Fix linting

Signed-off-by: Maya Costantini <[email protected]>

Author: mayaCostantini

sigstore/sign.py

@@ -82,7 +82,13 @@ class Signer:
     The primary API for signing operations.
     """
 
-    def __init__(self, *, fulcio: FulcioClient, rekor: RekorClient, single_certificate: bool=False):
+    def __init__(
+        self,
+        *,
+        fulcio: FulcioClient,
+        rekor: RekorClient,
+        single_certificate: bool = False,
+    ):
         """
         Create a new `Signer`.
 
@@ -108,7 +114,11 @@ def production(cls, single_certificate=False) -> Signer:
         """
         updater = TrustUpdater.production()
         rekor = RekorClient.production(updater)
-        return cls(fulcio=FulcioClient.production(), rekor=rekor, single_certificate=single_certificate)
+        return cls(
+            fulcio=FulcioClient.production(),
+            rekor=rekor,
+            single_certificate=single_certificate,
+        )
 
     @classmethod
     def staging(cls, single_certificate=False) -> Signer:
@@ -117,7 +127,11 @@ def staging(cls, single_certificate=False) -> Signer:
         """
         updater = TrustUpdater.staging()
         rekor = RekorClient.staging(updater)
-        return cls(fulcio=FulcioClient.staging(), rekor=rekor, single_certificate=single_certificate)
+        return cls(
+            fulcio=FulcioClient.staging(),
+            rekor=rekor,
+            single_certificate=single_certificate,
+        )
 
     @property
     def private_key(self) -> ec.EllipticCurvePrivateKey:
@@ -130,6 +144,7 @@ def private_key(self) -> ec.EllipticCurvePrivateKey:
     @property
     def signing_cert(self) -> FulcioCertificateSigningResponse:
         """Get or request a signing certificate for Fulcio."""
+
         def get_signing_cert(identity_token: str) -> FulcioCertificateSigningResponse:
             if not self._single_certificate or self._signing_certificate is None:
                 logger.debug("Retrieving signed certificate...")
@@ -144,7 +159,9 @@ def get_signing_cert(identity_token: str) -> FulcioCertificateSigningResponse:
                     .subject_name(
                         x509.Name(
                             [
-                                x509.NameAttribute(NameOID.EMAIL_ADDRESS, oidc_identity.proof),
+                                x509.NameAttribute(
+                                    NameOID.EMAIL_ADDRESS, oidc_identity.proof
+                                ),
                             ]
                         )
                     )
@@ -164,7 +181,6 @@ def get_signing_cert(identity_token: str) -> FulcioCertificateSigningResponse:
 
         return get_signing_cert
 
-
     def sign(
         self,
         input_: IO[bytes],