Python operator.lt（）函数与示例

operator.lt()函数 (operator.lt() Function)

operator.lt() function is a library function of operator module, it is used to perform "less than operation" on two values and returns True if the first value is less than the second value, False, otherwise.

operator.lt()函数是运营商模块的库函数，它被用于在两个值并返回true执行“小于操作”如果第一值小于所述第二值，假，否则。

Module:

模块：

    import operator

Syntax:

句法：

    operator.lt(x,y)

Parameter(s):

参数：

x,y – values to be compared.
x，y –要比较的值。

Return value:

返回值：

The return type of this method is bool, it returns True if x is less than y, False, otherwise.

此方法的返回类型为bool ，如果x小于y ，则返回True ，否则返回False 。

Example 1:

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)))

Output:

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'>

Example 2:

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)

Output:

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