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tylerdavetylerdave
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add httpx for dec 2020 (#71)
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‎HTTPX/HTTPX.ipynb

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{
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"cells": [
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{
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"cell_type": "markdown",
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"metadata": {
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"slideshow": {
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"slide_type": "slide"
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}
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},
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"source": [
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"# HTTPX\n",
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"\n",
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"<img src=\"https://raw.githubusercontent.com/encode/httpx/master/docs/img/butterfly.png\" alt=\"HTTPX Logo\" style=\"width: 400px;\"/>\n",
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"\n",
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"https://www.python-httpx.org/\n",
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"\n",
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"*A next-generation HTTP client for Python.*\n",
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"\n",
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"HTTPX is a fully featured HTTP client for Python 3, which provides sync and async APIs, and support for both HTTP/1.1 and HTTP/2.\n",
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"\n",
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"Alternatives: `aiohttp`, `asks`"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 1,
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"metadata": {
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"slideshow": {
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"slide_type": "slide"
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}
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},
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"outputs": [],
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"source": [
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"from datetime import datetime"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {
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"slideshow": {
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"slide_type": "fragment"
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}
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},
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"source": [
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"Using httpbin.org:\n",
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"\n",
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"`https://httpbin.org/delay/1`"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"slideshow": {
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"slide_type": "slide"
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}
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},
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"outputs": [],
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"source": [
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"import requests"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"slideshow": {
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"slide_type": "fragment"
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}
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},
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"outputs": [],
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"source": [
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"def requests_get(index=None):\n",
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" response = requests.get(\"https://httpbin.org/delay/1\")\n",
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" response.raise_for_status()\n",
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" print(f\"{index} - {response.status_code} - {response.elapsed}\")"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"slideshow": {
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"slide_type": "fragment"
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}
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},
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"outputs": [],
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"source": [
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"requests_get()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"slideshow": {
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"slide_type": "subslide"
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}
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},
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"outputs": [],
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"source": [
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"before = datetime.now()\n",
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"\n",
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"for index in range(0, 5):\n",
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" requests_get(index)\n",
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" \n",
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"after = datetime.now()\n",
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"print(f\"total time: {after - before}\")"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"slideshow": {
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"slide_type": "slide"
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}
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},
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"outputs": [],
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"source": [
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"import httpx"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"slideshow": {
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"slide_type": "fragment"
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}
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},
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"outputs": [],
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"source": [
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"def httpx_get(index=None):\n",
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" response = httpx.get(\"https://httpbin.org/delay/1\")\n",
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" response.raise_for_status()\n",
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" print(f\"{index} - {response.status_code} - {response.elapsed}\")"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"slideshow": {
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"slide_type": "fragment"
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}
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},
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"outputs": [],
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"source": [
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"httpx_get()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"slideshow": {
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"slide_type": "subslide"
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}
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},
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"outputs": [],
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"source": [
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"before = datetime.now()\n",
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"\n",
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"for index in range(0, 5):\n",
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" httpx_get(index)\n",
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" \n",
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"after = datetime.now()\n",
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"print(f\"total time: {after - before}\")"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"slideshow": {
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"slide_type": "slide"
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}
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},
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"outputs": [],
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"source": [
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"async with httpx.AsyncClient() as client:\n",
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" response = await client.get('https://httpbin.org/delay/1')\n",
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"print(response)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"slideshow": {
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"slide_type": "fragment"
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}
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},
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"outputs": [],
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"source": [
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"async def async_httpx_get(index=None):\n",
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" async with httpx.AsyncClient() as client:\n",
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" response = await client.get(\"https://httpbin.org/delay/1\")\n",
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" response.raise_for_status()\n",
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" print(f\"{index} - {response.status_code} - {response.elapsed}\")"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"slideshow": {
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"slide_type": "fragment"
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}
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},
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"outputs": [],
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"source": [
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"await async_httpx_get()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"slideshow": {
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"slide_type": "subslide"
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}
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},
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"outputs": [],
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"source": [
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"before = datetime.now()\n",
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"\n",
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"for index in range(0, 5):\n",
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" await async_httpx_get(index)\n",
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" \n",
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"after = datetime.now()\n",
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"print(f\"total time: {after - before}\")"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"slideshow": {
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"slide_type": "subslide"
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}
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},
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"outputs": [],
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"source": [
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"many_gets = tuple(async_httpx_get(index) for index in range(0,5))"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"slideshow": {
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"slide_type": "fragment"
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}
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},
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"outputs": [],
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"source": [
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"import asyncio\n",
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"\n",
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"before = datetime.now()\n",
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"\n",
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"await asyncio.gather(*many_gets)\n",
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"\n",
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"after = datetime.now()\n",
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"print(f\"total time: {after - before}\")"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"slideshow": {
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"slide_type": "slide"
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}
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},
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"outputs": [],
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"source": [
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"semaphore = asyncio.Semaphore(3)\n",
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"\n",
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"async def async_semaphore_httpx_get(index=None):\n",
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" async with semaphore:\n",
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" async with httpx.AsyncClient() as client:\n",
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" response = await client.get(\"https://httpbin.org/delay/1\")\n",
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" response.raise_for_status()\n",
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" print(f\"{index} - {response.status_code} - {response.elapsed}\")"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"slideshow": {
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"slide_type": "subslide"
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}
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},
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"outputs": [],
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"source": [
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"semaphore_many_gets = tuple(\n",
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" async_semaphore_httpx_get(index) for index in range(0,10))"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"slideshow": {
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"slide_type": "fragment"
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}
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},
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"outputs": [],
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"source": [
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"before = datetime.now()\n",
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"\n",
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"await asyncio.gather(*semaphore_many_gets)\n",
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"\n",
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"after = datetime.now()\n",
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"print(f\"total time: {after - before}\")"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {
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"slideshow": {
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"slide_type": "slide"
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}
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},
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"source": [
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"## Features\n",
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"\n",
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"HTTPX is a high performance asynchronous HTTP client, that builds on the well-established usability of requests, and gives you:\n",
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"\n",
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"- A broadly requests-compatible API.\n",
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"- Standard synchronous interface, but with async support if you need it.\n",
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"- HTTP/1.1 and HTTP/2 support.\n",
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"- Ability to make requests directly to WSGI applications or ASGI applications.\n",
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"- Strict timeouts everywhere.\n",
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"- Fully type annotated.\n",
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"- 100% test coverage.\n",
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"\n",
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"Plus all the standard features of requests..."
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": []
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}
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],
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"metadata": {
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"celltoolbar": "Slideshow",
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"kernelspec": {
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"display_name": "Python 3",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.8.5"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 4
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}

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