Python < 3.5では、正規表現中のグループ数が100を超えると、エラーが出て正規表現がコンパイルできない。

named-group-over-100.py

# -*- coding: utf-8 -*-
import re

arr = []
for i in range(1, 40):
    arr.append("^/api/x%02s/(?:\d+)($)" % i)
    arr.append("^/api/x%02s/(?:\d+)/edit($)" % i)
    arr.append("^/api/x%02s/(?:\d+)/comments($)" % i)

all_rexp= re.compile("|".join(arr))   #=> AssertionError
print(all_rexp.pattern)

"""
$ python --version
Python 3.4.3
$ python3 hom.py
Traceback (most recent call last):
  File "hom.py", line 10, in <module>
    all_rexp= re.compile("|".join(arr))   #=> AssertionError
  File "/opt/vs/python/3.4.3/lib/python3.4/re.py", line 223, in compile
    return _compile(pattern, flags)
  File "/opt/vs/python/3.4.3/lib/python3.4/re.py", line 294, in _compile
    p = sre_compile.compile(pattern, flags)
  File "/opt/vs/python/3.4.3/lib/python3.4/sre_compile.py", line 579, in compile
    "sorry, but this version only supports 100 named groups"
AssertionError: sorry, but this version only supports 100 named groups
"""