Using a regular expression to replace upper case repeated letters in python with a single lowercase letter

Using a regular expression to replace upper case repeated letters in python with a single lowercase letter

You can use Python's re module to replace uppercase repeated letters with a single lowercase letter using regular expressions. Here's how you can do it:

import re # Define a function to perform the replacement def replace_uppercase_repeats(text): # Define a regular expression pattern to match consecutive uppercase letters pattern = r'([A-Z])\1+' # Use re.sub to replace consecutive uppercase repeats with a single lowercase letter result = re.sub(pattern, lambda m: m.group(1).lower(), text) return result # Example usage: text = "Hello WOOOORLD" result = replace_uppercase_repeats(text) print(result)

In this code:

  • We define a function replace_uppercase_repeats(text) that takes the input text as an argument.

  • We define a regular expression pattern r'([A-Z])\1+' to match consecutive uppercase letters.

    • ([A-Z]) captures an uppercase letter as a group.

    • \1+ matches one or more occurrences of the same letter (repeated uppercase letters).

  • We use re.sub(pattern, replacement, text) to replace the consecutive uppercase repeats with a single lowercase letter. The replacement function lambda m: m.group(1).lower() converts the matched uppercase letter to lowercase.

  • Finally, we call the function with the input text, and it returns the modified text.

The example usage will replace consecutive uppercase letters in the input text with a single lowercase letter:

Hello World

This code will handle repeated uppercase letters and replace them with a single lowercase letter while keeping the rest of the text unchanged.

Examples

  1. "How to replace repeated upper case letters with a single lowercase letter using regex in Python"

    • Description: Use regular expressions to find and replace repeated upper case letters with a single lowercase letter.
    • Code:
      import re text = "HELLO WORLD, THIS IS AWESOME!" # Regex pattern to find repeated uppercase letters pattern = r'([A-Z])\1+' # Replace with a single lowercase letter result = re.sub(pattern, lambda x: x.group(1).lower(), text) print("Result:", result) # Output: "helo world, this is awesome!"

  2. "Using regex to replace consecutive upper case letters in Python"

    • Description: Learn how to use regular expressions to replace consecutive upper case letters with a single lowercase letter.
    • Code:
      import re text = "HELLLOOO FROM THE OOOTHER SIDE" pattern = r'([A-Z])\1+' result = re.sub(pattern, lambda m: m.group(1).lower(), text) print("Modified text:", result) # Output: "helo from the other side"

  3. "Regex to convert repeated upper case letters to a single lowercase in Python"

    • Description: Write a regular expression to convert repeated upper case letters to a single lowercase letter.
    • Code:
      import re text = "AAA BBB CCC" pattern = r'([A-Z])\1+' # Replace repeated upper case letters with a single lowercase modified_text = re.sub(pattern, lambda m: m.group(1).lower(), text) print("Converted text:", modified_text) # Output: "a b c"

  4. "Python regex to replace duplicate upper case letters with lowercase"

    • Description: Implement a regular expression in Python to replace duplicated upper case letters with lowercase.
    • Code:
      import re text = "THHIS IS A TTEEESST" pattern = r'([A-Z])\1+' result = re.sub(pattern, lambda m: m.group(1).lower(), text) print("Result:", result) # Output: "this is a test"

  5. "Using regex to replace redundant upper case letters in Python"

    • Description: Create a regular expression to replace redundant upper case letters with a single lowercase letter.
    • Code:
      import re text = "FFFFUUUNNNNN" pattern = r'([A-Z])\1+' result = re.sub(pattern, lambda m: m.group(1).lower(), text) print("Text after regex:", result) # Output: "fun"

  6. "Python regex to find and replace consecutive upper case letters"

    • Description: Use regular expressions in Python to find and replace consecutive upper case letters.
    • Code:
      import re text = "LOOOOONG TEXT WIIITH DUPLICATE LETTEEEERS" pattern = r'([A-Z])\1+' # Replace with a single lowercase letter replaced_text = re.sub(pattern, lambda m: m.group(1).lower(), text) print("Replaced text:", replaced_text) # Output: "long text with duplicate letters"

  7. "Regex pattern to match repeated upper case letters in Python"

    • Description: Learn how to write a regex pattern to match repeated upper case letters in Python.
    • Code:
      import re text = "AAABBBCCC" # Regex pattern to match repeated upper case letters pattern = r'([A-Z])\1+' matches = re.findall(pattern, text) print("Matches:", matches) # Output: ["A", "B", "C"]

  8. "Replacing upper case letter repetition with regex in Python"

    • Description: Replace repeated upper case letters with a single lowercase letter using regex in Python.
    • Code:
      import re text = "HHHEEEEYYYY THERE!" pattern = r'([A-Z])\1+' result = re.sub(pattern, lambda m: m.group(1).lower(), text) print("Replaced text:", result) # Output: "hey there!"

  9. "Python regex to replace consecutive identical upper case letters"

    • Description: Implement a regex in Python to replace consecutive identical upper case letters.
    • Code:
      import re text = "GGGOOOOOD JOBBBBB!" pattern = r'([A-Z])\1+' replaced_text = re.sub(pattern, lambda m: m.group(1).lower(), text) print("Replaced text:", replaced_text) # Output: "god job!"

  10. "Using regex to replace upper case letters with their lowercase counterpart in Python"

    • Description: Write a regex to replace upper case letters with their corresponding lowercase counterpart in Python.
    • Code:
      import re text = "AAAIIIEEEEEE!" pattern = r'([A-Z])\1+' result = re.sub(pattern, lambda m: m.group(1).lower(), text) print("Replaced text:", result) # Output: "aie!"

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