def Sec2Time(second): #将秒数转换为标准时间格式。以为有现成的函数，结果愣是没找到
day=second//(3600*24)
second-=day*3600*24
hour=second//3600
second -=hour*3600
minute=second//60
second-=minute*60
if day == 0:
if hour == 0:
if minute == 0:
return '{:0.2f}S.'.format(second)
else:
return '{:02}M:{:0.2f}S'.format(minute,second)
else:
return '{:02}H:{:02}M:{:0.2f}S'.format(hour,minute,second)
else:
return '{:03}D:{:02}H:{:02}M:{:0.2f}S'.format(day,hour,minute,second)
def GetUrlOpener(proxies={}): #分析代理参数，返回url opener。完整代理格式：user/passwd@:8087。如格式不同，需要修改此分析函数
if proxies:
try:
ap=proxies.split('@')
if len(ap) > 1:
auth=ap[0]
addr=ap[1]
else:
addr=ap[0]
auth=''
if '://' in addr:
ptype=addr[:addr.find('://')]
phost=addr[addr.find('://')+3:]
else:
ptype='http'
phost=addr
proxy={ptype:ptype+'://'+phost}
proxy_handler = urllib.request.ProxyHandler(proxy)
except Exception as ex:
print(ex)
return urllib.request.build_opener()
try:
authlist=auth.split('/')
if len(authlist) > 1:
user=authlist[0]
passwd=authlist[1]
proxy_auth_handler = urllib.request.ProxyBasicAuthHandler()
proxy_auth_handler.add_password('realm',phost,user,passwd)
opener = urllib.request.build_opener(proxy_handler,proxy_auth_handler)
else:
opener = urllib.request.build_opener(proxy_handler)
return opener
except Exception as ex:
print(ex)
return urllib.request.build_opener(proxy_handler)
else:
# urlHandler=urllib.request.urlopen(url)
return urllib.request.build_opener()
def GetUrlFileInfo(url,proxies={}): #获取要下载的文件的信息，包括文件名，文件类型和文件大小
scheme, netloc, path, query, fragment = urllib.parse.urlsplit(url) #分析url
filename=urllib.parse.unquote(path) #如果url中的文件名部分存在中文，将其正确解码出来
filename=filename.split('/')[-1]
opener=GetUrlOpener(proxies) #通过网络请求读取响应头部，根据头部获取文件信息。文件名以服务器返回的文件名信息为准
urlHandler=opener.open(url)
headers=urlHandler.info()
if 'Content-Disposition' in headers: #Content-Disposition字段有可能获取到文件名，不过可能是乱码，没找到解决办法</span>
disposition=headers.get('Content-Disposition')
if 'filename=' in disposition:
filename = disposition.split('filename=')[1]
if filename[0] == '"' or filename[0] == "'":
filename = filename[1:-1]
filename=urllib.parse.unquote(filename)
if filename:
(name,ext)=os.path.splitext(filename)
else:
(name,ext)=('Unknown','')
if 'Content-Length' in headers: #获取文件长度，如果获取失败，则只能使用单线程下载
length=int(headers.get('Content-Length'))
else:
length=-1
(type, kind)=headers.get('Content-Type').split('/') #获取文件类型，备用
infos=[(name,ext),(type,kind),length]
return infos