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What is PEP8's E128: continuation line under-indented for visual indent?
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answered Mar 15 '13 at 15:11
Gareth LattyGareth Latty
74.3k1414 gold badges158158 silver badges169169 bronze badges
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How to set warning level in CMake?
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edited Oct 16 '18 at 17:42
answered Sep 29 '10 at 0:57
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Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?
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170
pandas.isnull() (also pd.isna(), in newer versions) checks for missing values in both numeric ...
How to delete an item in a list if it exists?
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1) Almost-English style:
Test for presence using the in operator, then apply the remove method.
if thing in some_list: some_list.remove(thing)
The removemethod will remove only the first occurrence of thing, in order to r...
Running a specific test case in Django when your app has a tests directory
The Django documentation ( http://docs.djangoproject.com/en/1.3/topics/testing/#running-tests ) says that you can run individual test cases by specifying them:
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typecast string to integer - Postgres
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129
Wild guess: If your value is an empty string, you can use NULLIF to replace it for a NULL:
SE...
How to catch SQLServer timeout exceptions
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158
To check for a timeout, I believe you check the value of ex.Number. If it is -2, then you have...
How to define two fields “unique” as couple
... exactly what you want.
For example:
class MyModel(models.Model):
field1 = models.CharField(max_length=50)
field2 = models.CharField(max_length=50)
class Meta:
unique_together = ('field1', 'field2',)
And in your case:
class Volume(models.Model):
id = models.AutoField(primary_key=Tr...