从类名中获取编号

import re

class_name = "类名-123"
pattern = r"\d+"
match = re.search(pattern, class_name)
if match:
    number = match.group()
    print("编号为:", number)
else:
    print("未找到编号")

class_name = "类名_123"
split_result = class_name.split("_")
if len(split_result) > 1:
    number = split_result[-1]
    print("编号为:", number)
else:
    print("未找到编号")