(s)
Return 's is blank or represents an int
Return 's is blank or represents an int
Return s is blank or represents an int
def is_int(s):
    "Return 's is blank or represents an int'"
    if not s:
        return True
    try:
        int(s)
        return True
    except ValueError:
        return False
def is_int ( s ) : if not s : return True try : int ( s ) return True except ValueError : return False