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Python: Search a literals string in a string and also find the location where the pattern occurs

Python Regular Expression: Exercise-20 with Solution

Write a Python program to search a literals string in a string and also find the location within the original string where the pattern occurs.

Sample Solution:-

Python Code:

import re
pattern = 'fox'
text = 'The quick brown fox jumps over the lazy dog.'
match = re.search(pattern, text)
s = match.start()
e = match.end()
print('Found "%s" in "%s" from %d to %d ' % \
    (match.re.pattern, match.string, s, e))
	

Sample Output:

Found "fox" in "The quick brown fox jumps over the lazy dog." from 16 to 19 

Pictorial Presentation:

Python: Regular Expression - Search a literals string in a string and also find the location where the pattern occurs.

Flowchart:

Flowchart: Regular Expression - Search a literals string in a string and also find the location where the pattern occurs.

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Python: Tips of the Day

Merges two or more lists into a list of lists, combining elements from each of the input lists based on their positions

Example:

def tips_merge(*args, fill_value=None):
  max_length = max([len(lst) for lst in args])
  result = []
  for i in range(max_length):
    result.append([
      args[k][i] if i < len(args[k])
	  else fill_value for k in range(len(args))
    ])
  return result
print(tips_merge(['x', 'y'], [1, 2], [True, False])) 
print(tips_merge(['x'], [1, 2], [True, False])) 
print(tips_merge(['x'], [1, 2], [True, False], fill_value = '_')) 

Output:

[['x', 1, True], ['y', 2, False]]
[['x', 1, True], [None, 2, False]]
[['x', 1, True], ['_', 2, False]]