homepage

```
~ λ python3.9
Python 3.9.0a6+ (heads/master:c95e691, May 3 2020, 19:57:46) 
[Clang 11.0.0 (clang-1100033.17)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import ast
>>> ast.parse("1_2", feature_version=(3, 5))
Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
 File "/Users/shantanu/.pyenv/versions/3.9-dev/lib/python3.9/ast.py", line 50, in parse
 return compile(source, filename, mode, flags,
 File "<unknown>", line 1
 1_2
 ^
SyntaxError: Underscores in numeric literals are only supportedin Python 3.6 and greater
```