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unbound method f() must be called with fibo_ instance as first argument (got classobj instance inste
... are calling the method on the class rather than on an instance, which is exactly what was happening in this case because you hadn't instantiated the class.
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Python how to write to a binary file?
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This is exactly what bytearray is for:
newFileByteArray = bytearray(newFileBytes)
newFile.write(newFileByteArray)
If you're using Python 3.x, you can use bytes instead (and probably ought to, as it signals your intention better). B...
Run an OLS regression with Pandas Data Frame
... the values of column A from the values in columns B and C. Here is a toy example:
5 Answers
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Why does the is operator return false when given null?
...ers. The question that the is operator answers is the third question. y is X does not ask "is y a legal value of a variable of type X?" It asks "Is y a valid reference to an object of type X?" Since a null reference is not a valid reference to any object of any type, the answer is "no". That drivewa...
Is it possible to modify variable in python that is in outer, but not global, scope?
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Python 3.x has the nonlocal keyword. I think this does what you want, but I'm not sure if you are running python 2 or 3.
The nonlocal statement causes the listed identifiers to refer to
previously bound variables in the nearest...
Rotating a point about another point (2D)
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First subtract the pivot point (cx,cy), then rotate it, then add the point again.
Untested:
POINT rotate_point(float cx,float cy,float angle,POINT p)
{
float s = sin(angle);
float c = cos(angle);
// translate point back to origin:
p.x -= cx;
p.y...
Left Align Cells in UICollectionView
...he line is composed by only 1 item or are over complicated.
Based on the example given by Ryan, I changed the code to detect a new line by inspecting the Y position of the new element. Very simple and quick in performance.
Swift:
class LeftAlignedCollectionViewFlowLayout: UICollectionViewFlowLa...
How to create a self-signed certificate with OpenSSL
I'm adding HTTPS support to an embedded Linux device. I have tried to generate a self-signed certificate with these steps:
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How to delete files older than X hours
...wered Oct 30 '08 at 8:39
Paul DixonPaul Dixon
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Removing “NUL” characters
...findreplace-of-nul-objects-in-notepad.html
Basically you need to replace \x00 characters with regular expressions
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