python - 如何在字符的最后一个实例之后对文本文件进行排序？

Question

目标:根据最后一个斜杠之后出现的字符按字母顺序对文本文件进行排序。请注意，最后一个斜杠之前有随机数字。

文本文件的内容:

https://www.website.com/1939332/delta.html
https://www.website.com/2237243/alpha.html
https://www.website.com/1242174/zeta.html
https://www.website.com/1839352/charlie.html

期望的输出:

https://www.website.com/2237243/alpha.html
https://www.website.com/1839352/charlie.html
https://www.website.com/1939332/delta.html
https://www.website.com/1242174/zeta.html

代码尝试:

i = 0
for line in open("test.txt").readlines(): #reading text file
    List = line.rsplit('/', 1)            #splits by final slash and gives me 4 lists
    dct = {list[i]:list[i+1]}             #tried to use a dictionary 
    sorted_dict=sorted(dct.items())       #sort the dictionary

textfile = open("test.txt", "w")
for element in sorted_dict:
    textfile.write(element + "\n")
textfile.close()
   

代码不起作用。

Answer 1

我会将不同的 key 函数传递给 sorted功能。例如:

with open('test.txt', 'r') as f:
    lines = f.readlines()
    lines = sorted(lines, key=lambda line: line.split('/')[-1])

with open('test.txt', 'w') as f:
    f.writelines(lines)

参见here了解关键功能的更详细说明。