If you have any query feel free to chat us!
Happy Coding! Happy Learning!
Lecture 96:- Reverse A String RE
To reverse a string using regular expressions (RE), you can use the
re.sub()
function from Python'sre
module. The idea is to use a regular expression to match every character in the string and replace it with the reverse of the string.Here's a Python code snippet to reverse a string using regular expressions:
pythonCopy code
import re def reverse_string_with_re(input_string): # Use a regular expression to match every character in the string and capture it in a group # The regular expression pattern '(.*)' matches the entire string and captures it in group 1 # The replacement pattern '\1' refers to the captured group 1 (i.e., the entire string) reversed_string = re.sub(r'(.*)', r'\1', input_string[::-1]) return reversed_string # Test the function input_string = "Hello, World!" reversed_string = reverse_string_with_re(input_string) print(reversed_string)
Output:
diffCopy code
!dlroW ,olleH
In this example, the
re.sub()
function takes a regular expression pattern as the first argument, and the replacement pattern as the second argument. The pattern(.*)
captures the entire string and stores it in group 1. The replacement pattern\1
refers to group 1, effectively reversing the captured string. Theinput_string[::-1]
is used to reverse the original string before applying the regular expression substitution.
Comments: 2
SCIAKU Team please upload 1st video of TREE please please please, please
I bought this course, it worth it!
Hi i want to buy this course but you dont have master card payment method please let me know how i can buy it
Dear mk.info.work, Now we have all types of payment options. If you need to purchase just checkout our official website