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Added 'grok_environment_error()' function to deal with the various

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forms that IOError and OSError can take (taken from core.py).
This commit is contained in:
Greg Ward 2000-06-17 02:16:46 +00:00
parent 039accfb2c
commit e905513be0
1 changed files with 20 additions and 0 deletions
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20
Lib/distutils/util.py
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@ -154,3 +154,23 @@ def subst_vars (str, local_vars):
# subst_vars ()
def grok_environment_error (exc, prefix="error: "):
"""Generate a useful error message from an EnvironmentError (IOError or
OSError) exception object. Handles Python 1.5.1 and 1.5.2 styles, and
does what it can to deal with exception objects that don't have a
filename (which happens when the error is due to a two-file operation,
such as 'rename()' or 'link()'. Returns the error message as a string
prefixed with 'prefix'.
"""
# check for Python 1.5.2-style {IO,OS}Error exception objects
if hasattr (exc, 'filename') and hasattr (exc, 'strerror'):
if exc.filename:
error = prefix + "%s: %s" % (exc.filename, exc.strerror)
else:
# two-argument functions in posix module don't
# include the filename in the exception object!
error = prefix + "%s" % exc.strerror
else:
error = prefix + str(exc[-1])
return error