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Closes #1492704: Make shutil.copyfile() raise a distinct SameFileError

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Patch by Atsuo Ishimoto.
This commit is contained in:
Hynek Schlawack 2012-10-07 12:49:58 +02:00
parent 09c61bef2d
commit 4865376c44
4 changed files with 35 additions and 5 deletions
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8
Lib/shutil.py
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@ -42,6 +42,9 @@ __all__ = ["copyfileobj", "copyfile", "copymode", "copystat", "copy", "copy2",
class Error(EnvironmentError):
pass
class SameFileError(Error):
"""Raised when source and destination are the same file."""
class SpecialFileError(EnvironmentError):
"""Raised when trying to do a kind of operation (e.g. copying) which is
not supported on a special file (e.g. a named pipe)"""
@ -90,7 +93,7 @@ def copyfile(src, dst, *, follow_symlinks=True):
"""
if _samefile(src, dst):
raise Error("`%s` and `%s` are the same file" % (src, dst))
raise SameFileError("{!r} and {!r} are the same file".format(src, dst))
for fn in [src, dst]:
try:
@ -215,6 +218,9 @@ def copy(src, dst, *, follow_symlinks=True):
If follow_symlinks is false, symlinks won't be followed. This
resembles GNU's "cp -P src dst".
If source and destination are the same file, a SameFileError will be
raised.
"""
if os.path.isdir(dst):
dst = os.path.join(dst, os.path.basename(src))