代码：
#------------------------------------------------------------------------------------ # torrentParser1.04，用于解析torrent文件 # 增加了函数getMegnet,能将种子文件转磁力链 # 2018年5月13日 #------------------------------------------------------------------------------------ from bencode import bdecode,bencode import time import hashlib import base64 #------------------------------------- # torrentParser类 #------------------------------------- class torrentParser(object): # 构造函数 def __init__(self,filePathname): self.filePathname=filePathname with open(filePathname,'rb') as fObj: self.fileDic=bdecode(fObj.read()) # 得到文件路径名 def getFilepathname(self): return self.filePathname # 得到所有键值 def getKeys(self): return self.fileDic.keys() # 得到全部内容 def getAllContent(self): return self.fileDic; # 得到文件结构 def getStructure(self): retval='' layer=0 for key in self.fileDic.keys(): value=self.fileDic[key] retval=retval+self.getNextNode(key,value,layer) return retval # 向下递归查找文件结构, def getNextNode(self,key,value,layer): retval=""; layer+=1 if type(value)==type({}) and len(value.keys())>0: for i in range(1,layer+1): retval=retval+" " retval=retval+str(key)+" " for k in value.keys(): v=value[k] retval=retval+ self.getNextNode(k,v,layer) elif type(value)==type([]) and len(value)>0: for i in range(1,layer+1): retval=retval+" " retval=retval+str(key)+" " arr=value for it in arr: if type(it)==type({}) and len(it.keys())>0: for nk in it.keys(): nv=it[nk] retval=retval+''+self.getNextNode(nk,nv,layer) else: for i in range(1,layer+1): retval=retval+" " showValue=str(value)[0:50] # 显示的值 retval=retval+str(key)+":"+showValue+" " return retval # 获得tracker服务器的URL def getAnnounce(self): if 'announce' in self.fileDic: return self.fileDic['announce'].decode('utf-8','ignore') return '' # 获得tracker服务器的URL列表 def getAnnounceList(self): retval=[] if 'announce-list' in self.fileDic: arr=self.fileDic['announce-list'] for childArr in arr: if type(childArr)==type([]): for item in childArr: retval.append(item.decode('utf-8','ignore')) else: retval.append(childArr.decode('utf-8','ignore')) return retval # 得到制作日期 def getCreateTime(self): if 'creation date' in self.fileDic: unixTimestamp=self.fileDic['creation date'] firmalTime = time.localtime(unixTimestamp) dt = time.strftime('%Y-%m-%d %H:%M:%S', firmalTime) return dt else: return '' # 获得编码方式 def getEncoding(self): if 'encoding' in self.fileDic: return self.fileDic['encoding'].decode('utf-8','ignore') return '' # 是否包含多个文件 def hasMultiFiles(self): if 'files' in self.fileDic['info']: return True else: return False # 获得文件名 def getTitle(self): arr=[] info = self.fileDic['info'] if 'name.utf-8' in info: arr=info['name.utf-8'] else: arr = info['name'] #print(str(arr)) return arr.decode('utf-8','ignore') # 获得备注(可选项) def getComment(self): if 'comment' in self.fileDic: return self.fileDic['comment'].decode('utf-8','ignore') return '' # 获得创建者(可选项) def getCreatedBy(self): if 'created by' in self.fileDic: return self.fileDic['created by'].decode('utf-8','ignore') return '' # 多文件的情况下，得到多个文件的个数 def getFileCount(self): return len(self.fileDic['info']['files']) # 多文件的情况下，获得所有文件 def getFiles(self): files=[] for item in self.fileDic['info']['files']: file={} for key in item.keys(): value=item.get(key) if key=='path': #print('1.'+str(value)) #print('10.'+str(value[0])) path=value[0].decode('utf8','ignore') value=path if key=='path.utf-8': #print('2.'+str(value)) #print('20.'