Add median function documentation

src/dumbpy/median.py

@@ -0,0 +1,35 @@
+"""
+A module that calculates the median of a list of numbers.
+"""
+
+
+def median(input):
+    """
+    Calculate the median of the inputted list and return the result.
+
+    Parameters
+    ----------
+    input : list
+        A non-empty list of numbers.
+
+    Returns
+    -------
+    float
+        The median value of the list. If the list length is even, the median is
+        the average of the two middle values.
+
+    Raises
+    ------
+    TypeError
+        If x is not a list or contains non-numeric values.
+    ValueError
+        If x is an empty list.
+
+    Examples
+    --------
+    >>> median([3, 1, 2])
+    2
+    >>> median([1, 2, 3, 4])
+    2.5
+    """
+    pass