Python：我想重命名多个文件夹，其名称中的日期已修改

Question

我想重命名多个文件夹。

示例文件夹结构：

Main_Folder|
           |winter(2017-12-18)
           |summer(2018-03-26)

很多时候我将许多图片保存到许多不同的文件夹中，但是我不记得我将图片保存到哪个文件夹中。

我要实现的示例：

夏天（2018-03-26）当我将新图片保存到该文件夹​​并运行程序时 ，我希望程序将该文件夹重命名为summer（2018-08-14）<-这是该文件夹的修改日期

import os
import datetime

def modifiedFolderName(folderdir):
target = folderdir 
allFolder = os.listdir(target)

for foldername in allFolder:
    checkname = foldername.find("(")
    if checkname != -1 #if that folder don't have modified date skip it
        #need help here 
        time = os.path.getmtime(foldername)
        #
        #
        #
        os.rename(foldername,trimFolderName(foldername)+"("+"new modified date"+")")





def trimFolderName(foldername):
    a1 = foldername
    b1 = a1.find("(")
    a2 = a1[0:b1]

    return a2 #return folder name without modified date


def main():
    modifiedFolderName("") #for folder dir
if __name__ == "__main__":
    main()

Answer 1

参考文献：

• https://docs.python.org/3.5/library/datetime.html#datetime.datetime.fromtimestamp
• https://docs.python.org/3.5/library/datetime.html#datetime.datetime.strftime
• https://docs.python.org/3.5/library/datetime.html#strftime-strptime-behavior

解决方案：

time = os.path.getmtime(foldername)
lastModified = datetime.datetime.fromtimestamp(time)
lastModifiedStr = lastModified.strftime("(%Y-%m-%d)")
    # just for debugging, to see what it is doing
print("Last modified: %s", lastModifiedStr)
newFolderName = trimFolderName(foldername)+lastModifiedStr
os.rename(foldername, newFolderName)