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How do I do an OR filter in a Django query?
...o.db.models import Q
query = Q(first_name='mark')
query.add(Q(email='mark@test.com'), Q.OR)
query.add(Q(last_name='doe'), Q.AND)
queryset = User.objects.filter(query)
This ends up with a query like :
(first_name = 'mark' or email = 'mark@test.com') and last_name = 'doe'
This way there is no n...
Python mysqldb: Library not loaded: libmysqlclient.18.dylib
...and installed mysqldb for python 2.7 on my mac os 10.6. I created a simple test file that imports
15 Answers
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Clone Object without reference javascript [duplicate]
...rray so for..in is a better choice in this case. Also, there is no need to test source[prop], why not copy falsey properties?
– RobG
Oct 2 '12 at 12:25
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How to pretty print nested dictionaries?
... you can do whatever you want with it.
The class and the function has been tested and works with Python 2.7 and 3.4.
You can have all type of objects inside, this is their representations and not theirs contents that being put in the result (so string have quotes, Unicode string are fully represente...
Use of *args and **kwargs [duplicate]
...
@kavinyao: you clearly do not know Python and do not tested what you wrote. value2 goes as first element in args, so no exception.
– Marco Sulla
Dec 24 '19 at 18:27
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Advantages to Using Private Static Methods
...because they break polymorphism, and mean the object cannot be stubbed for testing. for example see googletesting.blogspot.co.uk/2008/12/…
– Andy
Jul 16 '15 at 10:22
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Pythonic way to find maximum value and its index in a list?
...ssuming that it's already an np.array(). I had to turn down the number of test runs because the test is looking at 10000000 elements not just 100.
import random
from datetime import datetime
import operator
import numpy as np
def explicit(l):
max_val = max(l)
max_idx = l.index(max_val)
...
How can I pass a member function where a free function is expected?
... char * argv[])
{
...
aClass a;
auto fp = std::bind(&aClass::test, a, _1, _2);
function1(fp);
return 0;
}
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How to refer to relative paths of resources when working with a code repository
...ath.dirname(os.path.abspath(__file__))
thefile = os.path.join(package_dir,'test.cvs')
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How to override the [] operator in Python?
...d in ver 3.x. Instead, use __getitem__. __setitem__` and __delitem__' and test if the argument is of type slice, i.e.: if isinstance(arg, slice): ...
– Don O'Donnell
Dec 25 '09 at 18:15
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