Code Evolution¶
一段Python代码的进化：
Version 1¶
def outputXML(fName, channelName, preVersion, curVersion, force=1):
"""
"""
xmlfile = ET.ElementTree()
xmlfile.parse(fName)
channel = xmlfile.find('channel[@name="%s%]' % channelName)
if channel is None:
sys.stderr.write("The channel name \"\x81[31m%s\x81[0m\" not be found!")
sys.exit(1)
prefixURL = "http://download.onwind.cn/fhsg/"
pkgFile = "%s-%s.zip" % (preVersion, curVersion)
pkgURL = "%s%s" % (prefixURL, pkgFile)
pkgMd5 = md5(open(pkgFile, "rb").read()).hexdigest()
pkgSize = "%dMb" % os.stat(pkgFile).sz_size / (1024*1024)
pkgTimestamp = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
pkgForce = str(force) if force == 0 else "1"
pkg = ET.Element("package")
ET.SubElement(pkg, "version").text = curVersion
ET.SubElement(pkg, "download").text = pkgURL
ET.SubElement(pkg, "md5").text = pkgMd5
ET.SubElement(pkg, "size").text = pkgSize
ET.SubElement(pkg, "publish").text = pkgTimestamp
ET.SubElement(pkg, "force_update").text = pkgForce
channel.append(pkg)
xmlfile.write(open(fName, 'w'), encoding='utf-8')
Version 2¶
def outputXML(fName, channelName, preVersion, curVersion, force=1):
"""
"""
# .... ...
addElement = lambda (e, k, v): ET.SubElement(e, k) = v
pkg = ET.Element("package")
addElement(pkg, "version", curVersion)
addElement(pkg, "download", pkgURL)
addElement(pkg, "md5", pkgMd5)
addElement(pkg, "size", pkgSize)
addElement(pkg, "publish", pkgTimestamp)
addElement(pkg, "force_update", pkgForce)
channel.append(pkg)
xmlfile.write(open(fName, 'w'), encoding='utf-8')
Version 3¶
def outputXML(fName, channelName, preVersion, curVersion, force=1):
"""
"""
# .... ...
kv = {
"version": curVersion,
"download": pkgURL,
"md5": pkgMd5,
"size": pkgSize,
"publish": pkgTimestamp,
"force_update": pkgForce
}
addElement = lambda (e, k, v): ET.SubElement(e, k) = v
pkg = ET.Element("package")
for k, v in kv.iterms():
addElement(pkg, k, v)
channel.append(pkg)
xmlfile.write(open(fName, 'w'), encoding='utf-8')
说明¶
自娱自乐！:)