def download_one(cc):
image = yield from get_flag(cc) # 유일한 차이점
# 기존 코드
# image = get_flag(cc)
show(cc)
save_flag(image, cc.lower() + '.gif')
return cc
def download_many(cc_list): # <8>
for cc in sorted(cc_list): # <9>
image = get_flag(cc)
show(cc)
save_flag(image, cc.lower() + '.gif')
return len(cc_list)
def download_one(
cc
): # Function to download a single image; this is what each thread will execute.
image = get_flag(cc)
show(cc)
save_flag(image, cc.lower() + '.gif')
return cc
def download_one(cc):
image = yield from get_flag(cc)
country = yield from get_country(cc)
show(cc)
filename = '{} - {}.gif'.format(country,cc)
save_flag(image,filename)
return cc
def download_one(cc): # ➏ download_one 函数也必须是协程，因为用到了yield from。
image = yield from get_flag(
cc
) # ➐ 与依序下载版 download_one 函数唯一的区别是这一行中的 yield from；函数定义体中的其他代码与之前完全一样。
show(cc)
save_flag(image, cc.lower() + '.gif')
return cc
def download_one(cc,name): # <3>
image = get_flag(cc)
show(cc)
# print(name,end=' ') # 只是为了显示传参数
sys.stdout.flush()
save_flag(image, cc.lower() + '.gif')
return cc
def download_one(cc):
"""
画像を1枚ダウンロードする関数です。スレッドはそれぞれこれを実行します。
"""
image = get_flag(cc)
show(cc)
save_flag(image, cc.lower() + '.gif')
return cc
def download_one(cc): """ 下载一个图像的函数，在各个线程中执行的函数 """ image = get_flag(cc) show(cc) save_flag(image, cc.lower() + '.gif') return cc
def download_one(cc):
"""
下载一个图像的函数，这是在各个线程中执行的函数。
:param cc:
:return:
"""
image = get_flag(cc)
show(cc)
save_flag(image, cc.lower() + ".gif")
return cc
async def download_one(loop, country):
''''''
# ClientSession error를 잡기 위해 session을 전달
# loop = loop를 주어 __aexit__ 처리
async with aiohttp.ClientSession(loop=loop) as session:
image = await get_flag(session, country)
show(country)
save_flag(image, country.lower(), type='png')
return country
async def main(
): # Declare as async, since we want to use it in the event loop
t0 = time.time()
futures = []
for cc in flag_list():
show(cc)
url = f'{BASE_URL}/{cc}'
futures.append(loop.run_in_executor(None, requests.get, url))
for future in futures:
response = await future
save_flag(response.content, response.url.split('/')[-1])
t1 = time.time() - t0
print(f'\n{t1:.2f}sec')
def download_one(cc):
"""
download_oneもyield fromを用いているので、コルーチンでなければなりません。
"""
# 以前実装したdownload_oneと異なるのは、
# この行に加わっている「yield from」の部分だけで、他は全く同じです。
image = yield from get_flag(cc)
show(cc)
save_flag(image, cc.lower() + '.gif')
return cc
async def download_one(cc, semaphore):
# semaphore 参数是 asyncio.Semaphore 类的实例
# Semaphore 类是同步装置，用于限制并发请求
try:
# semaphore当成上下文管理器使用,完成后自动释放
# 如果semaphore 计数器的值小于所允许的最大值，只有当前协程会阻塞，如果大于的话，当前进程都会堵塞
async with semaphore:
image = await get_flag(cc)
except Exception as exc:
raise FetchError(cc) from exc
else:
save_flag(image, cc.lower() + '.gif')
status = HTTPStatus.ok
msg = 'ok'
show(cc)
return Result(status, cc)
def download_one(country):
img = get_img(FLAGS_GETTER_LINK, country)
show(country)
download_flag(img, country)
def download_one(cc):
image = get_pic(cc)
show(cc)
save_pic(image, cc + ".gif")
return cc
def download_one(cc):
# The only difference from the sequential implementation of download_one are the words "yield from" in this line; the rest of the function is exactly as before
image = yield from get_flag(cc)
show(cc)
save_flag(image, cc.lower() + '.gif')
return cc
def download_one(cc): # <3>
image = get_flag(cc)
show(cc)
save_flag(image, cc.lower() + '.gif')
return cc
def download_one(cc):
image = yield from get_flag(cc)
show(cc)
save_flag(image, 'gif2/' + cc.lower() + '.git')
return cc
def download_one(suffix):
image = yield from get_flag(suffix)
show(suffix)
save_flag(image, suffix)
return suffix
async def download_one(client, cc): # <6>
image = await get_flag(client, cc) # <7>
show(cc)
save_flag(image, cc.lower() + '.gif')
return cc
async def download_one(cc):
img = await get_flag(cc)
show(cc)
save_flag(img, cc + '.gif')
return cc
async def download_one(cc): # <6>
image = await get_flag(cc) # <7>
show(cc)
save_flag(image, cc.lower() + '.gif')
return cc
def download_one(cc): # <6>
image = yield from get_flag(cc) # <7>
show(cc)
save_flag(image, cc.lower() + '.gif')
return cc
def download_one(cc):
image = get_flag(cc)
show(cc)
save_flag(image, cc.lower() + ".gif")
return cc
async def download_one(cc):
async with aiohttp.ClientSession() as session:
image = await get_flag(session, cc)
show(cc)
save_flag(image, cc.lower() + '.gif')
return cc
async def download_one(cc):
show(cc)
url = f'{BASE_URL}/{cc}'
future = loop.run_in_executor(None, requests.get, url)
response = await future
save_flag(response.content, cc)
def download_one(name):
image = yield from get_img(name)
show(name)
download_flag(image, name)
return name
async def download_one(loop, country):
async with aiohttp.ClientSession(loop=loop) as session:
image = await get_flag(session, country)
show(country)
save_flag(image, country.lower(), type='png')
return country
def download_one(cc):
image = yield from get_flag(cc)
show(cc)
save_flag(image, cc.lower() + ".gif")
return cc
def download_one(cc): image = yield from get_flag(cc) show(cc) save_flag(image, cc.lower() + '.gif') return cc
def dl_one(cc):
image = get_flag(cc)
show(cc)
save_flag(image, cc.lower() + '.gif')
return cc
async def download_one(session, cc):
image = await get_flag(session, cc)
show(cc)
save_flag(image, cc.lower() + '.gif')
return cc
def download_one(cc): # <3> 하나의 이미지를 내려받을 함수; 각 스레드에서 이 함수 실행 예정
image = get_flag(cc)
show(cc)
save_flag(image, cc.lower() + '.gif')
return cc
async def download_one(cc):
"""一级被调协程，代表一项下载任务"""
image = await get_flag(cc)
show(cc)
save_flag(image, cc.lower() + '.gif')
return cc
def download_one(cc):
"""将串行版本中下载单张图像的代码剥离出来"""
image = get_flag(cc)
show(cc)
save_flag(image, cc.lower() + '.gif')
return cc
def download_one(cc):
image = get_flag(cc)
show(cc)
save_flag(image, cc.lower() + '.gif')
return cc
def download_one(cc):
img = get_flag(cc)
show(cc)
save_flag(img, cc.lower() + ".gif")
return cc