Python sympy.is_negative()方法

在simpy模块中，我们可以使用sympy.is_negative()函数测试给定的数字n是否为负数。

语法: sympy.is_negative(n)
参数 : n; 待测数
返回： bool value result

代码 #1:

# Python program to check negative number
# using sympy.is_negative() method
 
# importing sympy module
from sympy import *
 
# calling is_negative function on different numbers
geek1 = simplify(-21).is_negative
geek2 = simplify(0).is_negative
 
print(geek1)
print(geek2)

输出:

True
False

代码 #2:

# Python program to check negative number
# using sympy.is_negative() method
 
# importing sympy module
from sympy import *
 
# calling is_negative function on different numbers
geek = simplify(-002).is_negative
 
print(geek)

输出:

True