# 通过占位的形式,完成拼接 name = "黑马程序员" message = "学IT来:%s" % name print(message) # 通过占位的形式,完成数字和字符串的拼接 class_num = 57 avg_salary = 16781 message = "Python大数据学科,北京%s期,毕业平均工资:%s" % (class_num, avg_salary) print(message) name = "传智播客" setup_year = 2006 stock_price = 19.99 message = "%s,成立于:%d,我今天的股价是:%f" % (name, setup_year, stock_price) print(message) num1 = 11 num2 = 11.345 print("数字11宽度限制5,结果是:%5d" % num1) print("数字11宽度限制1,结果是:%1d" % num1) print("数字11.345宽度限制7,小数精度2,结果是:%7.2f" % num2) print("数字11.345不限制,小数精度2,结果是:%.2f" % num2)