问题描述
我无法在 Python 中对我的文件设置 ctime/mtime.首先我通过 FTP 获取文件的原始时间戳.
I cannot set ctime/mtime on my file within Python. First I get the original timestamp of the file through FTP.
我唯一想要的就是使用 ftplib 在我下载的文件上保留原始时间戳.
The only thing I want is to keep the original timestamps on my downloaded files using the ftplib.
def getFileTime(ftp,name): try : modifiedTime = ftp.sendcmd('MDTM ' + name) filtid = datetime.strptime(modifiedTime[4:], "%Y%m%d%H%M%S").strftime("%d %B %Y %H:%M:%S") return filtid except : return False
然后我下载文件
def downloadFile(ftp, fileName) : try: ftp.retrbinary('RETR %s' % fileName,open(fileName, 'wb').write) except ftplib.error_perm: print 'ERROR: cannot read file "%s"' % fileName os.unlink(fileName) return False else: print '*** Downloaded "%s" to CWD' % fileName return True
我想为下载的文件设置原始时间戳
and the I want to set the original timestamp to the downloaded file
def modifyTimestapToOriginal(fileName, orgTime): #try: os.utime(fileName, orgTime) fileName.close() # return True # except: # return False
这就是我尝试的方式
ftp, files = f.loginftp(HOST,user,passwd,remoteDir) for i in files : if not f.isDir(ftp,i) : fixTime = datetime.strptime(varfixtime, "%d-%m-%Y %H:%M:%S") ftime = f.getFileTime(ftp,i) if ftime >= fixTime : print (ftime) os.chdir('c:/testdownload') f.downloadFile(ftp,i) settime = ftime.timetuple() print "settime '%s'" % settime #f.modifyTimestapToOriginal(i, settime)
错误是:
os.utime(fileName, orgTime) TypeError: utime() arg 2 must be a tuple (atime, mtime)
谁能帮我给我一个更好的方法来保留原始文件时间戳或如何将 ftime 转换为 os.utime 的可用元组
Can anyone help me either give me a better way to keep the original file timestamps or how to convert the ftime to a usable tuple for os.utime
推荐答案
来自 os.utime() 文档:
From the os.utime() documentation:
否则,times 必须是数字的二元组,格式为 (atime, mtime),分别用于设置访问时间和修改时间.
Otherwise, times must be a 2-tuple of numbers, of the form (atime, mtime) which is used to set the access and modified times, respectively.
你没有给它一个元组.在这种情况下,只需将 atime 和 mtime 都设置为相同的值:
You are not giving it a tuple. In this case, just set both atime and mtime to the same value:
os.utime(fileName, (orgTime, orgTime))
fileName 是一个字符串,所以 fileName.close() 不起作用(你会得到一个属性错误),只需删除该行.
fileName is a string, so fileName.close() won't work (you'll get an attribute error), just drop that line.
orgTime 必须是整数;你给它一个时间元组;使用 time.mktime 将其转换为以秒为单位的时间戳():
orgTime must be an integer; you are giving it a time tuple; convert it to a timestamp in seconds since the epoch with time.mktime():
settime = time.mktime(ftime.timetuple())