单击 main() 中的错误 "takes no arguments"

Question

我遇到了我认为是由于点击引起的问题。我正在尝试运行这段代码，并且我将运行ning 保持在相同的回溯类型错误中，说明一个参数正在传递给 main()。

#!/usr/bin/python
# -*- coding: utf-8 -*-

import sys
import boto
import boto.ec2
import click

@click.command()
@click.option('--region', '-r', default='us-west-2', help='AWS Region')

def main():
    try:
        ec2 = boto.ec2.connect_to_region(region)
    except Exception, error:
        print("Boto Error: %s" ) % str(error)
    else:
        print("It's working!")
    finally:
        sys.exit(1)

if __name__ == "__main__":
    main()

这段代码看起来很简单，所以我认为 click 在这里做了一些事情来防止它正常工作？

Traceback (most recent call last):
  File "test.py", line 21, in <module>
    main()
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/click-5.1-py2.7.egg/click/core.py", line 700, in __call__
    return self.main(*args, **kwargs)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/click-5.1-py2.7.egg/click/core.py", line 680, in main
    rv = self.invoke(ctx)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/click-5.1-py2.7.egg/click/core.py", line 873, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/click-5.1-py2.7.egg/click/core.py", line 508, in invoke
    return callback(*args, **kwargs)
TypeError: main() takes no arguments (1 given)

Answer 1

我不熟悉 click 模块，但从文档中可以看出，您应该将 def main(): 更改为 def main(region):，因为您希望函数接受参数您是从命令行传递的。

单击 main() 中的错误 "takes no arguments"

Click error "takes no arguments" in main()

python

python-click