@app.route('/')
def index():
 return 'Index Page'

@app.route('/hello')
def hello():
 return 'Hello, World'

@app.route('/user/<username>')
def show_user(username):
 return username

@app.route('/post/<int:post_id>')
def show_post(post_id):
 return 'Post %d' % post_id

@app.route('/path/<path:subpath>')
def show_subpath(subpath):
 # show the subpath after /path/
 return 'Subpath %s' % escape(subpath)

@app.route('/test/')
#当我们访问http://127.0.0.1/test的时候，会重定向到http://127.0.0.1/test/
def test():
  return 'test'

@app.route('slashes')
#当我们访问http://127.0.0.1/slashes/的时候，会提示404，无法匹配到路由
def slashes():
 return 'slashes'

from flask import Flask
app = Flask(__name__)
@app.route('/')
def hello_world():
 return '<a href="/home">Hello World!</a>'
@app.route("/home")
def home():
 return "这个是主页"
@app.route("/login")
def login():
 return "这个是登录"

if __name__ == '__main__':
 app.run(debug=True)

"""
 Flask 路由简单实现
 map: {"/home":"home", "/login":"login", ...}
"""
map = dict()

def route(path):
 def decorator(f):
  print(path, f.__name__, "<-----------start---------->")
  map[path] = f.__name__
  return f
 return decorator


class TestFlaskRoute:

 def __init__(self, path):
  self.path = path

 def find_url(self):
  try:
   getattr(TestFlaskRoute, map.get(self.path)).__call__(self)
  except:
   print("\033[031m 没有这个路径! \033[0m ")

 @route("/login")
 def login(self, *args, **kwargs):
  print("\033[036m 这个是登录！ \033[0m")
  pass

 @route("/home")
 def home(self, *args, **kwargs):
  print("\033[036m 这个是主页！ \033[0m")
  pass

 @route("/")
 def index(self, *args, **kwargs):
  print("\033[036m Hello World！ \033[0m")
  pass

 @route("/call")
 def phone(self, *args, **kwargs):
  print("\033[036m 这个是", self.path, "！ \033[0m")
  pass

if __name__ == '__main__':
 while True:
  url = input("请输入URL路径:")
  app = TestFlaskRoute(url)
  app.find_url()