diff --git a/swap_meet/clothing.py b/swap_meet/clothing.py
index b8afdeb1e..fc37b9da3 100644
--- a/swap_meet/clothing.py
+++ b/swap_meet/clothing.py
@@ -1,2 +1,8 @@
-class Clothing:
-    pass
\ No newline at end of file
+from swap_meet.item import Item
+
+class Clothing(Item):
+    def __init__(self, category = "Clothing", condition = 0.0):
+        #is there a way to NOT have condition here??I don't think so. 
+        super().__init__(category, condition)
+    def __str__(self):
+        return "The finest clothing you could wear."
\ No newline at end of file
diff --git a/swap_meet/decor.py b/swap_meet/decor.py
index eab7a9dbe..47921351f 100644
--- a/swap_meet/decor.py
+++ b/swap_meet/decor.py
@@ -1,2 +1,8 @@
-class Decor:
-    pass
\ No newline at end of file
+from swap_meet.item import Item
+
+class Decor(Item):
+    def __init__(self, category = "Decor", condition = 0.0):
+        super().__init__(category, condition)
+
+    def __str__(self):
+        return "Something to decorate your space."
\ No newline at end of file
diff --git a/swap_meet/electronics.py b/swap_meet/electronics.py
index 2f9dff68a..05cf55dee 100644
--- a/swap_meet/electronics.py
+++ b/swap_meet/electronics.py
@@ -1,2 +1,7 @@
-class Electronics:
-    pass
+from swap_meet.item import Item
+
+class Electronics(Item):
+    def __init__(self, category = "Electronics", condition = 0.0):
+        super().__init__(category, condition)
+    def __str__(self):
+        return "A gadget full of buttons and secrets."
diff --git a/swap_meet/item.py b/swap_meet/item.py
index 560d759c2..e923e4c35 100644
--- a/swap_meet/item.py
+++ b/swap_meet/item.py
@@ -1,2 +1,17 @@
 class Item:
-    pass
\ No newline at end of file
+    def __init__(self, category = "", condition = 0.0):
+        self.category = category
+        self.condition = condition
+    def __str__(self):
+        return "Hello World!"
+    def condition_description(self):
+        if self.condition <= 1:
+            return "OMG Don't swap for this!"
+        elif self.condition <= 2:
+            return "This item is well-loved"
+        elif self.condition <= 3:
+            return "This is average qualtiy"
+        elif self.condition <= 4:
+            return "This is in pretty good condition"
+        else:
+            return "Love this.  Great condition."
\ No newline at end of file
diff --git a/swap_meet/vendor.py b/swap_meet/vendor.py
index 87302c056..2dd8a2e7e 100644
--- a/swap_meet/vendor.py
+++ b/swap_meet/vendor.py
@@ -1,2 +1,89 @@
 class Vendor:
-    pass
\ No newline at end of file
+    """The Vendor class has optional arguement inventory,
+    methods: .add(item), .remove(item), .get_by_category(category),
+    swap_items(swapping_vendor, my_item, their_item)"""
+    def __init__(self, inventory = None):
+        #if an inventory list is given, assign it to the attribute
+        if inventory:
+            self.inventory = inventory
+        #if no inventory list is given, initialize an empty list for inventory.
+        else:
+            self.inventory = []
+
+    def add(self, item):
+        """appends the item to the inventory list and returns the item"""
+        self.inventory.append(item)
+        return item
+
+    def remove(self, item):
+        """removes an item from the inventory list"""
+        #if item is in inventory, remove it
+        if item in self.inventory:
+            self.inventory.remove(item)
+            return item
+        else:
+            return False
+
+    def get_by_category(self, category):
+        """given a category, return a list of all items in inventory
+        that have that as their attribute category."""
+        # items_in_category = []
+        # #iterate through inventory to append items with the given category
+        # for item in self.inventory:
+        #     if item.category == category:
+        #         items_in_category.append(item)
+
+        items_in_category = [item for item in self.inventory if item.category == category]
+
+        return items_in_category
+
+    def swap_items(self, swapping_vendor, my_item, their_item):
+        """given another vendor, my_item to swap, their_item to receive, make that swap."""
+        #if each item is in the right place, make the swap:
+        if my_item in self.inventory and their_item in swapping_vendor.inventory:
+            #make the swap
+            self.remove(my_item)
+            self.add(their_item)
+            swapping_vendor.add(my_item)
+            swapping_vendor.remove(their_item)
+            
+            return True
+        else:
+            return False
+
+    def swap_first_item(self, swapping_vendor):
+        """given another vendor, swap the first item
+        in each of your inventories."""
+        if self.inventory and swapping_vendor.inventory:
+            #call swap_items, inputing the first item on each of your inventories:
+            result = self.swap_items(swapping_vendor, self.inventory[0], swapping_vendor.inventory[0])
+            return result
+        else:
+            return False
+
+    def get_best_by_category(self, category):
+        """this will return the best item a vendor has in a given category"""
+        #In the case of a tie, it will return the LAST instance of this item.
+        best_item = None
+        items_in_category = self.get_by_category(category)
+    
+        if items_in_category:
+            best_item = items_in_category[0]
+            for cat_item in items_in_category:
+                if cat_item.condition >= best_item.condition:
+                    best_item = cat_item
+        return best_item
+    
+    def swap_best_by_category(self, other, my_priority, their_priority):
+        """This will swap two items: self will give their item
+        of highest quality from the category their_priority.
+        In return, the swapping_vendor will give their best item from 
+        the category my_priority."""
+        #figure out what items will be swapped.
+        my_item_to_swap = self.get_best_by_category(their_priority)
+        their_item_to_swap = other.get_best_by_category(my_priority)
+        result = self.swap_items(other, my_item_to_swap, their_item_to_swap)
+        return result
+
+
+
diff --git a/tests/integration_tests/test_wave_01_02_03.py b/tests/integration_tests/test_wave_01_02_03.py
index 9912414da..715275460 100644
--- a/tests/integration_tests/test_wave_01_02_03.py
+++ b/tests/integration_tests/test_wave_01_02_03.py
@@ -2,7 +2,7 @@
 from swap_meet.vendor import Vendor
 from swap_meet.item import Item
 
