str=‘https://www.cnblogs.com/tingtin/p/12566356.html‘
#从后往前取
print(‘0: %s‘%str.split(‘/‘)[-1])#取最后
print(‘1: %s‘%str.split(‘/‘)[-2])#倒数第二个
print(‘2: %s‘%str.split(‘/‘)[-3])
print(‘3: %s‘%str.split(‘/‘)[-4])
print(‘4: %s‘%str.split(‘/‘)[-5])
print(‘5: %s‘%str.split(‘/‘)[-6])
print(‘............................‘)
#从前往后切
print(‘6: %s‘%str.split(‘/‘,-1))#全切
print(‘7: %s‘%str.split(‘/‘,0))#不切
print(‘8: %s‘%str.split(‘/‘,1))#切一刀
print(‘9: %s‘%str.split(‘/‘,2))
print(‘10: %s‘%str.split(‘/‘,3))
print(‘11: %s‘%str.split(‘/‘,4))
print(‘12: %s‘%str.split(‘/‘,5))
print(‘13: %s‘%str.split(‘/‘,6))
0: 12566356.html
1: p
2: tingtin
3: www.cnblogs.com
4:
5: https:
............................
6: [‘https:‘, ‘‘, ‘www.cnblogs.com‘, ‘tingtin‘, ‘p‘, ‘12566356.html‘]
7: [‘https://www.cnblogs.com/tingtin/p/12566356.html‘]
8: [‘https:‘, ‘/www.cnblogs.com/tingtin/p/12566356.html‘]
9: [‘https:‘, ‘‘, ‘www.cnblogs.com/tingtin/p/12566356.html‘]
10: [‘https:‘, ‘‘, ‘www.cnblogs.com‘, ‘tingtin/p/12566356.html‘]
11: [‘https:‘, ‘‘, ‘www.cnblogs.com‘, ‘tingtin‘, ‘p/12566356.html‘]
12: [‘https:‘, ‘‘, ‘www.cnblogs.com‘, ‘tingtin‘, ‘p‘, ‘12566356.html‘]
13: [‘https:‘, ‘‘, ‘www.cnblogs.com‘, ‘tingtin‘, ‘p‘, ‘12566356.html‘]
split("/")[-1] 和 split("/",-1)的区别
原文：https://www.cnblogs.com/tingtin/p/12568611.html