feat(projects): 新增Django综合案例示例代码及素材

projects/web-django/delegate.py

@@ -0,0 +1,17 @@
+class Proxy:
+    def __init__(self, delegate):
+        self.delegate = delegate
+
+    def fetch(self):
+        print(f"fetching {self.delegate.url} by proxy...")
+
+
+class Request:
+    def __init__(self, url, proxy=False):
+        self.url = url
+        self.proxy = Proxy(self) if proxy else None
+
+
+if __name__ == "__main__":
+    req = Request("https://sspai.com", proxy=True)
+    req.proxy.fetch()