The contains_acronym function checks the text for the presence of 2 or more characters or digits surrounded by parentheses, with at least the first character in uppercase (if it's a letter), returning True if the condition is met, or False otherwise. For example, "Instant messaging (IM) is a set of communication technologies used for text-based communication" should return True since (IM) satisfies the match conditions." Fill in the regular expression in this function:

Following are the code to this question:

import re#import package regular expression

def contains_acronym(val): #defining a method contains_acronymn that accepts text value in parameter

   match= r"\([A-Z1-9][a-zA-Z1-9]*\)"#defining match variable that uses upper case, number, and lower case value  

   r= re.search(match, val)#defining r varaible that uses search method to search values

   return r!= None #use return keyword  

val="Instant messaging (IM) is a set of communication technologies used for text-based communication"

print(contains_acronym(val))#use print function to call method and print its return value

Output:

True

Explanation:

In the above-given code, first, we import package "regular expression" this package is used to check the string, In the next line, a method "contains_acronym" is defined that accepts a "val" variable in its parameters.

a  social news website  is an  internet  website  that features  user-posted stories. such stories are ranked based on popularity, as voted on by other users of the site or by website administrators. users typically comment online on the news posts and these comments may also be ranked in popularity. since their emergence with the birth of  web 2.0, social news sites have been used to link many types of information, including news, humor, support, and discussion. all such websites allow the users to submit content and each site differs in how the content is moderated. on the  slashdot  and  fark  websites,  administrators  decide which articles are selected for the front page. on  reddit  and  digg, the articles that get the most votes from the community of users will make it to the front page. many social news websites also feature an online comment system, where users discuss the issues raised in an article. some of these sites have also applied their voting system to the comments, so that the most popular comments are displayed first. some social news websites also have a  social networking  function, in that users can set up a user profile and follow other users' online activity on the website.