Added ascii_to_char function with docstring and tests

conversions/ascii_to_char.py

@@ -0,0 +1,49 @@
+"""
+Convert an ASCII integer (0-255) to its corresponding character.
+
+Example:
+    >>> ascii_to_char(65)
+    'A'
+    >>> ascii_to_char(97)
+    'a'
+    >>> ascii_to_char(36)
+    '$'
+    >>> ascii_to_char(300)
+    Traceback (most recent call last):
+        ...
+    ValueError: ASCII value must be in the range 0-255.
+
+Reference:
+    https://en.wikipedia.org/wiki/ASCII
+"""
+
+
+def ascii_to_char(ascii_value: int) -> str:
+    """
+    Convert an ASCII integer (0-255) into its corresponding character.
+
+    Args:
+        ascii_value (int): Integer representing an ASCII code (0-255).
+
+    Returns:
+        str: The corresponding character.
+
+    Raises:
+        ValueError: If the input is not within 0-255 inclusive.
+
+    >>> ascii_to_char(65)
+    'A'
+    >>> ascii_to_char(97)
+    'a'
+    >>> ascii_to_char(36)
+    '$'
+    >>> 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 value must be in the range 0-255.")
+    return chr(ascii_value)

conversions/char_to_ascii.py

@@ -0,0 +1,49 @@
+"""
+Convert a single character to its ASCII integer value.
+
+Example:
+    >>> char_to_ascii('A')
+    65
+    >>> char_to_ascii('a')
+    97
+    >>> char_to_ascii('$')
+    36
+    >>> char_to_ascii('AB')
+    Traceback (most recent call last):
+        ...
+    ValueError: Input must be a single character
+
+References:
+    https://en.wikipedia.org/wiki/ASCII
+"""
+
+
+def char_to_ascii(char: str) -> int:
+    """
+    Convert a single character to its ASCII integer value.
+
+    Args:
+        char (str): A single character string.
+
+    Returns:
+        int: ASCII integer value corresponding to the character.
+
+    Raises:
+        ValueError: If input is not a single character.
+
+    >>> char_to_ascii('A')
+    65
+    >>> char_to_ascii('a')
+    97
+    >>> char_to_ascii('$')
+    36
+    >>> char_to_ascii('')
+    Traceback (most recent call last):
+        ...
+    ValueError: Input must be a single character
+    """
+    if not isinstance(char, str):
+        raise TypeError("Input must be a string.")
+    if len(char) != 1:
+        raise ValueError("Input must be a single character")
+    return ord(char)