On 2020-04-29 16:34, ro...@reportlab.com wrote:
While testing 3.9a6 in the reportlab package I see this difference from 3.8.2; 
I built from source using the standard configure make dance. Is this a real 
change?

Hi,
This is a known issue, currently discussed in https://bugs.python.org/issue40246

Thanks for reporting it, though!

robin@minikat:~/devel/reportlab/REPOS/reportlab/tests
$ python
Python 3.8.2 (default, Apr  8 2020, 14:31:25)
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n')

robin@minikat:~/devel/reportlab/REPOS/reportlab/tests
$ python39
Python 3.9.0a6 (default, Apr 29 2020, 07:46:29)
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n')
   File "<stdin>", line 1
     norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n')
                                          ^
SyntaxError: invalid string prefix

robin@minikat:~/devel/reportlab/REPOS/reportlab/tests
$ python39 -X oldparser
Python 3.9.0a6 (default, Apr 29 2020, 07:46:29)
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n')
   File "<stdin>", line 1
     norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n')
                                        ^
SyntaxError: invalid string prefix

robin@minikat:~/devel/reportlab/REPOS/reportlab/tests
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