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What is the approach to make my Python code search within the string?

asked 2022-11-04 11:00:00 +0000

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answered 2021-11-20 03:00:00 +0000

huitzilopochtli gravatar image

There are different approaches you can take to make your Python code search within a string:

  1. Using the "in" keyword: This is a quick and simple approach to check if a substring is present in a string. Here's an example:
string = "This is a sample string"
substring = "sample"

if substring in string:
  print("Substring found.")
else:
  print("Substring not found.")

Output: Substring found.

  1. Using the find() method: The find() method returns the lowest index of the substring if it is found in the string, and -1 if it is not found. Here's an example:
string = "This is a sample string"
substring = "sample"

index = string.find(substring)

if index != -1:
  print("Substring found at index ", index)
else:
  print("Substring not found.")

Output: Substring found at index 10

  1. Using regular expressions: Python's re module provides a powerful way to search for patterns within strings using regular expressions. Here's an example:
import re

string = "This is a sample string"
pattern = r'sample'

matches = re.findall(pattern, string)

if matches:
  print("Substring found ", matches)
else:
  print("Substring not found.")

Output: Substring found ['sample']

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Asked: 2022-11-04 11:00:00 +0000

Seen: 10 times

Last updated: Nov 20 '21