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		d362c1546f
		
	
	
	
	
		
			
			git-svn-id: http://code.djangoproject.com/svn/django/trunk@16976 bcc190cf-cafb-0310-a4f2-bffc1f526a37
		
			
				
	
	
		
			13 lines
		
	
	
	
		
			363 B
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			13 lines
		
	
	
	
		
			363 B
		
	
	
	
		
			Python
		
	
	
	
	
	
| from datetime import datetime
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| 
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| from django.db import models
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| 
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| 
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| def expensive_calculation():
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|     expensive_calculation.num_runs += 1
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|     return datetime.now()
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| 
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| class Poll(models.Model):
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|     question = models.CharField(max_length=200)
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|     answer = models.CharField(max_length=200)
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|     pub_date = models.DateTimeField('date published', default=expensive_calculation)
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