追加函数在 for 循环 Python 3 中不起作用

Question

I have a for loop running that creates a new list of select Unix times from elements of another list containing multiple Unix times, the index of those elements is in turn given by another list. My problem is that within this for loop the append function is not working and I have no idea why as I get no errors. The print function is simply ignored after the for loop. I'm not sure what I'm doing wrong. Could someone help me out?

Here is my code:

adjusted_exc_pass_numbers = [0, 6, 9, 16, 19, 22, 25, 32, 35, 41, 48]
processed_start_times = [1519275660, 1519287600, 1519325040, 1519336920, 1519360080, 1519365900, 1519371900, 1519409400, 1519415340, 1519421280, 1519450260, 1519456200, 1519499700, 1519534680, 1519540560, 1519546620, 1519584060, 1519596000, 1519619160, 1519624920, 1519630920, 1519668420, 1519674360, 1519680360, 1519709340, 1519715220, 1519758720, 1519793760, 1519799580, 1519805700, 1519843080, 1519855020, 1519878180, 1519884000, 1519890000, 1519927500, 1519939380, 1519968360, 1519974300, 1520017800, 1520052780, 1520058660, 1520064720, 1520102160]
ppst = []
for element in range(len(adjusted_exc_pass_numbers)):
    ppst.append(processed_start_times[int(adjusted_exc_pass_numbers[element])])
print(ppst)

When I run this, print is ignored and the rest of the code executes as if the statement was not there. I don't understand why it is not appending or printing.

Thank you for your time.

Answer 1

When I run this code I get an IndexError at the line

ppst.append(processed_start_times[int(adjusted_exc_pass_numbers[element])])

The reason for this is because as you are iterating, element will be 0,1,2,3..., adjusted_exc_pass_numbers[element] will be 0,6,9,16,..., and eventually you will be trying to get index 48 from processed_start_times , a list which only has 44 entries. Not sure why you are completing the loop without any errors but this is the problem as far as I can tell.