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not None test in Python [duplicate]
...e optimal test for this. As Johnsyweb points out, this is discussed in PEP 8 under "Programming Recommendations".
As for why this is preferred to
if not (val is None):
# ...
this is simply part of the Zen of Python: "Readability counts." Good Python is often close to good pseudocode.
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2 column div layout: right column with fixed width, left fluid
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8 Answers
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How to use transactions with dapper.net?
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answered Apr 28 '12 at 13:32
the_joricthe_joric
10.7k33 gold badges3131 silver badges5353 bronze badges
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UTF-8 without BOM
I have javascript files that I need them to be saved in UTF-8 (without BOM), every time I convert them to the correct format in Notepad++ , they are reverted back to UTF-8 with BOM when I open them in Visual Studio. How can I stop VS2010 from doing that?
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How to beautify JSON in Python?
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186
From the command-line:
echo '{"one":1,"two":2}' | python -mjson.tool
which outputs:
{
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String concatenation vs. string substitution in Python
...__main__ import so_q_cat')
>>> t1.timeit(number=10000000)
12.166618871951641
>>> t2.timeit(number=10000000)
5.7813972166853773
>>> t1.timeit(number=1)
1.103492206766532e-05
>>> t2.timeit(number=1)
8.5206360154188587e-06
>>> def so_q_tmp(n):
... return "...
Why can't I use float value as a template parameter?
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38
The current C++ standard does not allow float (i.e. real number) or character string literals to...
Get name of caller function in PHP?
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edited Nov 25 '15 at 18:16
Community♦
111 silver badge
answered Oct 10 '08 at 7:37
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How to get UTC timestamp in Ruby?
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118
time = Time.now.getutc
Rationale: In my eyes a timestamp is exactly that: A point in time. Thi...
Where is svcutil.exe in Windows 7?
...1
– David Barrows
Jul 24 '17 at 14:28
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