-@pytest.mark.skip
+#@pytest.mark.skip
 @pytest.mark.integration_test
 def test_integration_wave_01_02_03():
     # make a vendor  
diff --git a/tests/integration_tests/test_wave_04_05_06.py b/tests/integration_tests/test_wave_04_05_06.py
index 4d0be9909..25f268c85 100644
--- a/tests/integration_tests/test_wave_04_05_06.py
+++ b/tests/integration_tests/test_wave_04_05_06.py
@@ -4,7 +4,7 @@
 from swap_meet.decor import Decor
 from swap_meet.electronics import Electronics
 
-@pytest.mark.skip
+#@pytest.mark.skip
 @pytest.mark.integration_test
 def test_integration_wave_04_05_06():
     camila = Vendor()
diff --git a/tests/unit_tests/test_wave_01.py b/tests/unit_tests/test_wave_01.py
index 58478ccf9..a02a99754 100644
--- a/tests/unit_tests/test_wave_01.py
+++ b/tests/unit_tests/test_wave_01.py
@@ -2,12 +2,12 @@
 import pytest
 from swap_meet.vendor import Vendor
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_vendor_has_inventory():
     vendor = Vendor()
     assert len(vendor.inventory) == 0
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_vendor_takes_optional_inventory():
     inventory = ["a", "b", "c"]
     vendor = Vendor(inventory=inventory)
@@ -16,7 +16,7 @@ def test_vendor_takes_optional_inventory():
     assert "b" in vendor.inventory
     assert "c" in vendor.inventory
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_adding_to_inventory():
     vendor = Vendor()
     item = "new item"
@@ -27,7 +27,7 @@ def test_adding_to_inventory():
     assert item in vendor.inventory
     assert result == item
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_removing_from_inventory_returns_item():
     item = "item to remove"
     vendor = Vendor(
@@ -40,7 +40,7 @@ def test_removing_from_inventory_returns_item():
     assert item not in vendor.inventory
     assert result == item
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_removing_not_found_is_false():
     item = "item to remove"
     vendor = Vendor(
@@ -48,8 +48,5 @@ def test_removing_not_found_is_false():
     )
 
