Update server_fastapi.py. Avoid loading the model repeatedly. Add logger (#145)

* Update server_fastapi.py. Avoid loading the model repeatedly. Add loguru logger.

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tools/translate.py

@@ -20,7 +20,7 @@ def translate(Sentence: str, to_Language: str = "jp", from_Language: str = ""):
     appid = config.translate_config.app_key
     key = config.translate_config.secret_key
     if appid == "" or key == "":
-        return "请在开发者config.yml中配置app_key与secret_key"
+        return "请开发者在config.yml中配置app_key与secret_key"
     url = "https://fanyi-api.baidu.com/api/trans/vip/translate"
     texts = Sentence.split("\n")
     outTexts = []