ffmpeg -i out.mp4 -vbsf h264_mp4toannexb -vcodec copy -acodec aac -strict 2 -g 150 -hls_time 20 -hls_list_size 0 -start_number 0 -f hls -y out.m3u8

ffmpeg -i out.mp4 -bsf:v h264_mp4toannexb -vcodec copy -acodec aac -strict 2 -g 150 -hls_time 20 -hls_list_size 0 -start_number 0 

https://www.ikanbot.com/play/810009

import requests
import re
import os
header = {
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/1

pip install alembic 

alembic init alembic

sqlalchemy.url = mysql+pymysql://root:chenhaifeng@47.120.55.99:3306/fastapi

# target_metadata = mymodel.Base.metadata
from applications.extensions import metadata
from applications.models im

pip install databases
pip install databases[aiomysql]
pip install pymysql

from typing import List

import databases
import sqlalchemy
from fastapi import FastAPI
from pydantic import BaseModel

DATABASE_URL = "mysql+pymysql://root:chenhaifeng@

from pathlib import Path
import os, csv, random

# 1. 分类
class_name_list = os.listdir('images')
class_to_num = {class_name: num for num, class_name in enumerate(class_name_list)}
# 文件夹名:排序 {'err': 0, 'suc': 1}

# 2. 合并所有数据
image_dir = []
for class_name in class_to_num

pip install orjson

# import orjson
import json
import random
from time import time


start = time()


json1 = [
    {
        "id": 9999,
        "value": random.uniform(0, 1000)
    } 
    for _ in range(2000000)
]

# 1. 第三方orjson速度 1.5917122364044

from django.test import TestCase
from selenium import webdriver
import time


class UserAuthTestCase(TestCase):
    @classmethod
    def setUpClass(cls):
        print("开始")

    @classmethod
    def tearDownClass(cls):
        print("结束")

    def setU

import unittest, sys, os
"""
1. 每个测试文件必须test_开头.py
2. 把要测试的内容引入进来, 方便
3. class必须继承TestCase
4. method必须以test_开头
"""
class TestSeleiumn(unittest.TestCase):

    @unittest.skipIf(sys.platform == "win32", "windows系统不允许")
    # @unitte

pip install gerapy

gerapy init

gerapy migrate

gerapy runserver

端口号写6800

    1. 点击部署进入
    2. 打包项目把写好的scrapy导入, 打包成压缩包,或者直接复制项目到gerapy里的project文件夹里面
    3. 点击部署

    1.

pip install scrapy

scrapy startporject 项目名

cd 项目名 # 进入项目文件夹
scrapy genspider chf www.xxxx.com # chf是爬虫文件名, www.xxx.com是要爬的网站域名

scrapy crawl 爬虫文件名 -o wangzhan.json
或
scrapy crawl 爬虫文件名 -o wangzhan.csv