Flask 0.11 发布了,Flask 是一个微型的 Python 开发的 Web 框架,示例代码:
@app.route("/") def hello(): return "Hello World!"
改进记录如下:
Added support to serializing top-level arrays to
flask.jsonify
. This introduces a security risk in ancient browsers. Seejson-securityfor details.Added before_render_template signal.
Added
**kwargs
toflask.Test.test_client
to support passing additional keyword arguments to the constructor offlask.Flask.test_client_class
.Added
SESSION_REFRESH_EACH_REQUEST
config key that controls the set-cookie behavior. If set toTrue
a permanent session will be refreshed each request and get their lifetime extended, if set toFalse
it will only be modified if the session actually modifies. Non permanent sessions are not affected by this and will always expire if the browser window closes.Made Flask support custom JSON mimetypes for incoming data.
Added support for returning tuples in the form
(response, headers)
from a view function.Added
flask.Config.from_json
.Added
flask.Flask.config_class
.Added
flask.config.Config.get_namespace
.Templates are no longer automatically reloaded outside of debug mode. This can be configured with the new
TEMPLATES_AUTO_RELOAD
config key.Added a workaround for a limitation in Python 3.3's namespace loader.
Added support for explicit root paths when using Python 3.3's namespace packages.
Added :command:
flask
and theflask.cli
module to start the local debug server through the click CLI system. This is recommended over the oldflask.run()
method as it works faster and more reliable due to a different design and also replacesFlask-Script
.Error handlers that match specific classes are now checked first, thereby allowing catching exceptions that are subclasses of HTTP exceptions (in
werkzeug.exceptions
). This makes it possible for an extension author to create exceptions that will by default result in the HTTP error of their choosing, but may be caught with a custom error handler if desired.Added
flask.Config.from_mapping
.Flask will now log by default even if debug is disabled. The log format is now hardcoded but the default log handling can be disabled through the
LOGGER_HANDLER_POLICY
configuration key.Removed deprecated module functionality.
Added the
EXPLAIN_TEMPLATE_LOADING
config flag which when enabled will instruct Flask to explain how it locates templates. This should help users debug when the wrong templates are loaded.Enforce blueprint handling in the order they were registered for template loading.
Ported test suite to py.test.
Deprecated
request.json
in favour ofrequest.get_json()
.Add "pretty" and "compressed" separators definitions in jsonify() method. Reduces JSON response size when JSONIFY_PRETTYPRINT_REGULAR=False by removing unnecessary white space included by default after separators.
JSON responses are now terminated with a newline character, because it is a convention that UNIX text files end with a newline and some clients don't deal well when this newline is missing. Seehttps://github.com/pallets/flask/pull/1262 -- this came up originally as a part of https://github.com/kennethreitz/httpbin/issues/168
The automatically provided
OPTIONS
method is now correctly disabled if the user registered an overriding rule with the lowercase-versionoptions
(issue#1288
).flask.json.jsonify
now supports thedatetime.date
type (pull request#1326
).Don't leak exception info of already catched exceptions to context teardown handlers (pull request
#1393
).Allow custom Jinja environment subclasses (pull request
#1422
).flask.g
now haspop()
andsetdefault
methods.Turn on autoescape for
flask.templating.render_template_string
by default (pull request#1515
).flask.ext
is now deprecated (pull request#1484
).send_from_directory
now raises BadRequest if the filename is invalid on the server OS (pull request#1763
).Added the
JSONIFY_MIMETYPE
configuration variable (pull request#1728
).Exceptions during teardown handling will no longer leave bad application contexts lingering around.