Category Archives: UDFs

3DFrame-py rel. 0.50

Posted on 14/07/2025 by dougaj4

Following the recent post on the Python lru_cache function (Python functools and the Fibonacci Sequence) I have had a look at using lru_cache in the 3DFrame-py spreadsheet. So far using lru_cache in this code has provided little to no speed improvement, … Continue reading →

Posted in Beam Bending, Coordinate Geometry, Excel, Finite Element Analysis, Frame Analysis, Link to Python, Newton, NumPy and SciPy, PyXLL, Strand7, UDFs | Tagged , , , , , , , | Leave a comment

The iccanobiF Sequence

Posted on 09/07/2025 by dougaj4

Coincidentally, following the previous post, New Scientist’s regular brain teaser featured the iccanobiF Sequence, which is just like the Fibonacci Sequence, except that after adding the two previous numbers the digits of the results are reversed. Obviously the sequences are … Continue reading →

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

Python functools and the Fibonacci Sequence

Posted on 19/06/2025 by dougaj4

The Python functools module has been around since 2006, so it’s not exactly new, but it is something I don’t currently use, but with potential to be useful. This link: Functools module in Python provides details and examples of all … Continue reading →

Posted in Excel, Link to Python, Maths, Newton, PyXLL, UDFs | Tagged , , , , , , , , , | 2 Comments

Why use the walrus?

Posted on 11/06/2025 by dougaj4

Continuing posts on new Python features, this one looks at the new walrus operator, which was introduced in Python 3.8. For a detailed description see Python Walrus Operator in Python 3.8. This post looks at an example using pyxll to … Continue reading →

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Random numbers, palindromes and Numpy update

Posted on 09/06/2025 by dougaj4

This post looks at some of the options for generating random numbers in Excel and Python. The code and example spreadsheets can be downloaded from: Updated Numpy files at: py_SciPy.zipCode added to the Pandigital files at: Pandigitals.zip The py_SciPy download … Continue reading →

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