+str(value[0])) path=value[0].decode('utf8','ignore') value=path file[key]=value files.append(file) return files # 单文件情况下，取文件名 def getSingleFileName(self): return self.getTitle(); # 单文件情况下，取文件长度 def getSingleFileLength(self): return self.fileDic['info']['length'] # 单文件情况下，取文件md5sum def getSingleFileMd5sum(self): if 'md5sum' in self.fileDic['info']: return self.fileDic['info']['md5sum'].decode('utf-8','ignore') else: return '' # 单文件情况下，取文件长度 def getSingleFilePieceLength(self): return self.fileDic['info']['piece length'] # 单文件情况下，取文件pieces def getSingleFilePieces(self): return self.fileDic['info']['pieces'] # 得到文件简报 def getBrief(self): retval="" retval=retval+"File:"+self.filePathname+" " retval=retval+"announce:"+self.getAnnounce()+" " arr=self.getAnnounceList() if(len(arr)>0): retval=retval+"announce list:"+" " for it in arr: retval=retval+" "+it+" " retval=retval+"Create time:"+self.getCreateTime()+" " retval=retval+"Ecoding:"+self.getEncoding()+" " retval=retval+"Title:"+self.getTitle()+" " retval=retval+"Comment:"+self.getComment()+" " retval=retval+"Created by:"+self.getCreatedBy()+" " hasMulti=self.hasMultiFiles() retval=retval+"has multi files:"+str(hasMulti)+" " if hasMulti==True: retval=retval+"[多文件结构]"+" " retval=retval+"包含文件个数为:"+str(self.getFileCount())+" " retval=retval+"Files:"+" " files=self.getFiles(); index=1 for item in files: retval=retval+" file#"+str(index)+" " for key in item.keys(): value=item.get(key) retval=retval+" "+str(key)+":"+str(value)+" " retval=retval+" " index=index+1 else: retval=retval+"[单文件结构]"+" " retval=retval+"文件名为:"+self.getSingleFileName()+" " retval=retval+"文件长度:"+str(self.getSingleFileLength())+"byte " retval=retval+"文件md5sum:"+self.getSingleFileMd5sum()+" " retval=retval+"文件块长度:"+str(self.getSingleFilePieceLength())+"byte " return retval # 得到磁力链 def getMegnet(self): info=self.fileDic['info'] arr=bencode(info); diggest=hashlib.sha1(arr).digest() b32hash=base64.b32encode(diggest) return 'magnet:?xt=urn:btih:'+str(b32hash,'utf-8') #------------------------------------- # 入口 #------------------------------------- def main(): tp=torrentParser(filePathname='./5.torrent') print('文件名='+tp.getFilepathname()) print('文件结构: '+tp.getStructure()) print('文件简报: '+str(tp.getBrief())) #print('文件内容: '+str(tp.getAllContent())) print('磁力链: '+str(tp.getMegnet())) # Start main()
输出：
C:Usershorn1Desktoppython46-torrentParser>python torrentParser.py 文件名=./5.torrent 文件结构: announce:b'udp://tracker.openbittorrent.com:80' announce-list comment:b'This torrent is downloaded from btkitty.me , sto creation date:1496866967 encoding:b'UTF-8' info length:1385343970 name:b'SIRO-1690 xa4xcaxa4xca xccxd2xb9xc8xbb name.utf-8:b'SIRO-1690 xe3x81xaaxe3x81xaa xe6xa1x83 piece length:1048576 pieces:b'Sx06xa4x18xedx9dxa5xd9rxc4^Ox1bxefsxe publisher:b'btkitty.me' publisher-url:b'http://btkitty.me' 文件简报: File:./5.torrent announce:udp://tracker.openbittorrent.com:80 announce list: udp://open.demonii.com:1337 udp://tracker.coppersurfer.tk:6969 udp://tracker.leechers-paradise.org:6969 udp://tracker.blackunicorn.xyz:6969 Create time:2017-06-08 04:22:47 Ecoding:UTF-8 Title:SIRO-1690 なな 桃谷绘里香 桃谷エリカ Erika Momotani20歳 豆腐屋.wmv Comment:This torrent is downloaded from btkitty.me , storebt.com Created by: has multi files:False [单文件结构] 文件名为:SIRO-1690 なな 桃谷绘里香 桃谷エリカ Erika Momotani20歳 豆腐屋.wmv 文件长度:1385343970byte 文件md5sum: 文件块长度:1048576byte 磁力链: magnet:?xt=urn:btih:H5X5LYB3CPDSUJH4WKVKKTDI5QQGY4JH
magnet:?xt=urn:btih:H5X5LYB3CPDSUJH4WKVKKTDI5QQGY4JH 就是要获得的磁力链，拷贝到迅雷试试看吧。
2018年5月13日