当且仅当数值落在10,000到30,000之间时，希望输出输出打印给定语句。

代码应该是;

if number >= 10000 and number <= 30000:
    print("you have to pay 5% taxes")

我添加了一个没有人提到的解决方案，使用symphony库中的Interval类:

from sympy import Interval

lower_value, higher_value = 10000, 30000
number = 20000

 # to decide whether your interval shhould be open or closed use left_open and right_open 
interval = Interval(lower_value, higher_value, left_open=False, right_open=False)
if interval.contains(number):
    print("you have to pay 5% taxes")

if number >= 10000 and number <= 30000:
    print ("you have to pay 5% taxes")

定义数字之间的范围:

r = range(1,10)

然后使用它:

if num in r:
    print("All right!")

当且仅当数值落在10,000到30,000之间时，希望输出输出打印给定语句。

代码应该是;

if number >= 10000 and number <= 30000:
    print("you have to pay 5% taxes")

你的接线员不正确。如果数字>= 10000并且数字<= 30000:则应该是。此外，Python对这类事情有一个简写，如果10000 <= number <= 30000:。