences

• Matches 2 or more occurrences

What does the "\b" pattern represent in RegEx?

• Backspace character

• Word boundary

• Beginning of a line

• End of a line