Python os.path.getmtime()

Python os.path.getmtime() 方法用于获取指定路径的最后一次修改时间。此方法返回一个浮点值，表示自epoch以来的秒数。如果文件不存在或无法访问，此方法将引发OSError异常。

注意:epoch表示时间开始的点。它是平台相关的。对于Unix, epoch是1970年1月1日00:00:00 (UTC)。

语法: os.path.getmtime(路径)

参数:

path:表示文件系统路径的类路径对象。类路径对象可以是 string 或 bytes 对象，表示路径。

返回类型: 此方法返回类“float”的浮点值，该值表示最后一次修改指定路径的时间(以秒为单位)。

示例1

使用os.path.getmtime()方法

# Python program to explain os.path.getmtime() method
   
# importing os and time module
import os
import time
 
# Path
path = '/home/User/Documents/file.txt'
 
# Get the time of last
# modification of the specified
# path since the epoch
modification_time = os.path.getmtime(path)
print("Last modification time since the epoch:", access_time)
 
# convert the time in
# seconds since epoch
# to local time
local_time = time.ctime(modification_time)
print("Last modification time(Local time):", local_time)

输出:

Last modification time since the epoch: 1558447897.0442736
Last modification time (Local time): Tue May 21 19:41:37 2019

示例2

使用os.path.getmtime()方法时的错误处理

# Python program to explain os.path.getmtime() method
   
# importing os, time and sys module
import os
import sys
import time
 
# Path
path = '/home/User/Documents/file2.txt'
 
# Get the time of last
# modification of the specified
# path since the epoch
try:
    modification_time = os.path.getmtime(path)
    print("Last modification time since the epoch:", modification_time)
 
except OSError:
    print("Path '%s' does not exists or is inaccessible" %path)
    sys.exit()
 
# convert the time in
# seconds since epoch
# to local time
local_time = time.ctime(modification_time)
print("Last modification time(Local time):", local_time)
 
 
# above code will print
# path does not exists or is inaccessible'
# if the specified path does not
# exists or is inaccessible

输出:

Path '/home/User/Documents/file2.txt' does not exists or is inaccessible