chore (translator): fmt

pdf2zh/translator.py

@@ -1,7 +1,11 @@
+import hashlib
+import hmac
 import html
 import logging
 import os
 import re
+import time
+from datetime import UTC, datetime
 from json import dumps, loads
 
 import deepl
@@ -11,10 +15,6 @@ import requests
 from azure.ai.translation.text import TextTranslationClient
 from azure.core.credentials import AzureKeyCredential
 
-import hmac
-import hashlib
-import time
-from datetime import datetime,UTC
 
 class BaseTranslator:
     def __init__(self, service, lang_out, lang_in, model):
@@ -58,8 +58,9 @@ class GoogleTranslator(BaseTranslator):
             result = html.unescape(re_result[0])
         return result
 
+
 class TencentTranslator(BaseTranslator):
-    def sign(self,key, msg):
+    def sign(self, key, msg):
         return hmac.new(key, msg.encode("utf-8"), hashlib.sha256).digest()
 
     def __init__(self, service, lang_out, lang_in, model):
@@ -67,12 +68,10 @@ class TencentTranslator(BaseTranslator):
         lang_in = "en" if lang_in == "auto" else lang_in
         super().__init__(service, lang_out, lang_in, model)
         try:
-            server_url = (
-                "tmt.tencentcloudapi.com"
-            )
+            server_url = "tmt.tencentcloudapi.com"
             self.secret_id = os.getenv("TENCENT_SECRET_ID")
             self.secret_key = os.getenv("TENCENT_SECRET_KEY")
-            
+
         except KeyError as e:
             missing_var = e.args[0]
             raise ValueError(
@@ -84,51 +83,77 @@ class TencentTranslator(BaseTranslator):
 
     def translate(self, text):
         text = text[:5000]
-        data={
-            "SourceText":text,
-            "Source":self.lang_in,
-            "Target":self.lang_out,
-            "ProjectId":0
+        data = {
+            "SourceText": text,
+            "Source": self.lang_in,
+            "Target": self.lang_out,
+            "ProjectId": 0,
         }
         payloadx = dumps(data)
         hashed_request_payload = hashlib.sha256(payloadx.encode("utf-8")).hexdigest()
-        canonical_request = ("POST" + "\n" +
-                            "/" + "\n" +
-                            "" + "\n" +
-                            "content-type:application/json; charset=utf-8\nhost:tmt.tencentcloudapi.com\nx-tc-action:texttranslate\n" + "\n" +
-                            "content-type;host;x-tc-action" + "\n" +
-                            hashed_request_payload)
+        canonical_request = (
+            "POST"
+            + "\n"
+            + "/"
+            + "\n"
+            + ""
+            + "\n"
+            + "content-type:application/json; charset=utf-8\nhost:tmt.tencentcloudapi.com\nx-tc-action:texttranslate\n"
+            + "\n"
+            + "content-type;host;x-tc-action"
+            + "\n"
+            + hashed_request_payload
+        )
 
         timestamp = int(time.time())
         date = datetime.fromtimestamp(timestamp, UTC).strftime("%Y-%m-%d")
         credential_scope = date + "/tmt/tc3_request"
-        hashed_canonical_request = hashlib.sha256(canonical_request.encode("utf-8")).hexdigest()
+        hashed_canonical_request = hashlib.sha256(
+            canonical_request.encode("utf-8")
+        ).hexdigest()
         algorithm = "TC3-HMAC-SHA256"
-        string_to_sign = (algorithm + "\n" +
-                        str(timestamp) + "\n" +
-                        credential_scope + "\n" +
-                        hashed_canonical_request)
+        string_to_sign = (
+            algorithm
+            + "\n"
+            + str(timestamp)
+            + "\n"
+            + credential_scope
+            + "\n"
+            + hashed_canonical_request
+        )
         secret_date = self.sign(("TC3" + self.secret_key).encode("utf-8"), date)
         secret_service = self.sign(secret_date, "tmt")
         secret_signing = self.sign(secret_service, "tc3_request")
         signed_headers = "content-type;host;x-tc-action"
-        signature = hmac.new(secret_signing, string_to_sign.encode("utf-8"), hashlib.sha256).hexdigest()
-        authorization = (algorithm + " " +
-                 "Credential=" + self.secret_id + "/" + credential_scope + ", " +
-                 "SignedHeaders=" + signed_headers + ", " +
-                 "Signature=" + signature)
+        signature = hmac.new(
+            secret_signing, string_to_sign.encode("utf-8"), hashlib.sha256
+        ).hexdigest()
+        authorization = (
+            algorithm
+            + " "
+            + "Credential="
+            + self.secret_id
+            + "/"
+            + credential_scope
+            + ", "
+            + "SignedHeaders="
+            + signed_headers
+            + ", "
+            + "Signature="
+            + signature
+        )
         self.headers = {
             "Authorization": authorization,
             "Content-Type": "application/json; charset=utf-8",
             "Host": "tmt.tencentcloudapi.com",
             "X-TC-Action": "TextTranslate",
-            "X-TC-Region":"ap-beijing",
+            "X-TC-Region": "ap-beijing",
             "X-TC-Timestamp": str(timestamp),
-            "X-TC-Version": "2018-03-21"
+            "X-TC-Version": "2018-03-21",
         }
 
         response = self.session.post(
-            "https://"+self.base_link,
+            "https://" + self.base_link,
             json=data,
             headers=self.headers,
         )
@@ -139,7 +164,7 @@ class TencentTranslator(BaseTranslator):
             raise ValueError("HTTP error: " + str(response.status_code))
         # 2. Result test
         try:
-            result = result['Response']['TargetText']
+            result = result["Response"]["TargetText"]
             return result
         except KeyError:
             result = ""
@@ -149,6 +174,7 @@ class TencentTranslator(BaseTranslator):
             raise ValueError("Empty translation result")
         return result
 
+
 class DeepLXTranslator(BaseTranslator):
     def __init__(self, service, lang_out, lang_in, model):
         lang_out = "zh" if lang_out == "auto" else lang_out
@@ -168,7 +194,7 @@ class DeepLXTranslator(BaseTranslator):
             ) from e
 
         self.session = requests.Session()
-        server_url=server_url.rstrip('/')
+        server_url = server_url.rstrip("/")
         if auth_key:
             self.base_link = f"{server_url}/{auth_key}/translate"
         else: