Eliminating an element in a for loop

Question

Eliminating an element in a for loop

I am trying to find the total size of the root directory on an FTP server. However, I don't have access to one of the directories in the root.

I want to use this function to sum the sizes of directories at the root:

size = 0
for filename in ftp.nlst("."):
    ftp.cwd(filename)
    size += ftp.size(".")    
print(size)

This generates an error:

ftplib.error_perm: 550 Could not get file size.

I cannot find any documentation on excluding an element from a for loop.

+3

python for-loop ftp ftplib

Matt houchin 30 jul. 17 at 14:42

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1 answer

AChampion · Accepted Answer · 2017-07-30T14:46:28+0000

Just catch the exception and pass

or continue

, for example:

for filename in ftp.nlst("."):
    try:
        ftp.cwd(filename)
        size += ftp.size(".")    
    except ftplib.error_perm:
        pass
print(size)

Eliminating an element in a for loop

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