     result = vendor.remove(item)
-
-    raise Exception("Complete this test according to comments below.")
-    # *********************************************************************
-    # ****** Complete Assert Portion of this test **********
-    # *********************************************************************
+    #assert:
+    result == False
diff --git a/tests/unit_tests/test_wave_02.py b/tests/unit_tests/test_wave_02.py
index 3d7060d7c..48891c339 100644
--- a/tests/unit_tests/test_wave_02.py
+++ b/tests/unit_tests/test_wave_02.py
@@ -2,12 +2,12 @@
 from swap_meet.vendor import Vendor
 from swap_meet.item import Item
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_items_have_blank_default_category():
     item = Item()
     assert item.category == ""
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_get_items_by_category():
     item_a = Item(category="clothing")
     item_b = Item(category="electronics")
@@ -23,7 +23,7 @@ def test_get_items_by_category():
     assert item_c in items
     assert item_b not in items
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_get_no_matching_items_by_category():
     item_a = Item(category="clothing")
     item_b = Item(category="clothing")
@@ -34,7 +34,7 @@ def test_get_no_matching_items_by_category():
 
     items = vendor.get_by_category("electronics")
 
-    raise Exception("Complete this test according to comments below.")
-    # *********************************************************************
-    # ****** Complete Assert Portion of this test **********
-    # *********************************************************************
+    assert len(items) == 0
+    assert item_a not in items
+    assert item_b not in items
+    assert item_c not in items
diff --git a/tests/unit_tests/test_wave_03.py b/tests/unit_tests/test_wave_03.py
index 0300b638f..720879a7c 100644
--- a/tests/unit_tests/test_wave_03.py
+++ b/tests/unit_tests/test_wave_03.py
@@ -2,7 +2,7 @@
 from swap_meet.vendor import Vendor
 from swap_meet.item import Item
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_item_overrides_to_string():
     item = Item()
 
@@ -10,7 +10,7 @@ def test_item_overrides_to_string():
 
