List Slicing in Python Without Using Built
I'm very new to programming and am currently stuck on a practice problem involving list slicing without using the built-in function, so the idea is that you create your own slice function to be called upon by the user. Below is the question and following that is my attempt to solve it. Any help is appreciated. Thank you!
Python provides slicing functionality for lists, but for this question, you will implement your own function capable of producing list slices (note: you cannot use the slicing operator in your solution). The function should be called slice and take the following three inputs in this specific order:
If the parameter values are acceptable, your function will return a list that contains the items from source beginning at the index start and ending at the index end (inclusive). This is different from the Python slice operator, as the item at the index end is also included in the new list.
Examples:
mylist = ["A", "B", "C", "D", "E", "F", "G", "H", "I", "J"]
slice(mylist, 0, 9) should be ["A", "B", "C", "D", "E", "F", "G", "H", "I", "J"] slice(mylist, 3, 4) should be ["D", "E"]
slice(mylist, 4, 3) should be [ ]
slice(mylist, 3, 8) should be ["D", "E", "F", "G", "H", "I"]
slice(mylist, 4, 4) should be ["E" ]
My code:
source=int(input("Enter a list: "))
start=int(input("Enter the starting digit: "))
end=int(input("Enter the ending digit: "))
def slice(source,start,end):
if start is not [0, len(source)-1]:
print()
elif end is not [start, len(source)-1]:
print()
source.append(0,start)
source.append(len(source),end)
slice[]
想象出它自己，谢谢你试图帮助，而不是居高临下@lmiguelvargasf我真的很感激。
start = int(input(" Enter the starting index of the slice you will create: "))
end = int(input("Enter the ending index of the slice you will create: "))
def slice(source, start, end):
myList = []
for i in range(start, end+1):
if start in range(0, len(source)) and end in range(start, len(source)):
myList.append(source[i])
return myList
myList = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J'] #This is the source
print(slice(myList,start,end))