py_ad_3_4.py

"""
Section 3
Concurrency, CPU Bound vs I/O Bound - I/O Bound(1) - Synchronous

Keyword - I/O Bound, requests

"""
# I/O-Bound Sync 예제(https://realpython.com/python-concurrency/#synchronous-version)

# pip install requests
import requests
import time

# 실행함수1(다운로드)
def request_site(url, session):
    # 세션 확인
    # print(session)
    # print(session.headers)

    with session.get(url) as response:
        print(f"[Read Contents : {len(response.content)}, Status Code : {response.status_code}] from {url}")
        

# 실행함수2
def request_all_site(urls):
    with requests.Session() as session:
        for url in urls:
            request_site(url, session)

def main():
    # 테스트 URLS
    urls = [
            "https://www.jython.org",
            "http://olympus.realpython.org/dice",
            "https://realpython.com/"
    ] * 3
    
    # 실행시간 측정
    start_time = time.time()

    # 실행
    request_all_site(urls)

    # 실행 시간 종료
    duration = time.time() - start_time

    print()
    
    # 결과 출력
    print(f"Downloaded {len(urls)} sites in {duration} seconds")

if __name__ == "__main__":
    main()