def change_prefix(filename, dst_prefix):
prefixes = [sys.prefix]
if is_darwin:
prefixes.extend((
os.path.join("/Library/Python", sys.version[:3], "site-packages"),
os.path.join(sys.prefix, "Extras", "lib", "python"),
os.path.join("~", "Library", "Python", sys.version[:3], "site-packages"),
# Python 2.6 no-frameworks
os.path.join("~", ".local", "lib","python", sys.version[:3], "site-packages"),
# System Python 2.7 on OSX Mountain Lion
os.path.join("~", "Library", "Python", sys.version[:3], "lib", "python", "site-packages")))
if hasattr(sys, 'real_prefix'):
prefixes.append(sys.real_prefix)
if hasattr(sys, 'base_prefix'):
prefixes.append(sys.base_prefix)
prefixes = list(map(os.path.expanduser, prefixes))
prefixes = list(map(os.path.abspath, prefixes))
# Check longer prefixes first so we don't split in the middle of a filename
prefixes = sorted(prefixes, key=len, reverse=True)
filename = os.path.abspath(filename)
for src_prefix in prefixes:
if filename.startswith(src_prefix):
_, relpath = filename.split(src_prefix, 1)
if src_prefix != os.sep: # sys.prefix == "/"
assert relpath[0] == os.sep
relpath = relpath[1:]
return join(dst_prefix, relpath)
assert False, "Filename %s does not start with any of these prefixes: %s" % \
(filename, prefixes)
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