Create app.py

app.py

@@ -0,0 +1,50 @@
+from pydantic import BaseModel
+from fastapi import FastAPI, HTTPException
+from typing import Optional
+import uvicorn
+
+app= FastAPI()
+# 1. Define the blueprint for APIs
+class Customer(BaseModel):
+    id:int
+    name: str
+    email: str
+    phone: Optional[str] = None
+    address: Optional[str] = None
+    
+# Initialize customer list
+customer_list = []
+
+# 2. Create the api endpoint
+#Create 
+@app.post("/customers", response_model=Customer)
+def create_customer(customer:Customer):
+    customer_list.append(customer)
+    return customer
+    
+#Read
+@app.get("/customers", response_model= list[Customer])
+def get_customers():
+    return customer_list
+
+#Update
+@app.put("/customers/{id}", response_model=Customer)
+def update_customer(id: int, customer: Customer):
+    for i, existing_customer in enumerate(customer_list):
+        if existing_customer.id == id:
+            customer_list[i] = customer
+            return customer
+    raise HTTPException (status_code=404, detail ="Customer not found")
+
+#Delete 
+@app.delete("/customers/{id}", response_model=Customer)
+def delete_customer(id: int):
+    for i, customer in enumerate(customer_list):
+        if customer.id == id:
+            removed_customer = customer_list.pop(i)
+            return removed_customer
+    raise HTTPException(status_code=404, detail="Customer not found")
+
+
+if__name__== "__main__":
+  uvicorn.run(app, host= "0.0.0.0", port=7860)