python zip和unzip数据
发布时间:2020-12-17 17:17:21 所属栏目:Python 来源:网络整理
导读:今天PHP站长网 52php.cn把收集自互联网的代码分享给大家,仅供参考。 # zipping and unzipping a string using the zlib module# a very large string could be zipped and saved to a file speeding up file writing tim
以下代码由PHP站长网 52php.cn收集自互联网 现在PHP站长网小编把它分享给大家,仅供参考 # zipping and unzipping a string using the zlib module # a very large string could be zipped and saved to a file speeding up file writing time # and later reloaded and unzipped by another program speeding up reading of the file # tested with Python24 vegaseat 15aug2005 import zlib str1 = """Dallas Cowboys football practice at Valley Ranch was delayed on Wednesday for nearly two hours. One of the players,while on his way to the locker room happened to look down and notice a suspicious looking,unknown white powdery substance on the practice field. The coaching staff immediately suspended practice while the FBI was called in to investigate. After a complete field analysis,the FBI determined that the white substance unknown to the players was the goal line. Practice was resumed when FBI Special Agents decided that the team would not be likely to encounter the substance again. """ print '-'*70 # 70 dashes for the fun of it print str1 print '-'*70 crc_check1 = zlib.crc32(str1) print "crc before zip=",crc_check1 print "Length of original str1 =",len(str1) # zip compress the string zstr1 = zlib.compress(str1) print "Length of zipped str1 =",len(zstr1) filename = 'Dallas.zap' # write the zipped string to a file fout = open(filename,'w') try: print >> fout,zstr1 except IOError: print "Failed to open file..." else: print "done writing",filename fout.close() # read the zip file back fin = open(filename,'r') try: zstr2 = fin.read() except IOError: print "Failed to open file..." else: print "done reading",filename fin.close() # unzip the zipped string from the file str2 = zlib.decompress(zstr2) print '-'*70 print str2 print '-'*70 crc_check2 = zlib.crc32(str2) print "crc after unzip =",crc_check2,"(check sums should match)" 以上内容由PHP站长网【52php.cn】收集整理供大家参考研究 如果以上内容对您有帮助,欢迎收藏、点赞、推荐、分享。 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |