shutil.copyfile doesn't overwrite exiting file #50
Description
On CPython 3.6 shutil.copyfile overwrites even if the file exits.
GraalPython doesn't.
File "copyfile.py", line 19, in <module>
copyfile(a,b)
File "/u/yokohama55/people/ryutas/workspace/packages/graal/graal/vm/mxbuild/linux-amd64/GRAALVM_CMP_GU_GVM_INS_JS_LIBPOLY_POLY_POLYNATIVE_PRO_PYN_RGX_SLG_SVM_TFL_VVM/graalvm-cmp-gu-gvm-ins-js-libpoly-poly-polynative-pro-pyn-rgx-slg-svm-tfl-vvm-1.0.0-rc12-dev/jre/languages/python/lib-python/3/shutil.py", line 104, in copyfile
raise SameFileError("{!r} and {!r} are the same file".format(src, dst))
shutil.SameFileError: <unprintable SameFileError object>
import os
from shutil import copyfile
a = os.path.join('.', 'a')
b = os.path.join('.', 'b')
if os.path.exists(a):
os.remove(a)
if os.path.exists(b):
os.remove(b)
open(a, 'w')
copyfile(a,b)
# should overwrite 'b' by 'a'
copyfile(a,b)