import requests
python中有一個(gè)第三方庫(kù)叫'requests'中提供了所有和http請(qǐng)求相關(guān)的函數(shù)
1.get請(qǐng)求
"""
get(url, params=None) - 發(fā)送請(qǐng)求獲取服務(wù)器返回的響應(yīng)
url - 請(qǐng)求地址, 字符串
params - 請(qǐng)求參數(shù), 字典
"""
方法一: (既適用于get也適用于post)
url = 'https://www.apiopen.top/satinApi'
params = {'type': 1, 'page': 2}
response = requests.get(url, params)
print(response)
方法二: 只能用于get請(qǐng)求
url = 'https://www.apiopen.top/satinApi?type=1&page=1'
response = requests.get(url)
print(response)
2.獲取請(qǐng)求結(jié)果
1)響應(yīng)頭
{'Server': 'nginx', 'Date': 'Thu, 15 Aug 2019 03:39:09 GMT', 'Content-Type': 'application/json;charset=utf-8', 'Transfer-Encoding': 'chunked', 'Connection': 'keep-alive', 'Access-Control-Allow-Origin': '*', 'Access-Control-Allow-Methods': 'POST, GET, OPTIONS, DELETE', 'Access-Control-Max-Age': '3600', 'Access-Control-Allow-Headers': 'x-requested-with'}
print(response.headers)
2)響應(yīng)體(數(shù)據(jù))
a.獲取二進(jìn)制對(duì)應(yīng)的原數(shù)據(jù)(數(shù)據(jù)本身是圖片策州、壓縮文件稳捆、視頻等文件數(shù)據(jù))
content = response.content
print(type(content))
b.獲取字符類(lèi)型的數(shù)據(jù)
text = response.text
print(type(text))
c.獲取json數(shù)據(jù)(json轉(zhuǎn)換成python對(duì)應(yīng)的數(shù)據(jù))
json = response.json()
print(type(json))
print(json)
import threading
from datetime import datetime
from time import sleep
"""
每個(gè)進(jìn)程默認(rèn)都有一條線(xiàn)程贡珊，這個(gè)線(xiàn)程叫主線(xiàn)程移斩。其他線(xiàn)程叫子線(xiàn)程
threading模塊中Thread的對(duì)象就是線(xiàn)程對(duì)象，當(dāng)程序中需要子線(xiàn)程就創(chuàng)建Thread類(lèi)的對(duì)象
"""
def download(film_name):
# film_name = '魔童降世'
print('開(kāi)始下載%s:%s' % (film_name, datetime.now()))
print(film_name, threading.current_thread())
sleep(5)
print('%s下載結(jié)束:%s' % (film_name, datetime.now()))
if name == 'main':
# download('魔童降世')
# download('掃毒2')
# download('怦然心動(dòng)')
# 1.創(chuàng)建線(xiàn)程對(duì)象
"""
Thread(target=None,args=()) - 創(chuàng)建并且返回一個(gè)子線(xiàn)程對(duì)象
target - 函數(shù)類(lèi)型(function), 在線(xiàn)程啟動(dòng)的時(shí)候這個(gè)函數(shù)會(huì)在子線(xiàn)程中執(zhí)行
args - 元祖，元祖中的元素就是target對(duì)應(yīng)的函數(shù)在子線(xiàn)程中調(diào)用的時(shí)候傳的實(shí)參
"""
t1 = threading.Thread(target=download, args=('魔童降世',))
t2 = threading.Thread(target=download, args=('掃毒2',))
t3 = threading.Thread(target=download, args=('怦然心動(dòng)',))
print(threading.current_thread())
# 2.啟動(dòng)線(xiàn)程
"""
線(xiàn)程對(duì)象.start() - 讓線(xiàn)程去執(zhí)行線(xiàn)程中的任務(wù)
target(*args)
"""
t1.start()
t2.start()
t3.start()
from threading import *
from datetime import datetime
from time import sleep
程序結(jié)束
"""
線(xiàn)程中的任務(wù)執(zhí)行完成線(xiàn)程就結(jié)束; 程序出現(xiàn)異常結(jié)束的是線(xiàn)程，不是進(jìn)程
進(jìn)程中的所有線(xiàn)程就結(jié)束進(jìn)程才結(jié)束;
"""
1.聲明一個(gè)類(lèi)繼承Thread
2.實(shí)現(xiàn)類(lèi)中的run方法牡昆，這個(gè)方法中的代碼就是需要在子線(xiàn)程中執(zhí)行的代碼
3.需要子線(xiàn)程的時(shí)候就創(chuàng)建自己聲明的類(lèi)的對(duì)象，并且不需要任何參數(shù)
class DownloadThread(Thread):
def init(self, film_name):
super().init()
self.film_name = film_name
def run(self) -> None:
print('開(kāi)始下載%s:%s' % (self.film_name, datetime.now()))
print(current_thread())
sleep(5)
print('%s下載結(jié)束:%s' % (self.film_name, datetime.now()))
if name == 'main':
t1 = DownloadThread('魔童降世')
t2 = DownloadThread('掃毒')
t1.start()
t2.start()
print([1, 2, 3][10])
print('==============')
