adding numbers in a list - Printable Version

adding numbers in a list - Printable Version

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adding numbers in a list - Nickd12 - Jan-15-2021

what im looking to do is add 25 to elements in a list but add 25 plus the last number

example

list = [0,0,0,0]

i want the output to be

list = [0,25,50,75]

RE: adding numbers in a list - bowlofred - Jan-15-2021

25 plus the last number plus the spot on the first list? What would be the answer if the first list were [5, 10]?

RE: adding numbers in a list - Serafim - Jan-15-2021

If I follow the example

>>> def add_num_to_list(lst, num):
...     new_list = [lst[0]]
...     for i in lst[1:]:
...         new_list.append(i+num+new_list[-1])
...     return new_list
... 
>>> print(add_num_to_list([0,0,0,0], 25))
[0, 25, 50, 75]
>>> print(add_num_to_list([5,10], 25))
[5, 40]

Where the last printout is an answer to the question asked by @bowlofred

But if I follow the text description:

>>> def add_num_to_list(lst, num):
...     new_list = []
...     for i in lst:
...         new_list.append(i+num+(new_list[-1] if new_list else 0))
...     return new_list
... 
>>> print(add_num_to_list([0,0,0,0], 25))
[25, 50, 75, 100]
>>> print(add_num_to_list([5,10], 25))
[30, 65]
>>>