     assert stringified_item == "Hello World!"
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_swap_items_returns_true():
     item_a = Item(category="clothing")
     item_b = Item(category="clothing")
@@ -38,7 +38,7 @@ def test_swap_items_returns_true():
     assert item_b in jolie.inventory
     assert result
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_swap_items_when_my_item_is_missing_returns_false():
     item_a = Item(category="clothing")
     item_b = Item(category="clothing")
@@ -65,7 +65,7 @@ def test_swap_items_when_my_item_is_missing_returns_false():
     assert item_e in jolie.inventory
     assert not result
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_swap_items_when_their_item_is_missing_returns_false():
     item_a = Item(category="clothing")
     item_b = Item(category="clothing")
@@ -92,7 +92,7 @@ def test_swap_items_when_their_item_is_missing_returns_false():
     assert item_e in jolie.inventory
     assert not result
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_swap_items_from_my_empty_returns_false():
     fatimah = Vendor(
         inventory=[]
@@ -112,7 +112,7 @@ def test_swap_items_from_my_empty_returns_false():
     assert len(jolie.inventory) == 2
     assert not result
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_swap_items_from_their_empty_returns_false():
     item_a = Item(category="clothing")
     item_b = Item(category="clothing")
diff --git a/tests/unit_tests/test_wave_04.py b/tests/unit_tests/test_wave_04.py
index 8190a4ebb..f3c91e846 100644
--- a/tests/unit_tests/test_wave_04.py
+++ b/tests/unit_tests/test_wave_04.py
@@ -2,7 +2,7 @@
 from swap_meet.vendor import Vendor
 from swap_meet.item import Item
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_swap_first_item_returns_true():
     item_a = Item(category="clothing")
     item_b = Item(category="clothing")
@@ -30,7 +30,7 @@ def test_swap_first_item_returns_true():
     assert item_a in jolie.inventory
     assert result
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_swap_first_item_from_my_empty_returns_false():
     fatimah = Vendor(
         inventory=[]
@@ -48,7 +48,7 @@ def test_swap_first_item_from_my_empty_returns_false():
     assert len(jolie.inventory) == 2
     assert not result
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_swap_first_item_from_their_empty_returns_false():
     item_a = Item(category="clothing")
     item_b = Item(category="clothing")
diff --git a/tests/unit_tests/test_wave_05.py b/tests/unit_tests/test_wave_05.py
index 7abea06cd..8dedc9e28 100644
--- a/tests/unit_tests/test_wave_05.py
+++ b/tests/unit_tests/test_wave_05.py
@@ -3,25 +3,25 @@
 from swap_meet.decor import Decor
 from swap_meet.electronics import Electronics
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_clothing_has_default_category_and_to_str():
     cloth = Clothing()
     assert cloth.category == "Clothing"
     assert str(cloth) == "The finest clothing you could wear."
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_decor_has_default_category_and_to_str():
     decor = Decor()
     assert decor.category == "Decor"
     assert str(decor) == "Something to decorate your space."
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_electronics_has_default_category_and_to_str():
     electronics = Electronics()
     assert electronics.category == "Electronics"
     assert str(electronics) == "A gadget full of buttons and secrets."
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_items_have_condition_as_float():
     items = [
         Clothing(condition=3.5),
@@ -31,7 +31,7 @@ def test_items_have_condition_as_float():
     for item in items:
         assert item.condition == pytest.approx(3.5)
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_items_have_condition_descriptions_that_are_the_same_regardless_of_type():
     items = [
         Clothing(condition=5),
diff --git a/tests/unit_tests/test_wave_06.py b/tests/unit_tests/test_wave_06.py
index 1f7065ab4..aec847eb6 100644
--- a/tests/unit_tests/test_wave_06.py
+++ b/tests/unit_tests/test_wave_06.py
@@ -4,7 +4,7 @@
 from swap_meet.decor import Decor
 from swap_meet.electronics import Electronics
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_best_by_category():
     item_a = Clothing(condition=2.0)
     item_b = Decor(condition=2.0)
@@ -20,7 +20,7 @@ def test_best_by_category():
     assert best_item.category == "Clothing"
     assert best_item.condition == pytest.approx(4.0)
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_best_by_category_no_matches_is_none():
     item_a = Decor(condition=2.0)
     item_b = Decor(condition=2.0)
@@ -33,7 +33,7 @@ def test_best_by_category_no_matches_is_none():
 
     assert best_item is None
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_best_by_category_with_duplicates():
     # Arrange
     item_a = Clothing(condition=2.0)
@@ -50,7 +50,7 @@ def test_best_by_category_with_duplicates():
     assert best_item.category == "Clothing"
     assert best_item.condition == pytest.approx(4.0)
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_swap_best_by_category():
     # Arrange
     # me
@@ -76,16 +76,20 @@ def test_swap_best_by_category():
         their_priority="Decor"
     )
 
-    raise Exception("Complete this test according to comments below.")
-    # *********************************************************************
-    # ****** Complete Assert Portion of this test **********
-    # *********************************************************************
-    # Assertions should check:
-    # - That the results is truthy
-    # - That tai and jesse's inventories are the correct length
-    # - That all the correct items are in tai and jesse's inventories, including the items which were swapped from one vendor to the other
+    #assert
+    assert result
+    assert len(tai.inventory) == 3
+    assert len(jesse.inventory) == 3
+    
+    assert item_f in tai.inventory
+    assert item_a in tai.inventory
+    assert item_b in tai.inventory
 
