Flask Series

1. Code Catcher
2. Code Catcher Pokemon

Code Monsters Explore the enchanted forest to capture monsters and learn how to program them by completing coding puzzles. Collect, code, and evolve the monsters to victory!

Logging

Logging is used to collect and store valuable information about the application’s execution, that can be used for troubleshooting purposes. Logging includes either storing data to log files, sending it to monitoring services, Windows event logs, Unix syslogs, etc. Information, being stored and / or sent, can be text messages, call stacks, everything application and environment related, which can be used later on for debugging.

One of the most common approaches used is to log in files. Below you could have a look at the logging configuration and how to use it within a Flask application:

More logging handlers that can be used are:

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• RotatingFileHandler
• NTEventLogHandler
• SysLogHandler

You could control the logging data format as well, helpful information how to achieve this goal can be found here.

Error Management

Flask allows to an error handler to a given HTTP status code. There are two types of errors that we will concentrate on in this blog post – application and route errors. Application errors refer to issues in the application code – catching the raised exceptions, etc. Route errors are about missing or wrong URLs.

Route Errors

Download mac os for x86. Flask provides developers with means to implement their own error handlers via the errorhandler decorator.

Where you need to specify the client or server error codes and to implement a method that returns the content of the page, plus the error code. More information can be found here.

Application Errors

You could either use try/except to handle an exception (where you know it may appear) or provide global error handler.

Example Log

Testing of the Error Handlers

It is very easy to test the implemented error handlers in the Flask application.

In the next blog post I will describe how to secure your Flask application.

Save a Publish Setting

You can save your publish settings, which allows you to reproduce output easily. It can be useful to save your commonly used publish settings.

Code Catcher

When the Publish settings options are set, you can follow these steps to save the settings:

Code Catcher Pokemon

1. Click Save As when the options are set in the manner you want.

   The Save Publish Settings As dialog box opens and displays the names of all the currently defined publish settings. By default the following publish settings install with MATLAB:

   • Factory Default

     You cannot overwrite the Factory Default and can restore them by selecting Factory Default from the Publish settings list.

   • User Default

     Initially, User Default settings are identical to the Factory Default settings. You can overwrite the User Default settings.

2. In the Settings Name field, enter a meaningful name for the settings. Then click .

   You can now use the publish settings with other MATLAB files.

   You also can overwrite the publishing properties saved under an existing name. Select the name from the Publish settings list, and then click .