2019独角兽企业重金招聘Python工程师标准>>> 
#!/usr/bin/env python
# -*- coding: utf8 -*-
# ftp下载、解压、更新依赖库文件
import os, sys, stat, shutil, string, zipfile, ftplib
from urlparse import urlparse
# list of depended libraries
urllist = [
"ftp://1.2.3.4/foo.zip",
"ftp://1.2.3.4/bar.zip"
]
def remove_old(lst) :
print "cleaning libraries..."
for url in lst :
try :
dirname = os.path.splitext(os.path.split(urlparse(url).path)[1])[0]
print "cleaning [%s]..." % (dirname)
shutil.rmtree(dirname)
print "[%s] cleaned." % (dirname)
except Exception, e :
continue
print "libraries cleaned."
pass
def ftp_download(host, port, username, password, ftpdir, zipname) :
try :
print "downloading file [%s]..." % (zipname)
hftp = ftplib.FTP()
hftp.connect(host, port)
hftp.login(username, password)
hftp.cwd("/")
hftp.cwd(ftpdir)
fp = open(zipname, "wb")
hftp.retrbinary("RETR " + zipname, fp.write)
hftp.close()
fp.close()
except Exception, e :
print "downloading file [%s] failed, err %s." % (zipname, e)
return -1
print "file [%s] downloaded." % (zipname)
return 0
pass
def unzip(zipname, path) :
try :
print "unziping file [%s]..." % (zipname)
os.mkdir(path)
zf = zipfile.ZipFile(zipname, "r")
zf.extractall(path)
zf.close()
os.remove(zipname)
except Exception, e :
print "unziping file [%s] failed." % (zipname)
return -1
print "file [%s] unziped." % (zipname)
return 0
pass
def get_lib(url) :
print "getting library [%s]..." % url
tp = urlparse(url)
host = tp.netloc
path = tp.path
[ftpdir, zipname] = os.path.split(path)
localdir = os.path.splitext(zipname)[0]
[port, username, password] = [21, "anonymous", "anonymous"]
ret = ftp_download(host, port, username, password, ftpdir, zipname)
if ret != 0 :
print "getting library [%s] failed." % url
return -1
ret = unzip(zipname, localdir)
if ret != 0 :
print "getting library [%s] failed." % url
return -1
print "library [%s] got." % url
return 0
pass
def update_libs(lst) :
print "updating libraries..."
for url in lst :
ret = get_lib(url)
if ret != 0 :
print "updating libraries failed."
return
print "libraries updated."
pass
# main
if __name__ == "__main__" :
print "depended libraries:"
for url in urllist :
print "\t[%s]" % url
print "========================================"
remove_old(urllist)
update_libs(urllist)
pass简单起见，没有把依赖库列表和代码分开，自定义依赖库直接改代码中的 url 数组即可。