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Python: Matches a string that has an a followed by three 'b'

Python Regular Expression: Exercise-5 with Solution

Write a Python program that matches a string that has an a followed by three 'b'.

Sample Solution:-

Python Code:

import re
def text_match(text):
        patterns = 'ab{3}?'
        if re.search(patterns,  text):
                return 'Found a match!'
        else:
                return('Not matched!')

print(text_match("abbb"))
print(text_match("aabbbbbc"))

Sample Output:

Found a match!                                                                                                
Found a match!

Pictorial Presentation:

Python: Regular Expression - Matches a string that has an <em>a</em> followed by three 'b'.
Python: Regular Expression - Matches a string that has an <em>a</em> followed by three 'b'.

Flowchart:

Flowchart: Regular Expression - Matches a string that has an <em>a</em> followed by three 'b'.

Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:

Python Code Editor:

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Previous: Write a Python program that matches a string that has an a followed by zero or one 'b'.
Next: Write a Python program that matches a string that has an a followed by two to three 'b'.

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Python: Tips of the Day

Creates a dictionary with the same keys as the provided dictionary and values generated by running the provided function for each value

Example:

def tips_map_values(obj, fn):
  ret = {}
  for key in obj.keys():
    ret[key] = fn(obj[key])
  return ret
users = {
  'Owen': { 'user': 'Owen', 'age': 29 },
  'Eddie': { 'user': 'Eddie', 'age': 15 }
}

print(tips_map_values(users, lambda u : u['age'])) # {'Owen': 29, 'Eddie': 15}

Output:

{'Owen': 29, 'Eddie': 15}