A simple demo of usage click module
- colored help
- using commands
- custom help option
- custom common options by a wraper of decorators
usage:
$ python3 ./main.py --help
Usage: main.py [OPTIONS] COMMAND [ARGS]...
Options:
--help Shows this message and exits
--version Show version info and exists
Commands:
create Creates instance - Creates a new instance according the precept with optional override parameters
stop Stops an instance - Sends a signal to AWS to stop instance <instance-id>
terminate Terminates an instance - Sends a signal to AWS to terminate instance <instance-id>
or specificaly for command start:
Note that last (wait, verbose quiet dryrun and help commands are defined in @common_options
$ python3 ./main.py create --help
Usage: main.py create [OPTIONS]
Creates instance - Creates a new instance according the precept with optional override parameters
Options:
-p, --precept <precept> Name of the precept [required]
-t, --type <instance-type> Optional type of the instance, if not defined it's taken from the precept. Visit
https://aws.amazon.com/ec2/instance-types/ for the complete list of AWS EC2 instance types
-f, --force-recreate In case if the instance already exists it will shut it down
-n, --name <instance-id> Optional name of the instance, if not defined it's taken from the precept
-w, --wait Waits until operation completes, by default it sends the signal and exits
-v, --verbose Show debug info
-q, --quiet Quiet mode, suppress any errors or warnings except the desired output. That includes even this help.
-d, --dryrun Runs in dry run mode
-h, --help Shows this message and exits