Category Archives: PyXLL

Getting near matches from a list with Python

Posted on April 19, 2020 by

To return a list of near matches from a long list of strings would be quite difficult in VBA (unless I’m missing something), but in Python it is very simple.  Here is the code for this operation, using pyxll to … Continue reading →

Posted in Excel, Link to Python, PyXLL, UDFs | Tagged , , , , , | Leave a comment

Stepping through Python code called from Excel

Posted on March 31, 2020 by

Setting up your editor to allow Python code debugging for functions called from Excel can be tricky, depending on the details of your editor and linking software, but using the Visual Studio Code Editor and Pyxll, this works for me: … Continue reading →

Posted in Computing - general, Excel, Link to Python, PyXLL, UDFs | Tagged , , , , | 4 Comments

More Python Traps

Posted on March 30, 2020 by

I recently posted on some Python Traps, focussing on code where changes in the values of sub-routine arguments were not reflected in the calling routines.  The reverse can also be a problem: if an array, a, is passed to a … Continue reading →

Posted in Arrays, Excel, Link to Python, Newton, NumPy and SciPy, PyXLL, UDFs | Tagged , , , , , | Leave a comment

Python Traps

Posted on January 1, 2020 by

When converting existing VBA code to Python there are a number of obvious changes to the syntax that need to be made for the code to run at all, but there are also a number of not so obvious traps … Continue reading →

Posted in Arrays, Excel, Link to Python, Newton, NumPy and SciPy, PyXLL, UDFs, VBA | Tagged , , , , , , , , | 1 Comment

More powers of 3

Posted on October 20, 2019 by

Following the discovery of a question to which the answer is 42, the same team has now reported a sum of three cubes equal to 3.  As before, the result can be checked from Excel, linking to mpmath, via pyxll. … Continue reading →

Posted in Computing - general, Excel, Link to Python, Maths, Newton, PyXLL | Tagged , , , , , | Leave a comment

The answer to Life the Universe and Everything …

Posted on September 19, 2019 by

is 42, as is well-known: The actual question, to which the answer is 42, is not known, but a lesser known long standing question involving this number has recently been solved: The original problem, set in 1954 at the University … Continue reading →

Posted in Computing - general, Excel, Maths, Newton, PyXLL | Tagged , , , , | 5 Comments

Multiple Integration with Scipy

Posted on January 31, 2019 by

Scipy has 3 functions for multiple numerical integration in the scipy.integrate module: dblquad: Compute a double integral. tplquad: Compute a triple integral’ nquad: Integration over multiple variables. I have written six functions to call these functions from Excel, via Pyxll: Each … Continue reading →

Posted in Excel, Link to Python, Maths, Newton, Numerical integration, NumPy and SciPy, PyXLL, UDFs | Tagged , , , , , | 6 Comments