update documentation

Author: miguelHx

Python/chapter01/1.1 - Is Unique/miguel_1.1_sol.py

@@ -7,26 +7,39 @@
 I assume that the user will input a non-empty string
 If the string is empty, then raise a ValueError exception
 If the input is NOT a string, then raise a TypeError exception
-
-Given:		Expect:
-tacos		true
-swag		true
-bobby		false
-california	false
-orbit		true
-e		    true
 """
 import unittest
 
 
 def check_is_unique_input(input_str):
+    """
+    Does some input checking for the is_unique function and its variants
+    Raises exceptions if input_str is empty or if input_str is not of type string
+    :param input_str: a string that we are checking to make
+    :return:
+    """
     if not isinstance(input_str, str):
         raise TypeError("expected string as input")
     if input_str == "":
         raise ValueError("empty input string")
 
 
 def is_unique(input_str):
+    """
+    Determines if input_str has all unique characters.
+    input string MUST have at least 1 character. n>=1, where n is the number of characters in a string.
+    Hence, the domain is now defined. Any input not within the domain will not be considered. (n < 1)
+    An exception will be raised to handle faulty input.
+    Given:		Expect:
+    tacos		True
+    swag		True
+    bobby		False
+    california	False
+    orbit       True
+    e       true
+    :param input_str: the string we want to check characters of
+    :return: returns True if input_str has all unique characters, False otherwise
+    """
     check_is_unique_input(input_str)
     chars_seen = set()
     for c in input_str:
@@ -37,6 +50,18 @@ def is_unique(input_str):
 
 
 def is_unique_no_additional_data_structures(input_str):
+    """
+    Variant of is_unique.  Uses no additional data structures (besides the variables from the iterator)
+    Given:		Expect:
+    tacos		True
+    swag		True
+    bobby		False
+    california	False
+    orbit       True
+    e       True
+    :param input_str: the string we want to check characters of
+    :return: returns True if input_str has all unique characters, False otherwise
+    """
     check_is_unique_input(input_str)
     for i, c in enumerate(input_str):
         if c in input_str[i+1:]: