1 files changed, 41 insertions, 0 deletions
diff --git a/challenge-275/sgreen/python/ch-2.py b/challenge-275/sgreen/python/ch-2.py
new file mode 100755
index 0000000000..ec4fb291d8
--- /dev/null
+++ b/challenge-275/sgreen/python/ch-2.py
@@ -0,0 +1,41 @@
+#!/usr/bin/env python3
+
+import string
+import sys
+
+
+def replace_digits(s: str) -> str:
+    """
+    Replaces digits in a string with corresponding letters from the alphabet.
+
+    Args:
+        s (str): The input string.
+
+    Returns:
+        str: The modified string with digits replaced by letters.
+    """
+
+    current_letter = None
+    solution = ''
+    alphabet = string.ascii_lowercase
+
+    for char in s:
+        if char.isdigit():
+            if current_letter is None:
+                raise ValueError('The first number must follow a letter.')
+            solution += alphabet[(alphabet.index(current_letter) +
+                                  int(char)) % 26]
+        else:
+            solution += char
+            current_letter = char
+
+    return solution
+
+
+def main():
+    result = replace_digits(sys.argv[1])
+    print(result)
+
+
+if __name__ == '__main__':
+    main()