Flask源码阅读-第二篇(flask\__init__.py)

源码：

# -*- coding: utf-8 -*-"""    flask    ~~~~~

A microframework based on Werkzeug.  It‘s extensively documented    and follows best practice patterns.

:copyright: ? 2010 by the Pallets team.    :license: BSD, see LICENSE for more details."""

__version__ = ‘1.0.2‘

# utilities we import from Werkzeug and Jinja2 that are unused# in the module but are exported as public interface.from werkzeug.exceptions import abortfrom werkzeug.utils import redirectfrom jinja2 import Markup, escape

from .app import Flask, Request, Responsefrom .config import Configfrom .helpers import url_for, flash, send_file, send_from_directory, \     get_flashed_messages, get_template_attribute, make_response, safe_join, \     stream_with_contextfrom .globals import current_app, g, request, session, _request_ctx_stack, \     _app_ctx_stackfrom .ctx import has_request_context, has_app_context, \     after_this_request, copy_current_request_contextfrom .blueprints import Blueprintfrom .templating import render_template, render_template_string

# the signalsfrom .signals import signals_available, template_rendered, request_started, \     request_finished, got_request_exception, request_tearing_down, \     appcontext_tearing_down, appcontext_pushed, \     appcontext_popped, message_flashed, before_render_template

# We‘re not exposing the actual json module but a convenient wrapper around# it.from . import json

# This was the only thing that Flask used to export at one point and it had# a more generic name.jsonify = json.jsonify

# backwards compat, goes away in 1.0from .sessions import SecureCookieSession as Sessionjson_available = True

flask\__init__.py本模块顾名思义，主要是做了大量的初始化导入工作，方便后面的直接调用，其中最核心的一句

jsonify = json.jsonify， 在后面的json和接口开发中用得比较多，对json格式的接口交互，

相对 Python的原生json方法，我个人比较推荐用flask的jsonify方法，其直接返回的content-type就是json

原文地址：https://www.cnblogs.com/sea520/p/9995881.html