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python - GitHub上下载的《flaskweb开发》的代码运行不了

j相知相守相爱发布于 2022-10-30 19:12

Connected to pydev debugger (build 139.1001)
Traceback (most recent call last):
  File "C:\Program Files (x86)\JetBrains\PyCharm 4.0.4\helpers\pydev\pydevd.py", line 2222, in 
    globals = debugger.run(setup['file'], None, None)
  File "C:\Program Files (x86)\JetBrains\PyCharm 4.0.4\helpers\pydev\pydevd.py", line 1648, in run
    pydev_imports.execfile(file, globals, locals)  # execute the script
  File "D:/venv/flasky-master/app/__init__.py", line 1, in 
    from flask import Flask
  File "C:\Program Files (x86)\JetBrains\PyCharm 4.0.4\helpers\pydev\_pydev_imps\_pydev_pluginbase.py", line 452, in plugin_import
    fromlist, level)
  File "C:\Python27\lib\site-packages\flask\__init__.py", line 17, in 
    from werkzeug.exceptions import abort
  File "C:\Program Files (x86)\JetBrains\PyCharm 4.0.4\helpers\pydev\_pydev_imps\_pydev_pluginbase.py", line 452, in plugin_import
    fromlist, level)
  File "C:\Python27\lib\site-packages\werkzeug\__init__.py", line 154, in 
    __import__('werkzeug.exceptions')
  File "C:\Program Files (x86)\JetBrains\PyCharm 4.0.4\helpers\pydev\_pydev_imps\_pydev_pluginbase.py", line 452, in plugin_import
    fromlist, level)
  File "C:\Python27\lib\site-packages\werkzeug\exceptions.py", line 71, in 
    from werkzeug.wrappers import Response
  File "C:\Program Files (x86)\JetBrains\PyCharm 4.0.4\helpers\pydev\_pydev_imps\_pydev_pluginbase.py", line 452, in plugin_import
    fromlist, level)
  File "C:\Python27\lib\site-packages\werkzeug\wrappers.py", line 26, in 
    from werkzeug.http import HTTP_STATUS_CODES, \
  File "C:\Program Files (x86)\JetBrains\PyCharm 4.0.4\helpers\pydev\_pydev_imps\_pydev_pluginbase.py", line 452, in plugin_import
    fromlist, level)
  File "C:\Python27\lib\site-packages\werkzeug\http.py", line 24, in 
    from email.Utils import parsedate_tz
  File "C:\Program Files (x86)\JetBrains\PyCharm 4.0.4\helpers\pydev\_pydev_imps\_pydev_pluginbase.py", line 452, in plugin_import
    fromlist, level)
  File "D:/venv/flasky-master/app\email.py", line 2, in 
    from flask import current_app, render_template
ImportError: cannot import name current_app

不知道是哪里出了问题。。查询无果

3 个回答

依次执行这些步骤就没有什么问题：

flasky$ virtualenv venv
flasky$ pip install -r requirements/dev.txt
flasky$ python manage.py db upgrade
flasky$ python manage.py runserver

另外我的环境是ubuntu，直接在终端命令行运行，可能跟windows + Pycharm不太一样，希望对你有帮助。

2022-10-31 21:42 回答

师弟

我遇到过这样的情况，当from flask import current_app代码所在的文件与创建app实例的文件不在同一级目录时就会报错ImportError: cannot import name current_app
比如这样的一个目录
```
flask_app - app - __init__.py(创建app实例处)
          - email.py(from flask import current_app)
```
这时就会报错
如果修改目录结构：
```
flask_app - app - __init__.py
             -  - email.py
```
就不会报错。
希望可以对你有帮助:)
2022-10-31 21:42 回答

幸福的哈瑞宝
从所报的错误来看，是引用上的错误，即使你下载了导入，其中的代码也会有对外的很多依赖，你需要自己再去下载框架和所需依赖包，根据源代码提供方的相关提示，下载相应依赖。

2022-10-31 21:42 回答

txwd2008

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