TempFS.__enter__ returns object of type FS instead of TempFS

[dsoulis]

Example

with TempFS() as temp_fs:
 temp_fs_sys_path = temp_fs.root_path # raises AttributeError since temp_fs is of type FS

To get around this you need to do:
temp_fs_root_sys_path = temp_fs.getsyspath('')

There may be other OSFS/TempFS specific attributes that may fail due to this.
TempFS.__enter__ return type should be TempFS, not FS.

[lurch]

temp_fs.root_path

Neither https://docs.pyfilesystem.org/en/latest/reference/tempfs.html nor https://docs.pyfilesystem.org/en/latest/reference/osfs.html document the .root_path attribute as part of the "public API" ? In fact the example at https://docs.pyfilesystem.org/en/latest/reference/tempfs.html#fs.tempfs.TempFS.close shows

syspath = tmp_fs.getsyspath("/")