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Is it a good practice to use try-except-else in Python?
...ns inherent in some of the "look-before-you-leap" constructs. For example, testing os.path.exists results in information that may be out-of-date by the time you use it. Likewise, Queue.full returns information that may be stale. The try-except-else style will produce more reliable code in these ca...
What is the overhead of creating a new HttpClient per call in a WebAPI client?
... new HttpClient requires re-establishing a new TCP/IP connection.
From my tests, using plain HTTP on a LAN, the performance hit is fairly negligible. I suspect this is because there is an underlying TCP keepalive that is holding the connection open even when HttpClientHandler tries to close it.
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Run a Python script from another Python script, passing in arguments [duplicate]
... Then I was able to call the main method from another script (ex: A unit test)
– Stan Kurdziel
May 28 '13 at 18:00
Y...
Counting inversions in an array
...on in C++11, including a general iterator-based solution and sample random testbed using sequences from 5-25 elements. Enjoy!.
– WhozCraig
Apr 20 '14 at 20:15
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How to reset postgres' primary key sequence when it falls out of sync?
...ved and combined into a single query: SELECT setval('your_seq',(SELECT GREATEST(MAX(your_id)+1,nextval('your_seq'))-1 FROM your_table))
– Frunsi
Oct 27 '13 at 17:34
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SQLite: How do I save the result of a query as a CSV file?
...v-mode and switch to file output.
sqlite> .mode csv
sqlite> .output test.csv
sqlite> select * from tbl1;
sqlite> .output stdout
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StringIO in Python3
...ule StringIO is gone and from io import BytesIO should be applied instead. Tested myself on python 3.5 @ eclipse pyDev + win7 x64. Please let me know if I were wrong thanks.
– Bill Huang
Mar 5 '16 at 17:16
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Can't access object property, even though it shows up in a console log
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Doing some testing, it seems that you have come across this issue even with an array, so I would recommend doing JSON.stringify instead.
– Flimm
Oct 4 '18 at 14:47
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How to get the concrete class name as a string? [duplicate]
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+1. An 'is' test on the class object itself will be quicker than strings and won't fall over with two different classes called the same thing.
– bobince
Feb 6 '09 at 19:19
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In Python, what is the difference between “.append()” and “+= []”?
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The performance tests here are not correct:
You shouldn't run the profile only once.
If comparing append vs. += [] number of times you should declare append as a local function.
time results are different on different python versions: 64 a...