Use literals for collections and comprehensions. (pyca#5091)

atombrella · reaperhulk · commit a849f40556bd · 2020-01-12T17:29:17.000-05:00
diff --git a/docs/development/custom-vectors/hkdf/generate_hkdf.py b/docs/development/custom-vectors/hkdf/generate_hkdf.py
@@ -19,14 +19,14 @@
 
 
 def _build_vectors():
-    output = []
-    output.append("COUNT = 0")
-    output.append("Hash = SHA-256")
-    output.append("IKM = " + binascii.hexlify(IKM).decode("ascii"))
-    output.append("salt = ")
-    output.append("info = ")
-    output.append("L = {}".format(L))
-    output.append("OKM = " + binascii.hexlify(OKM).decode("ascii"))
+    output = [
+        "COUNT = 0",
+        "Hash = SHA-256",
+        "IKM = " + binascii.hexlify(IKM).decode("ascii"),
+        "salt = ", "info = ",
+        "L = {}".format(L),
+        "OKM = " + binascii.hexlify(OKM).decode("ascii"),
+    ]
     return "\n".join(output)
 
 
diff --git a/src/cryptography/hazmat/backends/openssl/decode_asn1.py b/src/cryptography/hazmat/backends/openssl/decode_asn1.py
@@ -64,7 +64,7 @@ def _decode_x509_name(backend, x509_name):
         attribute = _decode_x509_name_entry(backend, entry)
         set_id = backend._lib.Cryptography_X509_NAME_ENTRY_set(entry)
         if set_id != prev_set_id:
-            attributes.append(set([attribute]))
+            attributes.append({attribute})
         else:
             # is in the same RDN a previous entry
             attributes[-1].add(attribute)
diff --git a/src/cryptography/x509/name.py b/src/cryptography/x509/name.py
@@ -25,7 +25,7 @@ class _ASN1Type(Enum):
     BMPString = 30
 
 
-_ASN1_TYPE_TO_ENUM = dict((i.value, i) for i in _ASN1Type)
+_ASN1_TYPE_TO_ENUM = {i.value: i for i in _ASN1Type}
 _SENTINEL = object()
 _NAMEOID_DEFAULT_TYPE = {
     NameOID.COUNTRY_NAME: _ASN1Type.PrintableString,
diff --git a/src/cryptography/x509/ocsp.py b/src/cryptography/x509/ocsp.py
@@ -41,7 +41,7 @@ class OCSPResponseStatus(Enum):
     UNAUTHORIZED = 6
 
 
-_RESPONSE_STATUS_TO_ENUM = dict((x.value, x) for x in OCSPResponseStatus)
+_RESPONSE_STATUS_TO_ENUM = {x.value: x for x in OCSPResponseStatus}
 _ALLOWED_HASHES = (
     hashes.SHA1, hashes.SHA224, hashes.SHA256,
     hashes.SHA384, hashes.SHA512
@@ -61,7 +61,7 @@ class OCSPCertStatus(Enum):
     UNKNOWN = 2
 
 
-_CERT_STATUS_TO_ENUM = dict((x.value, x) for x in OCSPCertStatus)
+_CERT_STATUS_TO_ENUM = {x.value: x for x in OCSPCertStatus}
 
 
 def load_der_ocsp_request(data):
