1 files changed, 22 insertions, 0 deletions
diff --git a/src/predict.py b/src/predict.py
new file mode 100644
index 0000000..85c7eac
--- /dev/null
+++ b/src/predict.py
@@ -0,0 +1,22 @@
+class Predictor:
+    def __init__(self, filename='theta'):
+        self.filename = filename
+        self.theta1, self.theta0 = self.read_theta()
+
+    def make_prediction(self, x):
+        return x * self.theta1 + self.theta0
+
+    def read_theta(self):
+        try:
+            with open(self.filename, 'r') as file:
+                strs = file.read().strip().split(",")
+                if len(strs) != 2:
+                    raise "wrong theta file format"
+                return int(strs[0]), int(strs[1])
+        except IOError:
+            print(self.filename, "do not exist")
+
+if __name__ == "__main__":
+    p = Predictor()
+    x = int(input("Enter a mileage: "))
+    print("The predicted price for this mileage is", p.make_prediction(x))