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When saving, how can you check if a field has changed?
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435
Essentially, you want to override the __init__ method of models.Model so that you keep a copy o...
Python integer division yields float
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Take a look at PEP-238: Changing the Division Operator
The // operator will be available to request floor division unambiguously.
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How to duplicate sys.stdout to a log file?
...Note this version was written circa Python 2.6, see below for
# an updated 3.3+-compatible version.
import subprocess, os, sys
# Unbuffer output (this ensures the output is in the correct order)
sys.stdout = os.fdopen(sys.stdout.fileno(), 'w', 0)
tee = subprocess.Popen(["tee", "log.txt"], stdin=su...
Does MongoDB's $in clause guarantee order
... { "$eq": [ "$_id", 2 ] },
2,
3
]}
]}
}},
// Sort the results
{ "$sort": { "weight": 1 } }
])
So that would be the expanded form. What basically happens here is that just as the array of values is passed to $in you also...
How to get method parameter names?
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363
Take a look at the inspect module - this will do the inspection of the various code object pro...
difference between variables inside and outside of __init__()
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253
Variable set outside __init__ belong to the class. They're shared by all instances.
Variables...
How to select a single field for all documents in a MongoDB collection?
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answered Aug 31 '14 at 5:15
therealrootusertherealrootuser
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C++ compiling on Windows and Linux: ifdef switch [duplicate]
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use:
#ifdef __linux__
//linux code goes here
#elif _WIN32
// windows code goes here
#else
#endif
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Get name of current class?
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answered Aug 4 '11 at 14:32
Yuval AdamYuval Adam
144k8383 gold badges282282 silver badges380380 bronze badges
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Python nested functions variable scoping [duplicate]
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edited Oct 30 '14 at 5:16
answered Nov 7 '12 at 20:08
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