pre-commit upgrade

.pre-commit-config.yaml

@@ -1,28 +1,28 @@
 ---
 repos:
   - repo: https://github.com/asottile/pyupgrade
-    rev: v2.7.2
+    rev: v2.29.1
     hooks:
       - id: pyupgrade
         args: ["--py36-plus"]
   - repo: https://github.com/asottile/reorder_python_imports
-    rev: v2.3.5
+    rev: v2.6.0
     hooks:
       - id: reorder-python-imports
         args: ["--application-directories", "src"]
   - repo: https://github.com/psf/black
-    rev: 20.8b1
+    rev: 21.12b0
     hooks:
       - id: black
   - repo: https://gitlab.com/pycqa/flake8
-    rev: 3.8.4
+    rev: 3.9.2
     hooks:
       - id: flake8
         additional_dependencies:
           - flake8-bugbear
           - flake8-implicit-str-concat
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v3.2.0
+    rev: v4.0.1
     hooks:
       - id: check-byte-order-marker
       - id: trailing-whitespace

src/wtforms/widgets/core.py

@@ -79,7 +79,7 @@ def html_params(**kwargs):
         elif v is False:
             pass
         else:
-            params.append('{}="{}"'.format(str(k), escape(v)))
+            params.append(f'{str(k)}="{escape(v)}"')
     return " ".join(params)
 
 
@@ -103,7 +103,7 @@ def __init__(self, html_tag="ul", prefix_label=True):
 
     def __call__(self, field, **kwargs):
         kwargs.setdefault("id", field.id)
-        html = ["<{} {}>".format(self.html_tag, html_params(**kwargs))]
+        html = [f"<{self.html_tag} {html_params(**kwargs)}>"]
         for subfield in field:
             if self.prefix_label:
                 html.append(f"<li>{subfield.label} {subfield()}</li>")
@@ -362,9 +362,7 @@ def render_option(cls, value, label, selected, **kwargs):
         options = dict(kwargs, value=value)
         if selected:
             options["selected"] = True
-        return Markup(
-            "<option {}>{}</option>".format(html_params(**options), escape(label))
-        )
+        return Markup(f"<option {html_params(**options)}>{escape(label)}</option>")
 
 
 class Option: