Question

下面我已经在我列出整个文件夹的代码中包含了我当前的尝试，运行文件并下载它们。但是，此方法不支持迭代子文件夹和文件夹。

 def handleDownload(block):
    file.write(block)

ddir='U:/Test Folder'
filedestination = 'U:/SWEModelConstruction/UnmaskedData'
t1= []
t2= []
t3= []
os.chdir(ddir)
ftp = FTP('sidads.colorado.edu')
ftp.login()

print ('Logging in.')

directory = '/pub/DATASETS/NOAA/G02158/unmasked/'

print ('Changing to ' + directory)
ftp.cwd(directory)
ftp.retrlines('LIST')

print ('Accessing files')

filenames = ftp.nlst() # get filenames within the directory
print (filenames)

for filename in filenames:
    if filename not in ['.', '..']:
        #Parse values from filename to use in os.path.join
        for fname in filenames:
            t1 = fname[16:20]
            t2 = fname[20:22]
            t3 = fname[22:24]
            t4 = fname[16:24]

            if not t1: continue
        #use parsed values from filenamee to create folder and file pathss
        local_folder = os.path.join(filedestination, t1,t2,t3)
        local_filename = os.path.join(filedestination, t1,t2,t3,filename)
        local_dat = os.path.join(filedestination, t1,t2,t3,'zz_ssmv11034tS__T0001TTNATS'+t4+'05HP001.dat.gz')
        local_hdr = os.path.join(filedestination, t1,t2,t3,'zz_ssmv11034tS__T0001TTNATS'+t4+'05HP001.Hdr.gz')
        hdrfile = ('zz_ssmv11034tS__T0001TTNATS'+t4+'05HP001.Hdr')
        print (local_folder)
        print (local_filename)
        #check if folder for file exists and wether or not you have already it
        if os.path.exists(local_folder) and not os.path.isfile(local_filename):
            with open(local_filename, 'wb') as f_output:
                ftp.retrbinary('RETR '+ filename, f_output.write)
                ftp.quit()

Answer 1

我指导你Alvin's Big Data Notebook。你会在那里找到一个使用pysftp和walktree的例子。我不知道你正在使用什么FTP库，但如果你使用的是pysftp，这个例子应该有所帮助。关键是要了解如何使用walktree。

遍历文件夹和子文件夹以获取每个目录FTP Python中的文件

1 个答案: