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Chained method calls indentation style in Python [duplicate]
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Raymond, what's the reason Python doesn't allow new line before and after a dot? This makes good formatting harder not easier...
– Piotr Dobrogost
Apr 1 '13 at 18:45
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Why is “if not someobj:” better than “if someobj == None:” in Python?
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In the first test, Python try to convert the object to a bool value if it is not already one. Roughly, we are asking the object : are you meaningful or not ? This is done using the following algorithm :
If the object has a __nonzero__ special...
mfc里面的140种颜色宏 - C/C++ - 清泛网 - 专注C/C++及内核技术
...R_BLACK RGB( 0, 0, 0) // 纯黑
完整.h文件下载：ColorDef.zip
mfc 颜色宏
Origin null is not allowed by Access-Control-Allow-Origin
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@CiaranG I ran python -m SimpleHTTPServer from a command line and then went to localhost:8000, worked for me. Python comes preinstalled with Mac OS X; you may need to install if using another OS.
– Dave Liepmann
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Handling very large numbers in Python
I've been considering fast poker hand evaluation in Python. It occurred to me that one way to speed the process up would be to represent all the card faces and suits as prime numbers and multiply them together to represent the hands. To whit:
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How do I convert a IPython Notebook into a Python file via commandline?
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If you don't want to output a Python script every time you save, or you don't want to restart the IPython kernel:
On the command line, you can use nbconvert:
$ jupyter nbconvert --to script [YOUR_NOTEBOOK].ipynb
As a bit of a hack, you can even call t...
How to make unicode string with python3
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Literal strings are unicode by default in Python3.
Assuming that text is a bytes object, just use text.decode('utf-8')
unicode of Python2 is equivalent to str in Python3, so you can also write:
str(text, 'utf-8')
if you prefer.
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TypeError: Missing 1 required positional argument: 'self'
I am new to python and have hit a wall. I followed several tutorials but cant get past the error:
6 Answers
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Easy pretty printing of floats in python?
...'d add something potentially useful:
I know you wrote your example in raw Python lists, but if you decide to use numpy arrays instead (which would be perfectly legit in your example, because you seem to be dealing with arrays of numbers), there is (almost exactly) this command you said you made up:...
Import a file from a subdirectory?
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Take a look at the Packages documentation (Section 6.4) here: http://docs.python.org/tutorial/modules.html
In short, you need to put a blank file named
__init__.py
in the "lib" directory.
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