python3 retrieve()，,鏍囩锛?a hre

python3 retrieve()，,鏍囩锛?a hre

鏍囩锛?a href='http://www.byrx.net/so/1/ESS' title='ESS'>ESS

retreive()琚涓烘槸涓€佹棫鍑芥暟锛屽彲鑳戒細鍦ㄥ皢鏉ユ姏寮冦€?br/>urllib.request.urlretrieve(url, filename=None, reporthook=None, data=None)
Exceptions鍜屽嚱鏁皍rlopen()鐩稿悓銆?br/>鍏蜂綋鏂囨。锛屽弬瑙?a href="https://docs.python.org/3/library/urllib.request.html#module-urllib.request" rel="nofollow">https://docs.python.org/3/library/urllib.request.html#module-urllib.request

浠ｇ爜鐗囨

from urllib.request import urlretrieveimport socketimport osimport sysdef  reporthook(blocknum, bs, size):    #  blocknum:宸茬粡涓嬭浇鐨勬暟鎹潡       bs:鏁版嵁鍧楃殑澶у皬      size:杩滅▼鏂囦欢鐨勫ぇ灏?    per = 100.0 * blocknum * bs / size    if per > 100 :        per = 100    sys.stdout.write(鈥楧ownload progress: %.2f%%  \r鈥?per)    sys.stdout.flush()class ClassName():    def __init__(self):        socket.setdefaulttimeout(30)        def run(self):               ...           while True:                .....                try:                    urlretrieve(url,localfile, reporthook= reporthook)                 except socket.timeout:                    self.redownload(url,localfile)                 except Exception as e:                    StatusCode=e.getcode()                    if StatusCode == 404:                        print(e)                        break                    self.redownload(url,localfile)    def redownload(self,url,localfile):        count = 1        while count <= 5:            try:                urlretrieve(url,localfile, reporthook= reporthook)                                                                break            except socket.timeout:                err_info = 鈥楻eloading for %d time.....鈥?count if count == 1 else 鈥楻eloading for %d times.....鈥?count                print(err_info)                count += 1        if count > 5:            print("download job failed!") 

python3 retrieve()

鏍囩锛?a href='http://www.byrx.net/so/1/ESS' title='ESS'>ESS

鍘熸枃鍦板潃锛歨ttps://blog.51cto.com/whbill/2483367