在os.utime中使用python转换datetime。

I cannot set ctime/mtime on my file within python. First I get the orginal timestamp of the file through ftp

我不能在python中对我的文件设置ctime/mtime。首先，我通过ftp获得文件的原始时间戳

The only thing I want is to keep the original timestamps on my downloaded files using the ftplib.

我只想使用ftplib保留下载文件的原始时间戳。

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

Then I download the file

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

and the I want to set the original timestamp to the downloaded file

我想将原始的时间戳设置为下载的文件

def modifyTimestapToOriginal(fileName, orgTime):
    #try:
            os.utime(fileName, orgTime)
            fileName.close()
     #       return True
   # except:

    #        return False

This is how I am trying to do it

我就是这么做的

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)

The error is :

错误的是:

    os.utime(fileName, orgTime)
TypeError: utime() arg 2 must be a tuple (atime, mtime)

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

谁能帮我一个更好的方法来保存原始的文件时间戳，或者如何将ftime转换为os.utime的一个可用元组

1 个解决方案

#1

From the os.utime() documentation:

从os.utime()文档:

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.

否则，时间必须是数字的2元组，其形式(atime, mtime)用于分别设置访问和修改时间。

You are not giving it a tuple. In this case, just set both atime and mtime to the same value:

你没有给它一个元组。在这种情况下，只需将atime和mtime设为相同的值:

os.utime(fileName, (orgTime, orgTime))

fileName is a string, so fileName.close() won't work (you'll get an attribute error), just drop that line.

文件名是一个字符串，因此fileName.close()不会起作用(您将会得到一个属性错误)，只需删除该行。

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():

组织时间必须是整数;你给它一个时间元组;将其转换为时间戳，以秒为单位，以秒为单位。

settime = time.mktime(ftime.timetuple())

#1