fix(py): os.readlink raises not just FileNotFoundEror,OSError...

fold to use tryOsOp for listdir,readlink

Author: litlighilit

src/pylib/Lib/os_impl/listdirx.nim

@@ -5,9 +5,6 @@ import ./listcommon
 
 proc listdir*[T](p: PathLike[T] = "."): PyList[T] =
   result = newPyList[T]()
-  try:
+  p.tryOsOp:
     for i in walkDir($p, relative=true, checkDir=true):
       result.append i.path
-  except OSError as e:
-    let oserr = e.errorCode.OSErrorCode
-    p.raiseExcWithPath(oserr)

src/pylib/Lib/os_impl/posix_like/links.nim

@@ -242,13 +242,8 @@ else:
 
 
   proc readlink*[T](path: PathLike[T]): T =
-    try: result = mapPathLike[T] readlinkImpl $path
-    except OSError as e:
-      let errCode = e.errorCode.OSErrorCode
-      if errCode.isNotFound:
-        path.raiseFileNotFoundError()
-      # XXX: may be other errors?
-      raise
+    tryOsOp(path):
+      result = mapPathLike[T] readlinkImpl $path
 
   when defined(windows):
     proc check_dir(src_resolved: string): bool =

src/pylib/Lib/os_impl/posix_like/scandirImpl.nim

@@ -150,13 +150,10 @@ template scandirImpl(path){.dirty.} =
     dir.closeSync
 
   else:
-    try:
+    tryOsOp(spath):
       for t in walkDir(spath, relative=true, checkDir=true):
         let de = newDirEntry[T](name = t.path, dir = spath, kind = t.kind)
         yield de
-    except OSError as e:
-      let oserr = e.errorCode.OSErrorCode
-      path.raiseExcWithPath(oserr)
 
 iterator scandir*[T](path: PathLike[T]): DirEntry[T] = scandirImpl path
 iterator scandirIter*[T](path: T): DirEntry[T]{.closure.} =