1. For example redirct like this can not be named functions, because these things have a function of the flask, so that the system will not tell you in the end is where the use of the function.
2. I wrote a http.py document, introduced in the document make_response
The problem is in my files are named above, should not be named http, http python comes to the plate, should not use the name, this will have a huge problem.
3. The introduction of static files in question, ... use url_for introduced.
The reason for the error is static must be written, all the static files are required on the static folder, which is the default, so "{{url_for ( 'static', filename = 'css / some.css')}} "such wording is
4. want to use the asynchronous ajax loading stuff, but gets displayed in the $ sign is not valid ???
$ is not defined
Answer: no import jQuery jar package, this is the most likely cause can be loaded jquery by cdn
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>