Question

在使用Flask教程在线构建一个小应用程序后，我不断收到这个ImportError：

eloiim:~ iivri.andre$ export FLASK_APP=Minimalapp.py
eloiim:~ iivri.andre$ flask run 
Traceback (most recent call last):
  File "/usr/local/bin/flask", line 11, in <module>
    sys.exit(main())
  File "/usr/local/lib/python2.7/site-packages/flask/cli.py", line 478,in main
    cli.main(args=args, prog_name=name)
  File "/usr/local/lib/python2.7/site-packages/flask/cli.py", line 345, in main
    return AppGroup.main(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/click/core.py", line 696, in main
    rv = self.invoke(ctx)
  File "/usr/local/lib/python2.7/site-packages/click/core.py", line 1060, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
   File "/usr/local/lib/python2.7/site-packages/click/core.py", line 889, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/local/lib/python2.7/site-packages/click/core.py", line 534, in invoke
    return callback(*args, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/click/decorators.py", line 64, in new_func
    return ctx.invoke(f, obj, *args[1:], **kwargs)
   File "/usr/local/lib/python2.7/site-packages/click/core.py", line 534, in invoke
    return callback(*args, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/flask/cli.py", line 388, in run_command
    app = DispatchingApp(info.load_app, use_eager_loading=eager_loading)
  File "/usr/local/lib/python2.7/site-packages/flask/cli.py", line 124, in __init__
    self._load_unlocked()
    File "/usr/local/lib/python2.7/site-packages/flask/cli.py", line 148, in _load_unlocked
    self._app = rv = self.loader()
  File "/usr/local/lib/python2.7/site-packages/flask/cli.py", line 209, in load_app
    rv = locate_app(self.app_import_path)
  File "/usr/local/lib/python2.7/site-packages/flask/cli.py", line 89, in locate_app
    __import__(module)
 ImportError: No module named Minimalapp.py

这是我的代码：

from flask import Flask 
app = Flask(__name__)

@app.route('/') 
def IsSelf() :
    return 'Hello 这是自'

这是我的ls -R输出

eloiim:learnFlasC iivri.andre$ ls
Hello.py        Minimalapp.py
Http.py         resource_locator.py

我不确定我做错了什么。有什么问题，我该如何解决？

Answer 1

使用FLask cli

在命令行中，导航到包含项目的文件夹并运行：

export FLASK_APP=hello.py
flask run

注意你需要＆＃34; .py＆＃34;。应用程序运行脚本的名称应该是包含代码的脚本。在教程中有hello.py，但你的可能被称为MinimalApp.py或类似的。你需要有一个新的Flask版本，0.11或更高版本，因为这个cli是一个新功能。

使用app.run（）代替新的Flask cli

首先，摆脱文件夹中的所有内容或启动新文件夹。接下来，确保您可以运行

import flask

在Python REPL中没有任何错误（在终端中键入＆＃34; python＆＃34;以访问REPL）。创建一个名为run.py的文件，并将以下内容粘贴到其中：

from flask import Flask
app = Flask(__name__)

@app.route('/') 
def IsSelf() :
    return 'Hello 这是自'

app.run()

保存。在终端中，导航到包含该文件的文件夹并运行

python run.py

如何修复阻止我的代码执行的ImportError？

1 个答案: