Category Archives: PyXLL

Dynamic array update and the @ operator

Posted on 11/06/2026 by dougaj4

Many of the user defined functions (UDF’s) presented in this blog return an array rather than a single value. Options for displaying arrays in Excel have changed significantly in recent years and this post looks at the most efficient ways … Continue reading →

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

Scipy-statistics with all distributions

Posted on 17/05/2026 by dougaj4

Following the previous post the Scipy statistics functions have been updated to include all the distributions, including the discrete distributions. The input to the distribution functions has also been updated to allow arrays to be transferred either as Excel ranges … Continue reading →

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

Transferring different data types to/from Python with pyxll

Posted on 12/05/2026 by dougaj4

When a user defined function (UDF) is created in Excel with Python and pyxll the data type of each argument can be specified, either in the @xl_func decorator, or with a separate @xl_arg decorator for each argument. I prefer the … Continue reading →

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

Scipy-statistics with distributions

Posted on 01/05/2026 by dougaj4

The Scipy statistics functions last presented here have now been updated with the addition of links to the numerous distribution functions. The py_Stats spreadsheet, with associated Python code in PythonStatsFuncs3.py and pyScipy3.py, and also minor updates to the pyNumpy.py code, … Continue reading →

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

The Ultimate Python Guide for VBA Developers

Posted on 15/04/2026 by dougaj4

I recently discovered “The Ultimate Python Guide for VBA Developers” which is a free book available from the pyxll site at https://www.pyxll.com/learn-python.html. The pyxll site says: This book has been written specifically for VBA and Excel users like you. Fast … Continue reading →

Posted in Computing - general, Excel, Link to Python, Python Pandas, PyXLL, UDFs, VBA | Tagged , , | Leave a comment