_regex_core.py 文件源码

def get(self):
        string = self.string
        pos = self.pos

        try:
            if self.ignore_space:
                while True:
                    if string[pos].isspace():
                        # Skip over the whitespace.
                        pos += 1
                    elif string[pos] == "#":
                        # Skip over the comment to the end of the line.
                        pos = string.index("\n", pos)
                    else:
                        break

            ch = string[pos]
            self.pos = pos + 1
            return ch
        except IndexError:
            # We've reached the end of the string.
            self.pos = pos
            return string[ : 0]
        except ValueError:
            # The comment extended to the end of the string.
            self.pos = len(string)
            return string[ : 0]