从字符串中提取5位或6位数字

\d{5,6}

const str = "abc12345def67890ghi";
const regex = /\d{5,6}/g;
const matches = str.match(regex);
console.log(matches); // 输出 ["12345", "67890"]

import re

str = "abc12345def67890ghi"
regex = r"\d{5,6}"
matches = re.findall(regex, str)
print(matches) # 输出 ['12345', '67890']