diff --git a/sami/learn-python-the-hard-way/ex15_sample.txt b/sami/learn-python-the-hard-way/ex15_sample.txt
new file mode 100644
index 0000000..ff0a270
--- /dev/null
+++ b/sami/learn-python-the-hard-way/ex15_sample.txt
@@ -0,0 +1,3 @@
+This  is stuff I typed into a file.
+It is really cool stuff.
+Lots and lots of fun to have in here.
diff --git a/sami/learn-python-the-hard-way/ex18.py b/sami/learn-python-the-hard-way/ex18.py
index b9617a4..222a91e 100644
--- a/sami/learn-python-the-hard-way/ex18.py
+++ b/sami/learn-python-the-hard-way/ex18.py
@@ -1,22 +1,20 @@
 # this one is like your scripts with argv
 def print_two(*args):
-arg1, arg2 = args
-print(f"arg1: {arg1}, arg2: {arg2}")
+    arg1, arg2 = args
+    print(f"arg1: {arg1}, arg2: {arg2}")
 
 # ok, that *args is actually pointless, we can just do this
 def print_two_again(arg1, arg2):
-
-print(f"arg1: {arg1}, arg2: {arg2}")
+    print(f"arg1: {arg1}, arg2: {arg2}")
 
 # this just takes one argument
 def print_one(arg1):
-
-print(f"arg1: {arg1}")
+    print(f"arg1: {arg1}")
 
 # this one takes no arguments
 def print_none():
+    print("I got nothin'.")
 
-print("I got nothin'.")
 
 
 print_two("Zed","Shaw")
diff --git a/sami/learn-python-the-hard-way/ex19.py b/sami/learn-python-the-hard-way/ex19.py
index a8f60d6..dd121ae 100644
--- a/sami/learn-python-the-hard-way/ex19.py
+++ b/sami/learn-python-the-hard-way/ex19.py
@@ -1,8 +1,8 @@
 def cheese_and_crackers(cheese_count, boxes_of_crackers):
-print(f"You have {cheese_count} cheeses!")
-print(f"You have {boxes_of_crackers} boxes of crackers!")
-print("Man that's enough for a party!")
-print("Get a blanket.\n")
+    print(f"You have {cheese_count} cheeses!")
+    print(f"You have {boxes_of_crackers} boxes of crackers!")
+    print("Man that's enough for a party!")
+    print("Get a blanket.\n")
 
 
 print("We can just give the function numbers directly:")
diff --git a/sami/learn-python-the-hard-way/ex20.py b/sami/learn-python-the-hard-way/ex20.py
index 2e02b87..91ae9dc 100644
--- a/sami/learn-python-the-hard-way/ex20.py
+++ b/sami/learn-python-the-hard-way/ex20.py
@@ -6,17 +6,17 @@ script, input_file = argv
 
 
 def print_all(f):
-print(f.read())
+    print(f.read())
 
 
 
 def rewind(f):
-f.seek(0)
+    f.seek(0)
 
 
 
 def print_a_line(line_count, f):
-print(line_count, f.readline())
+    print(line_count, f.readline())
 
 
 current_file = open(input_file)
diff --git a/sami/learn-python-the-hard-way/ex21.py b/sami/learn-python-the-hard-way/ex21.py
index fffb76a..9187f72 100644
--- a/sami/learn-python-the-hard-way/ex21.py
+++ b/sami/learn-python-the-hard-way/ex21.py
@@ -1,21 +1,21 @@
 def add(a, b):
-print(f"ADDING {a} + {b}")
-return a + b
+    print(f"ADDING {a} + {b}")
+    return a + b
 
 
 def subtract(a, b):
-print(f"SUBTRACTING {a} - {b}")
-return a - b
+    print(f"SUBTRACTING {a} - {b}")
+    return a - b
 
 
 def multiply(a, b):
-print(f"MULTIPLYING {a} * {b}")
-return a * b
+    print(f"MULTIPLYING {a} * {b}")
+    return a * b
 
 
 def divide(a, b):
-print(f"DIVIDING {a} / {b}")
-return a / b
+    print(f"DIVIDING {a} / {b}")
+    return a / b
 
 
 print("Let's do some math with just functions!")
diff --git a/sami/learn-python-the-hard-way/ex25.py b/sami/learn-python-the-hard-way/ex25.py
new file mode 100644
index 0000000..3c5f122
--- /dev/null
+++ b/sami/learn-python-the-hard-way/ex25.py
@@ -0,0 +1,36 @@
+
+def break_words(stuff):
+    """This function will break up words for us."""
+    words = stuff.split(' ')
+    return words
+
+
+def sort_words(words):
+    """Sorts the words."""
+    return sorted(words)
+
+
+def print_first_word(words):
+    """Prints the first word after popping it off."""
+    word = words.pop(0)
+    print(word)
+
+
+def print_last_word(words):
+    """Prints the last word after popping it off."""
+    word = words.pop(-1)
+    print(word)
+
+
+def sort_sentence(sentence):
+    """Takes in a full sentence and returns the sorted words."""
+    words = break_words(sentence)
+    return sort_words(words)
+
+
+def print_first_and_last(sentence):
+    """Prints the first and last words of the sentence."""
+    words = break_words(sentence)
+    print_first_word(words)
+    print_last_word(words)
+