diff --git a/4/4.17/mad_lib.py b/4/4.17/mad_lib.py
new file mode 100644
index 0000000..228c743
--- /dev/null
+++ b/4/4.17/mad_lib.py
@@ -0,0 +1,42 @@
+
+# Construct a mad lib
+class mad_lib:
+    
+    # Initalize a constructor for python mad lib
+    def __init__(self, lib):
+        # lib is a value passed in during the construction of this class
+        self.text = lib
+        self.input = input().split()
+
+        # Replace %text% with user input
+        if '%first_name%' in self.text:
+            self.text = self.text.replace('%first_name%', self.first_name())
+        if '%location%' in self.text:
+            self.text = self.text.replace('%location%', self.location())
+        if '%whole_number%' in self.text:
+            self.text = self.text.replace('%whole_number%', self.whole_number())
+        if '%plural_noun%' in self.text:
+            self.text = self.text.replace('%plural_noun%', self.plural_noun())
+        
+    
+    def first_name(self):
+        #return input("A first name: ")
+        return self.input.pop()
+    
+    def location(self):
+        #return input("A location: ")
+        return self.input.pop()
+
+    def whole_number(self):
+        #return input("A whole number: ")
+        return self.input.pop()
+        
+    def plural_noun(self):
+        #return input("A plural noun: ")
+        return self.input.pop()
+
+if __name__ == '__main__':
+    # Construct a mad lib
+    md = mad_lib('%first_name% went to %location% to buy %whole_number% different types of %plural_noun%')
+
+    print(md.text)
diff --git a/4/4.17/main.py b/4/4.17/main.py
new file mode 100644
index 0000000..f5891a3
--- /dev/null
+++ b/4/4.17/main.py
@@ -0,0 +1,8 @@
+from mad_lib import mad_lib
+
+while True:
+    md = mad_lib('Eating %whole_number% %plural_noun% a day keeps the doctor away.')
+    if 'quit' in md.text:
+        break
+    else:
+        print(md.text)