Use style of column for new cells in openpyxl

Question

Assume that that there is an existing .xlsx file with specified column styles. As a minimal example create an empty sample.xlsx file and by clicking at

Answer 1

You'll have to set all cell styles manually. Column and row styles in the specification don't really match up to expectations. They're promises for applications about what to do when creating new cells. There are various reasons, but speed is the main one, why we don't do this in openpyxl.