[Regexes] Stripping puctuation from a text

[shabda raaj]

I want to strip punctuation from text.

So I am trying,

>>> p = re.compile('[a-zA-Z0-9]+')
>>> p.sub('', 'I love tomatoes!! hell yeah! ... Why?')
'  !!  ! ... ?'

Which gave me all the chars which I want to replace.

So Next I tried by negating the regex,

>>> p = re.compile('^[a-zA-Z0-9]+')
>>> p.sub('', 'I love tomatoes!! hell yeah! ... Why?')
' love tomatoes!! hell yeah! ... Why?'

But this removed the first char instead of the puctuation. So I guess
^ is matching start of line, instead of negation. How can I take
negation of the regex here?