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fix types in os.path (#1363)

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In Python 2, doing
    os.path.join(u"foo", "bar")
is actually legal, and returns a unicode string.
Also os.path.relpath always returns the type of its first argument.

(The solution is not perfect -- e.g.
    os.path.join("a", "b", "c", "d", u"e")
will still result in a type error. )
This commit is contained in:
Matthias Kramm
2017-05-31 10:43:26 -07:00
committed by Guido van Rossum
parent 2b79108ddc
commit 6f07424246
1 changed files with 15 additions and 2 deletions
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17
stdlib/2/os/path.pyi
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@@ -55,7 +55,20 @@ def isdir(path: _PathType) -> bool: ...
def islink(path: _PathType) -> bool: ...
def ismount(path: _PathType) -> bool: ...
def join(path: AnyStr, *paths: AnyStr) -> AnyStr: ...
# Make sure signatures are disjunct, and allow combinations of bytes and unicode.
# (Since Python 2 allows that, too)
# Note that e.g. os.path.join("a", "b", "c", "d", u"e") will still result in
# a type error.
@overload
def join(__p1: bytes, *p: bytes) -> bytes: ...
@overload
def join(__p1: Text, *p: _PathType) -> Text: ...
@overload
def join(__p1: bytes, __p2: Text, *p: _PathType) -> Text: ...
@overload
def join(__p1: bytes, __p2: bytes, __p3: Text, *p: _PathType) -> Text: ...
@overload
def join(__p1: bytes, __p2: bytes, __p3: bytes, __p4: Text, *p: _PathType) -> Text: ...
def normcase(path: AnyStr) -> AnyStr: ...
def normpath(path: AnyStr) -> AnyStr: ...
@@ -63,7 +76,7 @@ if sys.platform == 'win32':
def realpath(path: AnyStr) -> AnyStr: ...
else:
def realpath(filename: AnyStr) -> AnyStr: ...
def relpath(path: AnyStr, start: AnyStr = ...) -> AnyStr: ...
def relpath(path: AnyStr, start: _PathType = ...) -> AnyStr: ...
def samefile(path1: _PathType, path2: _PathType) -> bool: ...
def sameopenfile(fp1: int, fp2: int) -> bool: ...