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21.01. Programming/Python/httpx.md

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+---
+tags: 
+aliases: 
+date: 2024-11-10
+time: 16:54:12
+description:
+---
+
+**可以用來代替[requests](https://pypi.org/project/requests/)**
+
+## **Why [requests](https://pypi.org/project/requests/) is Overrated:**
+
+**Blocking IO:** `Requests` is synchronous, which means each call waits for the previous call to finish. This is less than ideal when working with I/O-bound programs.
+
+**Heavy:** It’s got loads of convenience baked in, but it does have a cost in terms of speed and memory footprint. Not a big deal on a simple script, but on larger systems this can be a resource hog.
+
+## **What You Should Instead Use:** `httpx`
+
+For parallel processing of requests, `httpx`provides a similar API but with asynchronous support. So, if you make many API calls, it’ll save you some time and resources because it will process those requests concurrently.
+
+```python
+import httpx 
+  
+async def fetch_data(url):  
+    async with httpx.AsyncClient() as client:  
+        response = await client.get(url)  
+        return response.json()  
+  
+# Simple and non-blocking  
+data = fetch_data("https://api.example.com/data")
+```
+
+> **Pro Tip:** Asynchronous requests can reduce the processing time by a great amount if the task at hand is web scraping or ingesting data from somewhere.
+
+# 參考來源
+- [5 Overrated Python Libraries (And What You Should Use Instead) | by Abdur Rahman | Nov, 2024 | Python in Plain English](https://python.plainenglish.io/5-overrated-python-libraries-and-what-you-should-use-instead-106bd9ded180)