feat: 新增技能扩展 N3 一章相关示例源码

code/newsletter/N3/futures_map_example.py

@@ -0,0 +1,19 @@
+from concurrent.futures import ProcessPoolExecutor
+
+
+def fib(n):
+    if n <= 1:
+        return n
+    return fib(n - 1) + fib(n - 2)
+
+
+def main():
+    n = [1, 3, 5, 10, 20]
+
+    with ProcessPoolExecutor(max_workers=4) as pool:
+        result = pool.map(fib, n)
+        print(list(result))
+
+
+if __name__ == '__main__':
+    main()