diff options
Diffstat (limited to 'Demo/parser/unparse.py')
| -rw-r--r-- | Demo/parser/unparse.py | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/Demo/parser/unparse.py b/Demo/parser/unparse.py index 56728734c7..2c383a5eac 100644 --- a/Demo/parser/unparse.py +++ b/Demo/parser/unparse.py @@ -302,16 +302,17 @@ class Unparser: self.write("`") def _Num(self, t): - # There are no negative numeric literals in Python; however, - # some optimizations produce a negative Num in the AST. Add - # parentheses to avoid turning (-1)**2 into -1**2. - strnum = repr(t.n) - if strnum.startswith("-"): - self.write("(") - self.write(strnum) - self.write(")") - else: - self.write(strnum) + # Add parentheses around numeric literals to avoid: + # + # (1) turning (-1)**2 into -1**2, and + # (2) turning 3 .__abs__() into 3.__abs__() + # + # For (1), note that Python doesn't actually have negative + # numeric literals, but (at least in Python 2.x) there's a CST + # transformation that can produce negative Nums in the AST. + self.write("(") + self.write(repr(t.n)) + self.write(")") def _List(self, t): self.write("[") |