The following fragment of code from this tutorial: http://www.raywenderlich.com/24252/beginning-game-programming-for-teens-with-python
for badguy in badguys:
if badguy[0]<-64:
badguys.pop(index)
badguy[0]-=7
index+=1
for badguy in badguys:
screen.blit(badguyimg, badguy)
is giving me a :
TypeError: 'tuple' object does not support item assignment
I understand that this could be becuse badguy
is a tuple. This means it is immutable(you can not change its values) Ive tried the following:
t= list(badguy)
t[0]= t[0]-7
i+=1
I converted the tuple to a list so we can minus 7. But in the game nothing happens.
Does any one know what I could do?
Thanks.
Change this
badguy[0]-=7
into this
badguy = list(badguy)
badguy[0]-=7
badguy = tuple(badguy)
Alternatively, if you can leave badguy
as a list
, then don't even use tuples and you'll be fine with your current code (with the added change of using lists instead of tuples)
Another solution is instead of
badguy[0] -= 7
to do
badguy = (badguy[0] - 7,) + badguy[1:]
This creates a new tuple altogether with the updated value in the zeroth element.
你可以做一个 np.copy() 并与她一起工作。
badguy_copy = np.copy(badguy)
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