是否可以在生产期间在flask中创建虚拟服务器名称？例如，我需要以下内容：
if (months < 5) {
return {'background-color': 'red'}
}用于开发。
www.foo.com这样的路线：
def main():
app.run(debug=True,host='foo.com',port=8000)
将在@app.route('/bar/')
def bar() -> str:
return 'bar'
到达。
我尝试过更改配置：
foo.com/bar/但是出现一个 OSError：[Errno 49]无法分配请求的地址
更改主机参数
app.run(debug=True,host='0.0.0.0',port=8000)
它定义服务器将侦听的IP地址，而不是DNS。有关更多说明，请参见link。
,为foo.com添加一个条目，指向您的开发PC主机文件中的本地IP（127.0.0.1）。例如，在Windows上，主机文件名为hosts，对于标准安装，该文件位于C:\Windows\System32\drivers\etc。
# Copyright (c) 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally,comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host
127.0.0.1 foo.com
开发后，您将可以在foo.com:8000上存储Flask页面。