对于Django 3。X，修改settings.py中的default_port。是这样的:

from decouple import config
import django.core.management.commands.runserver as runserver

runserver.Command.default_port = config('WebServer_Port', default = "8088")

然后，如果你想指定端口，只需在你的setting.ini中添加一个新行

[settings]
WebServer_Port=8091

如果不是，请删除该参数。

我在这里很晚了，但如果你使用像PyCharm这样的IDE，在“运行”菜单下的“编辑配置”中有一个选项(运行>编辑配置)，在那里你可以指定一个默认端口。当然，这只适用于通过PyCharm进行调试/测试。

我们创建了一个新的“runserver”管理命令，它是标准命令的精简包装，但改变了默认端口。粗略地说，你创建management/commands/runserver.py并放入如下内容:

# Override the value of the constant coded into django...
import django.core.management.commands.runserver as runserver
runserver.DEFAULT_PORT="8001"

# ...print out a warning...
# (This gets output twice because runserver fires up two threads (one for autoreload).
#  We're living with it for now :-)
import os
dir_path = os.path.splitext(os.path.relpath(__file__))[0]
python_path = dir_path.replace(os.sep, ".")
print "Using %s with default port %s" % (python_path, runserver.DEFAULT_PORT)

# ...and then just import its standard Command class.
# Then manage.py runserver behaves normally in all other regards.
from django.core.management.commands.runserver import Command

从Django 1.9开始，我找到的最简单的解决方案(基于Quentin stford - fraser的解决方案)是在manage.py中添加几行代码，在调用runserver命令之前动态修改默认端口号:

if __name__ == "__main__":
    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "project.settings.dev")

    import django
    django.setup()

    # Override default port for `runserver` command
    from django.core.management.commands.runserver import Command as runserver
    runserver.default_port = "8080"

    from django.core.management import execute_from_command_line

    execute_from_command_line(sys.argv)

I was struggling with the same problem and found one solution. I guess it can help you. when you run python manage.py runserver, it will take 127.0.0.1 as default ip address and 8000 as default port number which can be configured in your python environment. In your python setting, go to <your python env>\Lib\site-packages\django\core\management\commands\runserver.py and set 1. default_port = '<your_port>' 2. find this under def handle and set if not options.get('addrport'): self.addr = '0.0.0.0' self.port = self.default_port

现在如果你运行"python manage.py runserver"，它将默认运行在"0.0.0.0 "上:

享受编码.....

下面所有的命令都可以在运行django时改变端口:

python manage.py runserver 127.0.0.1:7000

python manage.py runserver 7000

python manage.py runserver 0:7000