\setupbackend[
export=yes,
xhtml=yes
]
\setupexport[
title={linenumber placement missmatch example in export},
subtitle={},
author={Xristoph}
]
\definetyping[mine][numbering=line,tab=4,location=left]
\starttext
This is a small example trying to use verbatim linenumbering in xml export

\startmine
#!python
a=12
def hellow_world(hello):
    print("simon says: {}".format(hello))
hallo_welt("how do youdo")
\stopmine

The spaces are kept but the linenumbers are placed on intermediate lines as they are not included inside \type{<verbatimline>} tags but lateron added outside infront oft the tags.
\stoptext