Bump mako from 1.1.6 to 1.2.0 (#1684)

* Bump mako from 1.1.6 to 1.2.0

Bumps [mako](https://github.com/sqlalchemy/mako) from 1.1.6 to 1.2.0.
- [Release notes](https://github.com/sqlalchemy/mako/releases)
- [Changelog](https://github.com/sqlalchemy/mako/blob/main/CHANGES)
- [Commits](https://github.com/sqlalchemy/mako/commits)

---
updated-dependencies:
- dependency-name: mako
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* Update mako==1.2.0

* Update MarkupSafe==2.1.1

* Add importlib-metadata==4.11.3

* Update requirements.txt

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: JonnyWong16 <9099342+JonnyWong16@users.noreply.github.com>

[skip ci]

lib/mako/pygen.py

@@ -1,5 +1,5 @@
 # mako/pygen.py
-# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file>
+# Copyright 2006-2021 the Mako authors and contributors <see AUTHORS file>
 #
 # This module is part of Mako and is released under
 # the MIT License: http://www.opensource.org/licenses/mit-license.php
@@ -11,7 +11,7 @@ import re
 from mako import exceptions
 
 
-class PythonPrinter(object):
+class PythonPrinter:
     def __init__(self, stream):
         # indentation counter
         self.indent = 0
@@ -96,18 +96,19 @@ class PythonPrinter(object):
         is_comment = line and len(line) and line[0] == "#"
 
         # see if this line should decrease the indentation level
-        if not is_comment and (not hastext or self._is_unindentor(line)):
-
-            if self.indent > 0:
-                self.indent -= 1
-                # if the indent_detail stack is empty, the user
-                # probably put extra closures - the resulting
-                # module wont compile.
-                if len(self.indent_detail) == 0:
-                    raise exceptions.SyntaxException(
-                        "Too many whitespace closures"
-                    )
-                self.indent_detail.pop()
+        if (
+            not is_comment
+            and (not hastext or self._is_unindentor(line))
+            and self.indent > 0
+        ):
+            self.indent -= 1
+            # if the indent_detail stack is empty, the user
+            # probably put extra closures - the resulting
+            # module wont compile.
+            if len(self.indent_detail) == 0:
+                # TODO: no coverage here
+                raise exceptions.MakoException("Too many whitespace closures")
+            self.indent_detail.pop()
 
         if line is None:
             return
@@ -167,13 +168,10 @@ class PythonPrinter(object):
         # if the current line doesnt have one of the "unindentor" keywords,
         # return False
         match = re.match(r"^\s*(else|elif|except|finally).*\:", line)
-        if not match:
-            return False
-
-        # whitespace matches up, we have a compound indentor,
+        # if True, whitespace matches up, we have a compound indentor,
         # and this line has an unindentor, this
         # is probably good enough
-        return True
+        return bool(match)
 
         # should we decide that its not good enough, heres
         # more stuff to check.
@@ -218,11 +216,7 @@ class PythonPrinter(object):
 
         current_state = self.backslashed or self.triplequoted
 
-        if re.search(r"\\$", line):
-            self.backslashed = True
-        else:
-            self.backslashed = False
-
+        self.backslashed = bool(re.search(r"\\$", line))
         triples = len(re.findall(r"\"\"\"|\'\'\'", line))
         if triples == 1 or triples % 2 != 0:
             self.triplequoted = not self.triplequoted