class application( flask ): def __init__(self,import_name): super( applicati
时间: 2024-06-05 14:10:05 浏览: 13
on, self).__init__(import_name)
def run(self, host=None, port=None, debug=None, load_dotenv=True, **options):
if not self.debug or os.environ.get("WERKZEUG_RUN_MAIN") == "true":
print("Starting server...")
super().run(host=host, port=port, debug=debug, load_dotenv=load_dotenv, **options)
@staticmethod
def route(rule, **options):
def decorator(f):
endpoint = options.pop("endpoint", None)
application.add_url_rule(rule, endpoint, f, **options)
return f
return decorator
相关问题
from flask import current_app ImportError: cannot import name 'current_app'
This error message indicates that there is an issue with importing the `current_app` object from the `flask` module. This object is used to access the current Flask application instance, and is typically used in a context where the application instance is not available through other means.
There are a few possible reasons why you might encounter this error:
1. You may be importing `current_app` from the wrong module. Make sure that you are importing it from the `flask` module and not another module with a similar name.
2. You may be importing `current_app` before the Flask application has been created. `current_app` is only available when a Flask application context is active, so if you try to import it outside of a request or application context, you will get this error. Make sure that you are importing `current_app` from within a Flask view function, or from within a function that is called within a Flask view function.
3. There may be a circular import issue in your application. Flask applications can be prone to circular import issues if you're not careful about how you structure your code. If you're importing `current_app` from a module that also imports something from the module where your Flask application instance is created, you may run into this error. Try restructuring your code to avoid circular imports.
To resolve this error, you should check your code for the above issues and make sure that you are importing `current_app` correctly and in the right context. You may also want to review the Flask documentation on application context and request context to better understand how they work.
Flask(__name__)
在Flask中,`Flask(__name__)`是创建一个Flask应用程序的实例。`__name__`参数代表应用程序包的名称。根据Flask文档的建议,我们通常将`__name__`传递给`Flask`类的构造函数,而不需要详细说明原因。这个参数的作用是告诉Flask应用程序在哪里找到静态文件、模板等资源。创建Flask实例后,我们可以在该实例上添加路由和视图函数,并启动一个Web服务器来处理HTTP请求。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* [Flask中第一个参数__name__的含义](https://blog.csdn.net/weixin_44747103/article/details/127281862)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT0_1"}}] [.reference_item style="max-width: 50%"]
- *2* *3* [Flask项目基本流程](https://blog.csdn.net/weixin_45477572/article/details/120824907)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT0_1"}}] [.reference_item style="max-width: 50%"]
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