What is the most idiomatic way to do the following?
def xstr(s): if s is None: return '' else: return s s = xstr(a) + xstr(b)
update: I'm incorporating Tryptich's suggestion to use str(s), which makes this routine work for other types besides strings. I'm awfully impressed by Vinay Sajip's lambda suggestion, but I want to keep my code relatively simple.
def xstr(s): if s is None: return '' else: return str(s)
If you actually want your function to behave like the
str() built-in, but return an empty string when the argument is None, do this:
def xstr(s): if s is None: return '' return str(s)
def xstr(s): return '' if s is None else str(s)