/in/foo.cc:9:37: warning: multi-character character constant [-Wmultichar]
 _1, _10, _n = Decimal('1'), Decimal('10'), Decimal(n)
                                     ^~~~
/in/foo.cc:11:16: warning: character constant too long for its type
 _2pi = Decimal('6.28318530717958647692528676655900576839433879875021\
                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                                                                      
/in/foo.cc:18:20: warning: multi-character character constant [-Wmultichar]
 _z += _y / Decimal('12')
                    ^~~~
/in/foo.cc:20:20: warning: multi-character character constant [-Wmultichar]
 _z -= _y / Decimal('360')
                    ^~~~~
/in/foo.cc:22:20: warning: multi-character character constant [-Wmultichar]
 _z += _y / Decimal('1260')
                    ^~~~~~
/in/foo.cc:24:20: warning: multi-character character constant [-Wmultichar]
 _z -= _y / Decimal('1680')
                    ^~~~~~
/in/foo.cc:32:10: warning: multi-character character constant [-Wmultichar]
 print(s, 'e+', L, sep='')
          ^~~~
/in/foo.cc:32:23: error: empty character constant
 print(s, 'e+', L, sep='')
                       ^~
/in/foo.cc:1:1: error: 'from' does not name a type
 from math import *
 ^~~~