Prefer f-strings

Author: jaraco

importlib_metadata/__init__.py

@@ -52,8 +52,7 @@ class PackageNotFoundError(ModuleNotFoundError):
     """The package was not found."""
 
     def __str__(self):
-        tmpl = "No package metadata was found for {self.name}"
-        return tmpl.format(**locals())
+        return f"No package metadata was found for {self.name}"
 
     @property
     def name(self):
@@ -391,7 +390,7 @@ def __init__(self, spec):
         self.mode, _, self.value = spec.partition('=')
 
     def __repr__(self):
-        return '<FileHash mode: {} value: {}>'.format(self.mode, self.value)
+        return f'<FileHash mode: {self.mode} value: {self.value}>'
 
 
 class Distribution:
@@ -575,13 +574,13 @@ def _convert_egg_info_reqs_to_simple_reqs(sections):
         """
 
         def make_condition(name):
-            return name and 'extra == "{name}"'.format(name=name)
+            return name and f'extra == "{name}"'
 
         def parse_condition(section):
             section = section or ''
             extra, sep, markers = section.partition(':')
             if extra and markers:
-                markers = '({markers})'.format(markers=markers)
+                markers = f'({markers})'
             conditions = list(filter(None, [markers, make_condition(extra)]))
             return '; ' + ' and '.join(conditions) if conditions else ''
 

importlib_metadata/_compat.py

@@ -76,10 +76,10 @@ class PyPy_repr:
     def __compat_repr__(self):  # pragma: nocover
         def make_param(name):
             value = getattr(self, name)
-            return '{name}={value!r}'.format(**locals())
+            return f'{name}={value!r}'
 
         params = ', '.join(map(make_param, self._fields))
-        return 'EntryPoint({params})'.format(**locals())
+        return f'EntryPoint({params})'
 
     if affected:  # pragma: nocover
         __repr__ = __compat_repr__