How do I replace commas in a string [closed]

Question

I want to remove all commas from a string using regular expressions, I want letters, periods and numbers to remain just commas

Answer 1

Why a regex?

mystring = mystring.replace(",", "")

is enough.

Of course, if you insist:

mystring = re.sub(",", "", mystring)

but that's probably an order of magnitude slower.