python的requests模块进行下载带宽限制,进行现在速度限制,避免拉爆服务器。开启requests的stream=True就可以进行渐进式下载,然后再适当的sleep一下。就可以减少下载带宽,限制下载速度了。
# NOTE the stream=True parameter below
recvlen = 0
tickss = time.time()
with requests.get(mp3url, stream=True) as r:
r.raise_for_status()
with open(mp3f, 'wb') as f:
for chunk in r.iter_content(chunk_size=30720):
if chunk: # filter out keep-alive new chunks
f.write(chunk)
recvlen = recvlen + len(chunk)
time.sleep(0.1)
# f.flush()
tickse = time.time()
#f=requests.get(mp3url)
#with open(mp3f,"wb") as code:
# code.write(f.content)
print("------------------------")
print(title)
print(mp3f)
print(mp3url)
print("长度:",recvlen)
print("耗时:",tickse-tickss,"秒")
print("++++++++++++++++++++++++")
time.sleep(3)
限速结果日志如下:
长度: 2950970
耗时: 9.922253608703613 秒
长度: 3413255
耗时: 11.447856426239014 秒
长度: 3465066
耗时: 11.52188777923584 秒
长度: 5089296
耗时: 16.877254486083984 秒
长度: 2969808
耗时: 9.891138792037964 秒
长度: 5777092
耗时: 19.198574781417847 秒
长度: 6185409
耗时: 20.51071047782898 秒
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