WebHelpers / unfinished / overwrite_error.py

import os

class OverwriteError(EnvironmentError):
    """Refusing to overwrite an existing file or directory.
    >> raise OverwriteError("OUTPUT")
    OverwriteError: not overwriting file '/home/me/OUTPUT'
    >> raise OverwriteError("/tmp", "output")
    OverwriteError: not overwriting output directory '/tmp'

    It will use the ``os`` module to get the full path and determine
    whether the existing file is a directory.

    def __init__(self, filename, what=""):
        self.filename = filename
        self.what = what
        filetype = "file"
            if os.path.isdir(filename):
                filetype = "directory"
        except IOError:
        words = []
        words.append("not overwriting")
        if what:
        if filetype:
        words.append("'%s'" % os.path.abspath(filename))
        msg = " ".join(words)
        EnvironmentError.__init__(self, msg)
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