Python| time.clock_settime_ns() 方法

Time 模块的time.clock_settime_ns()方法用于设置指定时钟clk_id的时间（以纳秒为单位）。基本上， clk_id是一个整数值，表示时钟的 id。此方法类似于time.clock_settime()方法，用于设置指定时钟clk_id的时间，但以小数秒为单位。

Syntax: time.clock_settime_ns(clk_id, nanoseconds)

Parameters:
clk_id: A clk_id constant or an integer value representing clk_id of the clock.

Return type: This method does not return any value.

代码： time.clock_settime_ns()方法的使用

# Python program to explain time.clock_settime_ns() method
  
# importing time module
import time
  
  
# clk_id for System-wide real-time clock
clk_id = time.CLOCK_REALTIME
  
  
# Get the current value of
# system-wide real-time clock (in nanoseconds)
# using time.clock_gettime_ns() method
t = time.clock_gettime_ns(clk_id) 
  
print("Current value of system-wide real-time clock: % d nanoseconds" % t)
  
# Set the new value of
# time (in nanoseconds) for
# System-wide real-time clock
# using time.clock_settime_ns() method
nanosecs = 10000000
time.clock_settime(clk_id, nanosecs)
  
print("\nTime  modified")
  
  
# Get the modified value of
# system-wide real-time clock (in nanoseconds)
# using time.clock_gettime_ns() method
t = time.clock_gettime_ns(clk_id) 
print("\nCurrent value of system-wide real-time clock: % d nanoseconds" % t)

输出：

Current value of system-wide real-time clock: 1568621304462590132 nanoseconds

Time  modified

Current value of system-wide real-time clock: 10000000000180111 nanoseconds

参考： https://docs。 Python.org/3/library/time.html#time.clock_settime_ns