Python-RegEx

We import this module to work with regular expressions.

• re

• ReEx

• RegEx

• Reg

The meaning of the meta character * is

• One or more occurrences

• Occurrences only for Numbers

• Zero or more occurrences

• Occurrences only for strings

Which is not a meta character

• *

• %

• /

• \

functions that belongs to regular expression module

• findall

• match

• search

• All the above

"\S" returns a

• Match where the string DOES NOT contain a white space character

• Match where the string CONTAINS a white space character

• Match where the string DOES NOT contain any word characters

• Match where the string DOES NOT contain digits

[^pqr] returns a

• Match for characters p, q, r, P, Q and R only

• Match for characters p, q, and r only

• Match for any character contain p, q, and r

• Match for any character except p, q, and r

Which returns a match for any alphabetic lower or upper case character between a and z.

• [a-z]

• [a-z-A-Z]

• [a-z][A-Z]

• [azAZ]

Which returns a match for any two-digit numbers from 00 and 55

• [0-55]

• [0-5][0-5]

• [0-5-0-5]

• [00-55]

What is the output of the below python program

import re

str = "now a days techies are available in different technologies"

Myvar = re.findall("tech", str)

print(Myvar)

• ['tech'], ['tech']

• ['tech'][2]

• [2]['tech']

• ['tech', 'tech']

What will be the output of the following program

re.sub('technology', 'limited', 'wipro technology')

• wipro

• limited

• wipro limited

• wipro technology