Expanding the *
(globbing) is a function of your shell, bash for example. Therefore you'd have to use the keyword argument shell=True
in your subprocess.Popen
call.
However, for this case I'd strongly suggest to use shutil.copytree instead.
(First of all, because it's much simpler (see Zen of Python) and less error-prone. Dealing with errors is much cleaner, you get nice exceptions including a list of errors (for multi file operations like yours), and you don't have to deal with spawning a subprocess and communicating with it. Second, it's an unnecessary waste of resources to fork a child process if you don't need to. Other issues include quoting / escaping and possibly introducing security vulnerabilities into your code if you fail to properly sanitize user input.)
For example:
from shutil import copytree
from shutil import Error
try:
copytree('dir_a', 'dir_b')
except (Error, OSError), e:
print "Attempt to copy failed: %s" % e
Also, you shouldn't build filesystem paths by concatenating strings together, but instead use os.path.join(). That will use the correct directory separator (os.sep
) for the current OS and allow you to easily write portable code.
Example:
>>> import os
>>> os.path.join('/usr/lib', 'python2.7')
'/usr/lib/python2.7'
Note: os.path.join
still only does (smart) string manipulation - it doesn't care if that path is accessible or even exists.
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