Python operator.lt()用法及代码示例

operator.lt() 函数

operator.lt()函数是一个库函数operator模块，用于对两个值执行“小于操作”并返回True如果第一个值小于第二个值，False，否则。

模块：

    import operator

用法:

    operator.lt(x,y)

参数：

• x,y– 要比较的值。

返回值：

这个方法的返回类型是bool，它返回True如果x小于y，False，否则。

范例1：

# Python operator.lt() Function Example

import operator

# integers
x = 10
y = 20

print("x:",x, ", y:",y)
print("operator.lt(x,y):", operator.lt(x,y))
print("operator.lt(y,x):", operator.lt(y,x))
print("operator.lt(x,x):", operator.lt(x,x))
print("operator.lt(y,y):", operator.lt(y,y))
print()

# strings
x = "Apple"
y = "Banana"

print("x:",x, ", y:",y)
print("operator.lt(x,y):", operator.lt(x,y))
print("operator.lt(y,x):", operator.lt(y,x))
print("operator.lt(x,x):", operator.lt(x,x))
print("operator.lt(y,y):", operator.lt(y,y))
print()

# printing the return type of the function
print("type((operator.lt(x,y)):", type(operator.lt(x,y)))

输出：

x:10 , y:20
operator.lt(x,y): True
operator.lt(y,x): False
operator.lt(x,x): False
operator.lt(y,y): False

x:Apple , y:Banana
operator.lt(x,y): True
operator.lt(y,x): False
operator.lt(x,x): False
operator.lt(y,y): False

type((operator.lt(x,y)): <class 'bool'>

范例2：

# Python operator.lt() Function Example
import operator

# input two numbers
x = int(input("Enter first number:"))
y = int(input("Enter second number:"))

# printing the values
print("x:",x, ", y:",y)

# comparing
if operator.lt(x,y):
  print(x, "is less than ", y)
else:
  print(x, "is not less than ", y)

输出：

RUN 1:
Enter first number:10
Enter second number:20
x:10 , y:20
10 is less than  20

RUN 2:
Enter first number:20
Enter second number:10
x:20 , y:10
20 is not less than  10