Python slicing operations

name1 = ' Zcl,pyzyz '
names = [' Zcl ', ' py ', ' zyz ']
#切片的意思就是从list里面或者字符串里面取几个元素
#切片操作对字符串也是完全适用的
# print (Names[0:2])
# #从第几个取到第几个, this is Gu Tou, ignoring the end
# print (Names[:2])
# #如果是从第一个开始取, to the end of a certain subscript, then the front can not be written
# print (names[1:])
# #如果是从前面某个开始取, take it to the end, then you can't write it at the back
# print (names[:]) #如果最前面和最后面都不写的话, take the entire list

#
Nums = List (range (1,11))
# print (Nums[1:10:2])
#如果最后面写上步长的话, is to take it every few
# Nums.reverse ()
Print (Nums)
Print (Nums[::2])
Print (Nums[::-2])
Print (Nums[::-1])
#当切片的步长为负数时, the value is taken from the end, and then taken once every
#如果步长为-1, there's a reversal function.

Python slicing operations