[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

ldapauthenticator/ldapauthenticator.py

@@ -4,17 +4,20 @@
 import ldap3
 from jupyterhub.auth import Authenticator
 from ldap3.utils.conv import escape_filter_chars
-from traitlets import Bool, Int, List, Unicode, Union, UseEnum, validate, observe
+from traitlets import Bool, Int, List, Unicode, Union, UseEnum, observe, validate
+
 
 class TlsStrategy(enum.Enum):
     """
     Represents a SSL/TLS strategy for LDAPAuthenticator to use when interacting
     with the LDAP server.
     """
+
     before_bind = 1
     on_connect = 2
     insecure = 3
 
+
 class LDAPAuthenticator(Authenticator):
     server_address = Unicode(
         config=True,
@@ -56,13 +59,13 @@ def _observe_use_ssl(self, change):
         if change.new:
             self.tls_strategy = TlsStrategy.on_connect
             self.log.warning(
-                'LDAPAuthenticator.use_ssl is deprecated in 2.0 in favor of LDAPAuthenticator.tls_strategy, '
+                "LDAPAuthenticator.use_ssl is deprecated in 2.0 in favor of LDAPAuthenticator.tls_strategy, "
                 'instead of configuring use_ssl=True, configure use tls_strategy="on_connect" from now on.'
             )
         else:
             self.log.warning(
-                'LDAPAuthenticator.use_ssl is deprecated in 2.0 in favor of LDAPAuthenticator.tls_strategy, '
-                'you can stop configuring use_ssl=False from now on as doing so has no effect.'
+                "LDAPAuthenticator.use_ssl is deprecated in 2.0 in favor of LDAPAuthenticator.tls_strategy, "
+                "you can stop configuring use_ssl=False from now on as doing so has no effect."
             )
 
     tls_strategy = UseEnum(
@@ -350,15 +353,20 @@ def get_connection(self, userdn, password):
         elif self.tls_strategy == TlsStrategy.before_bind:
             use_ssl = False
             auto_bind = ldap3.AUTO_BIND_TLS_BEFORE_BIND
-        else: # TlsStrategy.insecure
+        else:  # TlsStrategy.insecure
             use_ssl = False
             auto_bind = ldap3.AUTO_BIND_NO_TLS
 
         server = ldap3.Server(
-            self.server_address, port=self.server_port, use_ssl=use_ssl,
+            self.server_address,
+            port=self.server_port,
+            use_ssl=use_ssl,
         )
         conn = ldap3.Connection(
-            server, user=userdn, password=password, auto_bind=auto_bind,
+            server,
+            user=userdn,
+            password=password,
+            auto_bind=auto_bind,
         )
         return conn