Add unspecified-encoding checker #3826 (#4753)

* Add unspecified-encoding checker #3826
This adds an unspecified-encoding checker that adds a warning
whenever open() is called without an explicit encoding argument.
This closes #3826

* Update tests to conform to unspecified-encoding
With addition of the unspecified-encoding checker calls of open()
need an encoding argument.
Where necessary this argument has been added, or the message has been
disabled.
This also includes small linting changes to a small number
of tests. Their test-data has been updated to reflect new line numbers.

* Update scripts to conform to unspecified-encoding
With addition of the unspecified-encoding checker calls of open()
need an encoding argument.
Where necessary this argument has been added.

* Update pylint to conform to unspecified-encoding
With addition of the unspecified-encoding checker calls of open()
need an encoding argument.
Where necessary this argument has been added.

Co-authored-by: Marc Mueller <30130371+cdce8p@users.noreply.github.com>
Co-authored-by: Marc Mueller <30130371+cdce8p@users.noreply.github.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/pylint/checkers/spelling.py b/pylint/checkers/spelling.py
index e2b6df189..1b0a7f653 100644
--- a/pylint/checkers/spelling.py
+++ b/pylint/checkers/spelling.py
@@ -318,7 +318,7 @@ class SpellingChecker(BaseTokenChecker):
                 dict_name, self.config.spelling_private_dict_file
             )
             self.private_dict_file = open(  # pylint: disable=consider-using-with
-                self.config.spelling_private_dict_file, "a"
+                self.config.spelling_private_dict_file, "a", encoding="utf-8"
             )
         else:
             self.spelling_dict = enchant.Dict(dict_name)