I had cloned the ACL repository and I tried to convert all the markdown files into HTML files using the generate_document.py script which is given in the /tools directory when I ran into this error:

❯ ./generate_document.py
12:45:37 [INFO] start converting, lang=en
12:45:37 [INFO] convert ../document_en/twosat.md
Traceback (most recent call last):
File "/home/tusky/Tushar/ac-library/tools/./generate_document.py", line 89, in
statement = convert(open(md_file).read(), base_dir, opts.tag)
File "/home/tusky/Tushar/ac-library/tools/./generate_document.py", line 50, in convert
if tag == 'production' or re.match(r'v[0-9].[0-9]', tag):
File "/usr/lib/python3.9/re.py", line 191, in match
return _compile(pattern, flags).match(string)
TypeError: expected string or bytes-like object

After a little bit of googling, I was brought to an answer on Stack Overflow which urged me to wrap the variable tag with the str function which seemed to do the trick.

Thus changing line 50 of generate_document.py to

if tag == 'production' or re.match(r'v[0-9]\.[0-9]', str(tag)):

seems to do the trick and I can now see the desired output:

❯ ./generate_document.py
12:50:49 [INFO] start converting, lang=en
12:50:49 [INFO] convert ../document_en/twosat.md
12:50:49 [INFO] read example: twosat_practice
12:50:49 [INFO] convert ../document_en/dsu.md
12:50:49 [INFO] read example: dsu_practice
12:50:49 [INFO] convert ../document_en/maxflow.md
12:50:49 [INFO] read example: maxflow_practice
12:50:49 [INFO] convert ../document_en/appendix.md
12:50:49 [INFO] convert ../document_en/scc.md
12:50:49 [INFO] read example: scc_practice
12:50:49 [INFO] convert ../document_en/index.md
12:50:49 [INFO] convert ../document_en/convolution.md
12:50:49 [INFO] read example: convolution_int_practice
12:50:49 [INFO] read example: convolution_practice
12:50:49 [INFO] convert ../document_en/lazysegtree.md
12:50:49 [INFO] read example: lazyseg_practice1
12:50:49 [INFO] read example: lazyseg_practice2
12:50:49 [INFO] convert ../document_en/modint.md
12:50:49 [INFO] read example: modint_usage
12:50:49 [INFO] convert ../document_en/fenwicktree.md
12:50:49 [INFO] read example: fenwick_practice
12:50:49 [INFO] convert ../document_en/string.md
12:50:49 [INFO] read example: sa_usage
12:50:49 [INFO] read example: sa_practice
12:50:49 [INFO] convert ../document_en/segtree.md
12:50:49 [INFO] read example: segtree_practice
12:50:49 [INFO] convert ../document_en/mincostflow.md
12:50:49 [INFO] read example: mincostflow_practice
12:50:49 [INFO] convert ../document_en/math.md
12:50:49 [INFO] read example: floor_sum_practice
12:50:49 [INFO] start converting, lang=ja
12:50:49 [INFO] convert ../document_ja/twosat.md
12:50:49 [INFO] read example: twosat_practice
12:50:49 [INFO] convert ../document_ja/dsu.md
12:50:49 [INFO] read example: dsu_practice
12:50:49 [INFO] convert ../document_ja/maxflow.md
12:50:49 [INFO] read example: maxflow_practice
12:50:49 [INFO] convert ../document_ja/appendix.md
12:50:49 [INFO] convert ../document_ja/scc.md
12:50:49 [INFO] read example: scc_practice
12:50:49 [INFO] convert ../document_ja/index.md
12:50:49 [INFO] convert ../document_ja/convolution.md
12:50:49 [INFO] read example: convolution_int_practice
12:50:49 [INFO] read example: convolution_practice
12:50:49 [INFO] convert ../document_ja/lazysegtree.md
12:50:49 [INFO] read example: lazyseg_practice1
12:50:49 [INFO] read example: lazyseg_practice2
12:50:49 [INFO] convert ../document_ja/modint.md
12:50:49 [INFO] read example: modint_usage
12:50:49 [INFO] convert ../document_ja/fenwicktree.md
12:50:49 [INFO] read example: fenwick_practice
12:50:49 [INFO] convert ../document_ja/string.md
12:50:49 [INFO] read example: sa_usage
12:50:49 [INFO] read example: sa_practice
12:50:49 [INFO] convert ../document_ja/segtree.md
12:50:49 [INFO] read example: segtree_practice
12:50:49 [INFO] convert ../document_ja/mincostflow.md
12:50:49 [INFO] read example: mincostflow_practice
12:50:49 [INFO] convert ../document_ja/math.md
12:50:49 [INFO] read example: floor_sum_practice