Added ascii_to_char function with docstring and tests

Contributing for Hacktoberfest

Author: msnikash

conversions/ascii_to_char.py

@@ -0,0 +1,47 @@
+"""
+Convert an ASCII integer to its corresponding character.
+
+Example:
+    >>> ascii_to_char(65)
+    'A'
+    >>> ascii_to_char(97)
+    'a'
+    >>> ascii_to_char(36)
+    '$'
+    >>> ascii_to_char(256)
+    Traceback (most recent call last):
+        ...
+    ValueError: ASCII code must be between 0 and 255
+
+References:
+    https://en.wikipedia.org/wiki/ASCII
+"""
+
+def ascii_to_char(ascii_value: int) -> str:
+    """
+    Convert an ASCII integer (0-255) into its corresponding character.
+
+    Args:
+        ascii_value (int): Integer representing an ASCII code (0-255).
+
+    Returns:
+        str: The corresponding character for the ASCII value.
+
+    Raises:
+        ValueError: If the input is not within 0-255 inclusive.
+
+    >>> ascii_to_char(65)
+    'A'
+    >>> ascii_to_char(128)
+    '\x80'
+    >>> ascii_to_char(300)
+    Traceback (most recent call last):
+        ...
+    ValueError: ASCII value must be in the range 0-255.
+    """
+
+    if not isinstance(ascii_value, int):
+        raise TypeError("Input must be an integer.")
+    if not (0 <= ascii_value <= 255):
+        raise ValueError("ASCII code must be between 0 and 255")
+    return chr(ascii_value)