Getdata.py 文件源码

def get_gimdata(self):
        import urllib, os
        if self.file_exist():
            print "No need to download GIM data..."
            return
        print "Start to download GIM data..."
        weblink = "ftp://ftp.unibe.ch/aiub/CODE/{0}/".format(self.year)
        if not os.path.isfile(self.sourcefn[:-2]): 
            if not os.path.isfile(self.sourcefn):
                download = urllib.URLopener()
                download.retrieve(weblink+self.sourcefn, self.sourcefn)
            os.system("gzip -fd {0}".format(self.sourcefn))