Create app.py

app.py

@@ -0,0 +1,55 @@
+from typing import List, Optional
+from pydantic import BaseModel
+from fastapi import FastAPI, HTTPException
+import uvicorn
+
+app = FastAPI()
+
+#1. define the blueprint for APIs
+
+class Customers(BaseModel):
+
+    id: int
+    name: str
+    email: str
+    phone: Optional[str] = None
+    address: Optional[str] = None
+
+#2. create the APIs endpoint
+
+customers_list = []
+# create
+@app.post("/customers", response_model=Customers)
+def create_customer(customer: Customers):
+    customers_list.append(customer)
+    return customer
+
+# read
+
+@app.get("/customers", response_model=List[Customers])
+def get_customers():
+    return customers_list
+
+# update
+@app.put("/customers/{id}", response_model=Customers)
+def update_customer(id: int, customer: Customers):
+    for i, existing_customer in enumerate(customers_list):
+        if existing_customer.id == id:
+            customers_list[i] = customer
+            return customer
+    raise HTTPException(status_code=404, detail="Customer not found")
+
+# delete
+@app.delete("/customers/{id}", response_model=Customers)
+def delete_customer(id: int):
+    for i, existing_customer in enumerate(customers_list):
+        if existing_customer.id == id:
+            deleted_customer = customers_list.pop(i)
+            return deleted_customer
+    raise HTTPException(status_code=404, detail="Customer not found")
+
+#3. run the app
+
+if __name__ == "__main__":
+    uvicorn.run(app, host="0.0.0.0", port=7860)
+