-@pytest.mark.skip
+    assert item_c in jesse.inventory
+    assert item_d in jesse.inventory
+    assert item_e in jesse.inventory
+    
+#@pytest.mark.skip
 def test_swap_best_by_category_reordered():
     # Arrange
     item_a = Decor(condition=2.0)
@@ -109,16 +113,22 @@ def test_swap_best_by_category_reordered():
         their_priority="Decor"
     )
 
-    raise Exception("Complete this test according to comments below.")
-    # *********************************************************************
-    # ****** Complete Assert Portion of this test **********
-    # *********************************************************************
-    # Assertions should check:
-    # - That result is truthy
-    # - That tai and jesse's inventories are the correct length
-    # - That all the correct items are in tai and jesse's inventories, and that the items that were swapped are not there
+    #assert
+    assert result
+    assert len(tai.inventory) == 3
+    assert len(jesse.inventory) == 3
+    
+    assert item_f in tai.inventory
+    assert item_a in tai.inventory
+    assert item_b in tai.inventory
+    assert item_c not in tai.inventory
 
-@pytest.mark.skip
+    assert item_c in jesse.inventory
+    assert item_d in jesse.inventory
+    assert item_e in jesse.inventory
+    assert item_f not in jesse.inventory
+    
+#@pytest.mark.skip
 def test_swap_best_by_category_no_inventory_is_false():
     tai = Vendor(
         inventory=[]
@@ -144,7 +154,7 @@ def test_swap_best_by_category_no_inventory_is_false():
     assert item_b in jesse.inventory
     assert item_c in jesse.inventory
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_swap_best_by_category_no_other_inventory_is_false():
     item_a = Clothing(condition=2.0)
     item_b = Decor(condition=4.0)
@@ -170,7 +180,7 @@ def test_swap_best_by_category_no_other_inventory_is_false():
     assert item_b in tai.inventory
     assert item_c in tai.inventory
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_swap_best_by_category_no_match_is_false():
     # Arrange
     item_a = Decor(condition=2.0)
@@ -194,16 +204,17 @@ def test_swap_best_by_category_no_match_is_false():
         their_priority="Clothing"
     )
 
-    raise Exception("Complete this test according to comments below.")
-    # *********************************************************************
-    # ****** Complete Assert Portion of this test **********
-    # *********************************************************************
-    # Assertions should check:
-    # - That result is falsy
-    # - That tai and jesse's inventories are the correct length
-    # - That all the correct items are in tai and jesse's inventories
+    assert not result
+    assert len(tai.inventory) == 3
+    assert len(jesse.inventory) == 3
+    assert item_a in tai.inventory
+    assert item_b in tai.inventory
+    assert item_c in tai.inventory
+    assert item_d in jesse.inventory
+    assert item_e in jesse.inventory
+    assert item_f in jesse.inventory
 
-@pytest.mark.skip
+#@pytest.mark.skip
 def test_swap_best_by_category_no_other_match_is_false():
     # Arrange
     item_a = Decor(condition=2.0)
@@ -227,11 +238,12 @@ def test_swap_best_by_category_no_other_match_is_false():
         their_priority="Decor"
     )
 
-    raise Exception("Complete this test according to comments below.")
-    # *********************************************************************
-    # ****** Complete Assert Portion of this test **********
-    # *********************************************************************
-    # Assertions should check:
-    # - That result is falsy
-    # - That tai and jesse's inventories are the correct length
-    # - That all the correct items are in tai and jesse's inventories
+    assert not result
+    assert len(tai.inventory) == 3
+    assert len(jesse.inventory) == 3
+    assert item_a in tai.inventory
+    assert item_b in tai.inventory
+    assert item_c in tai.inventory
+    assert item_d in jesse.inventory
+    assert item_e in jesse.inventory
+    assert item_f in jesse.inventory
\ No newline at end of file