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			17 lines
		
	
	
		
			491 B
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			17 lines
		
	
	
		
			491 B
		
	
	
	
		
			Python
		
	
	
	
	
	
| from argparse import ArgumentError
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| 
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| from django.core.management.base import BaseCommand, CommandError
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| 
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| 
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| class Command(BaseCommand):
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|     def add_arguments(self, parser):
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|         try:
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|             parser.add_argument("--version", action="version", version="A.B.C")
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|         except ArgumentError:
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|             pass
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|         else:
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|             raise CommandError("--version argument does no yet exist")
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| 
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|     def handle(self, *args, **options):
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|         return "Detected that --version already exists"
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