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Extract traceback info from an exception object
...es are minimally described as part of the raise documentation.
All credit for this part of the answer should go to Vyctor, who first posted this information. I'm including it here only because this answer is stuck at the top, and Python 3 is becoming more common.
In Python 2
It's annoyingly compl...
Is there a REAL performance difference between INT and VARCHAR primary keys?
Is there a measurable performance difference between using INT vs. VARCHAR as a primary key in MySQL? I'd like to use VARCHAR as the primary key for reference lists (think US States, Country Codes) and a coworker won't budge on the INT AUTO_INCREMENT as a primary key for all tables.
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multiprocessing: How do I share a dict among multiple processes?
...me keys and values, and use that instead of the original. Is that adequate for your case?
– senderle
Jun 10 at 14:55
1
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C++0x has no semaphores? How to synchronize threads?
...emaphores. I use them (posix semaphores) all the time to let a thread wait for some event in another thread:
10 Answers
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Find which version of package is installed with pip
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@techtonik: It's for freezing current modules to a requirements.txt.
– Hugo
Feb 15 '14 at 10:59
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Minimizing NExpectation for a custom distribution in Mathematica
...u already wrote), that MeanResidualLife takes a long time to compute, even for a single evaluation. Now, the FindMinimum or similar functions try to find a minimum to the function. Finding a minimum requires either to set the first derivative of the function zero and solve for a solution. Since your...
A python class that acts like dict
...he instance's __dict__ - which essentially means you're creating two dicts for every instance.
– Aaron Hall♦
Jan 8 '17 at 0:39
8
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How to implement a good __hash__ function in python [duplicate]
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__hash__ should return the same value for objects that are equal. It also shouldn't change over the lifetime of the object; generally you only implement it for immutable objects.
A trivial implementation would be to just return 0. This is always correct, but per...
How do you do Impersonation in .NET?
...mpersonation library, which uses them internally.
Impersonation
The APIs for impersonation are provided in .NET via the System.Security.Principal namespace:
Newer code (.NET 4.6+, .NET Core, etc.) should generally use WindowsIdentity.RunImpersonated, which accepts a handle to the token of the us...
How to pretty print nested dictionaries?
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I'm not sure how exactly you want the formatting to look like, but you could start with a function like this:
def pretty(d, indent=0):
for key, value in d.items():
print('\t' * indent + str(key))
if isinstance(value, dict):
pretty(value, ...