Python fabric Determines whether a file exists at the end of the remote and handles it __python

General use of fabric, mostly with the remote interaction, and in the interaction, in addition to the logic of simple code, time is also accompanied by the transmission of files, and there may be a lot of files in the file.

Whether we can make a judgment, if the file exists, then we do not upload, look at the code

# for a test
@task
@roles ("Mgmt")
def Test ():
    if Int (run ("[E '/etc/passwd1 '] && echo 11 | | echo ") = = one:
        print" Yes, file exists! "
    else:
        print "No, File not exists!"