diff --git a/7/datas.py b/7/datas.py
new file mode 100644
index 0000000000000000000000000000000000000000..ee5da1936b05207fd41a39926fb484a41b22f45c
--- /dev/null
+++ b/7/datas.py
@@ -0,0 +1,152 @@
+datas = [
+    # 模拟吕梁的第一类房子
+    {
+        "city": "吕梁",
+        "area": 100,
+        "rooms": 2,
+        "school": 1,
+        "style": 1,
+        "price": 8000
+    },
+    {
+        "city": "吕梁",
+        "area": 100,
+        "rooms": 2,
+        "school": 1,
+        "style": 1,
+        "price": 7800
+    },
+    {
+        "city": "吕梁",
+        "area": 100,
+        "rooms": 2,
+        "school": 1,
+        "style": 1,
+        "price": 8200
+    },
+    # 模拟吕梁的第二类房子
+    {
+        "city": "吕梁",
+        "area": 130,
+        "rooms": 3,
+        "school": 1,
+        "style": 1,
+        "price": 8300
+    },
+    {
+        "city": "吕梁",
+        "area": 135,
+        "rooms": 3,
+        "school": 1,
+        "style": 1,
+        "price": 8450
+    },
+    {
+        "city": "吕梁",
+        "area": 140,
+        "rooms": 3,
+        "school": 1,
+        "style": 1,
+        "price": 8600
+    },
+    # 模拟吕梁的第三类房子
+    {
+        "city": "吕梁",
+        "area": 130,
+        "rooms": 3,
+        "school": 2,
+        "style": 2,
+        "price": 7000
+    },
+    {
+        "city": "吕梁",
+        "area": 135,
+        "rooms": 3,
+        "school": 2,
+        "style": 2,
+        "price": 6500
+    },
+    {
+        "city": "吕梁",
+        "area": 140,
+        "rooms": 3,
+        "school": 2,
+        "style": 2,
+        "price": 6200
+    },
+    # 模拟太原的第一类房子
+    {
+        "city": "太原",
+        "area": 100,
+        "rooms": 2,
+        "school": 1,
+        "style": 1,
+        "price": 10100
+    },
+    {
+        "city": "太原",
+        "area": 100,
+        "rooms": 2,
+        "school": 1,
+        "style": 1,
+        "price": 10300
+    },
+    {
+        "city": "太原",
+        "area": 100,
+        "rooms": 2,
+        "school": 1,
+        "style": 1,
+        "price": 10500
+    },
+    # 模拟太原的第二类房子
+    {
+        "city": "太原",
+        "area": 135,
+        "rooms": 3,
+        "school": 1,
+        "style": 1,
+        "price": 12120
+    },
+    {
+        "city": "太原",
+        "area": 135,
+        "rooms": 3,
+        "school": 1,
+        "style": 1,
+        "price": 12300
+    },
+    {
+ "city": "太原",
+    "area": 140,
+    "rooms": 3,
+    "school": 1,
+    "style": 1,
+    "price": 12600
+},
+# 模拟太原的第三类房子
+{
+    "city":"太原",
+    "area":130,
+    "rooms":3,
+    "school":2,
+    "style":2,
+    "price":8000
+},
+{
+    "city": "太原",
+    "area": 135,
+    "rooms": 3,
+    "school": 2,
+    "style": 2,
+    "price": 8300
+},
+{
+    "city": "太原",
+    "area": 140,
+    "rooms": 3,
+    "school": 2,
+    "style": 2,
+    "price": 8600
+}
+    ]
diff --git a/7/predict.py b/7/predict.py
new file mode 100644
index 0000000000000000000000000000000000000000..f0bd800fc743e273ddba38a772ab154d0f342544
--- /dev/null
+++ b/7/predict.py
@@ -0,0 +1,24 @@
+import numpy as np
+from datas import datas
+X=[]
+Y=[]
+cityMark={"吕梁":1,"太原":2}
+for item in datas:
+    single=[]
+    # 城市
+    single.append(cityMark[item["city"]])
+    # 面积
+    single.append(item["area"])
+    # 房间数
+    single.append(item["rooms"])
+    # 学区房
+    single.append(item["school"])
+    # 装修
+    single.append(item["style"])
+    X.append(single)
+    Y.append(item["price"])
+
+X = np.array(X)
+Y = np.array(Y)
+theta = np.linalg.pinv(X.T.dot(X)).dot(X.T).dot(Y)
+print(theta)