6 - Async Functions in Python

Author: codingforentrepreneurs

index.py

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+import time
+import asyncio # Python 3.5 +
+
+iteration_times = [1, 3, 2, 4]
+start = time.time()
+total_time = 0
+real_time = 0
+async def sleeper(iteration, seconds): # coroutine
+    global total_time
+    global real_time
+    func_start = time.time()
+    print(f"{iteration}: {seconds}s")
+    await asyncio.sleep(seconds)
+    func_end = time.time() - func_start
+    total_time += func_end
+    real_time = func_end
+
+async def run():
+    results = []
+    for iteration, second in enumerate(iteration_times):
+        results.append(
+            asyncio.create_task(
+                sleeper(iteration, second)
+            )
+        )
+    await asyncio.gather(*results)
+
+asyncio.run(run())
+print(f"Took {total_time} seconds in compute time")
+print(f"Tooke {real_time} seconds in real time")

reference_examples/py/async_sleeper.py

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+import time
+import asyncio # Python 3.5 +
+
+iteration_times = [1, 3, 2, 4]
+start = time.time()
+total_time = 0
+real_time = 0
+async def sleeper(iteration, seconds): # coroutine
+    global total_time
+    global real_time
+    func_start = time.time()
+    print(f"{iteration}: {seconds}s")
+    await asyncio.sleep(seconds)
+    func_end = time.time() - func_start
+    total_time += func_end
+    real_time = func_end
+
+async def run():
+    results = []
+    for iteration, second in enumerate(iteration_times):
+        results.append(
+            asyncio.create_task(
+                sleeper(iteration, second)
+            )
+        )
+    await asyncio.gather(*results)
+
+asyncio.run(run())
+print(f"Took {total_time} seconds in compute time")
+print(f"Tooke {real_time} seconds in real time")

reference_examples/py/sync_sleeper.py

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+import time
+
+iteration_times = [1, 3, 2, 4]
+start = time.time()
+total_time = 0
+def sleeper(iteration, seconds):
+    global total_time
+    func_start = time.time()
+    print(f"{iteration}: {seconds}s")
+    time.sleep(seconds)
+    func_end = time.time() - func_start
+    total_time += func_end
+
+def run():
+    for iteration, second in enumerate(iteration_times):
+        sleeper(iteration, second)
+
+run()
+print(f"Took {total_time} seconds")