>>> import os
>>> fileList = os.listdir('TestDir')
>>> fileList
['test1.txt', 'test10.txt', 'test11.txt', 'test2.txt', 'test23.txt', 'test28.txt']
>>> fileList.sort(key= lambda x:int(x[4:-4]))
>>> fileList
['test1.txt', 'test2.txt', 'test10.txt', 'test11.txt', 'test23.txt', 'test28.txt']
>>>

>>> import os
>>> import natsort
>>> fileList = os.listdir('TestDir')
>>> fileList
['test1.txt', 'test10.txt', 'test11.txt', 'test2.txt', 'test23.txt', 'test28.txt']
>>> fileList = natsort.natsorted(fileList)
>>> fileList
['test1.txt', 'test2.txt', 'test10.txt', 'test11.txt', 'test23.txt', 'test28.txt']
>>>

def get_file_list(file_path):
    dir_list = os.listdir(file_path)
    if not dir_list:
        return
    else:
        # 注意，這里使用lambda表達(dá)式，將文件按照最后修改時間順序升序排列
        # os.path.getmtime() 函數(shù)是獲取文件最后修改時間
        # os.path.getctime() 函數(shù)是獲取文件最后創(chuàng)建時間
        dir_list = sorted(dir_list,key=lambda x: os.path.getmtime(os.path.join(file_path, x)))
        # print(dir_list)
        return dir_list

import os
url='D:\PycharmProjects\Ambulance_Api\logs'
lists=os.listdir(url)
print(lists)
lists.sort(key=lambda fn: os.path.getmtime(url+'\\'+fn))
filepath=os.path.join(url,lists[-1])
print(filepath)

import os
img_path ='./img/'
img_list =sorted(os.listdir(img_path))    #文件名按字母排序
img_nums =len(img_list)
for i in range(img_nums):
img_name = img_path + img_list[i]
print(img_name)