Python Regular Expression Test - 2

1. The character Dot (that is, ‘.’) in the default mode, matches any character other than _____________

newline

ampersand

caret

percentage symbol

2. Which of the following functions clears the regular expression cache?

re.sub()

re.purge()

re.pos()

re.subn()

3. ________ matches the start of the string.
________ matches the end of the string.

‘?’, ‘^’

‘$’, ‘^’

‘^’, ‘$’

‘$’, ‘?’

4. Which of the following will result in an error?

>>> p = re.escape(‘hello’)

>>> p = re.purge()

>>> p = re.subn()

>>> p = re.compile("d")
>>> p.search("door")

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

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

['Hello', 'hello', 'hello', '']

[‘Hello’, ‘hello’, ‘hello’, ‘.’]

[‘Hello, ‘hello’, ‘hello’]

[‘Hello’, ‘hello’, ‘hello.’]

6. The expression a{5} will match _____________ characters with the previous regular expression.

exactly 5

5 or less

5 or more

exactly 4

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

import re
re.ASCII

256

8. What will be the output of the following Python function?

re.findall("hello world", "hello", 1)

hello

hello world

[ ]

[“hello”]

9. Choose the function whose output can be: <_sre.SRE_Match object; span=(4, 8), match='aaaa'>.

>>> re.match('aaa', "alohaaa", 0)

>>> re.search('aaa', "alohaaa", 0)

>>> re.search('aaaa', "alohaaaa", 0)

>>> re.match('aaaa', "alohaaaa", 0)

10. Which of the following functions results in case insensitive matching?

re.I

re.X

re.U

re.A