Python Forum

Hello, here's my program:

oooooo =['fg', 'dh', 'df', 'hg', 'sd', 'hnb', 'eee', 'rh', 'ddd', 'vvvv']
aaaaaaa = [542, 861,532,7854,2213,45612,7865,1535,453,452]
bbbbbb = [8888,7777,4444,1111,2222,333,555,444,123,453]
ccccc = [8888,666,555,4444,222,555,666,444,111,222]
fffff = [444,555,555,555,666,8888,4444,8888,4444,77777]
abcd = [oooooo]+[aaaaaaa] +[bbbbbb]+[ccccc]+ [fffff]




def ppp(x, y):
    return ((y - x)/x)* 100

def iii(*e):
        xx = []
        yy= []
        zz = []
        for i in range(len(e[0])):
            xx += [ppp(e[1][i], e[2][i])]
        for j in range(len(e[0])):
            yy += [ppp(e[2][j], e[3][j])]
        for l in range(len(e[0])):
            zz += [ppp(e[3][l], e[4][l])]
        return xx, yy, zz

And here what I get with >>> iii(abcd):

Error:
Traceback (most recent call last):
  File "<pyshell#125>", line 1, in <module>
    iii(a)
  File "C:/Python34/poiuy.py", line 19, in iii
    xx += [ppp(e[1][i], e[2][i])]
IndexError: tuple index out of range

I don't understand why my list is called a tuple because there are no () but [] and I don't understand why the index is out of range while it shouldn't because 0 =< i < 10, and the length of the lists = 10.

I would like someone to help me please, thank you!

First of all - get rid of habit to use cryptic variable names as soon as possible... Your variable names are plain nightmare....
As to your question - look at line 14: def iii(*e):
By using star in front of e, you make e a catch-all argumenmt, i.e. it turns to be a tuple that holds what you pass as arguments. In your case you pass a single list of lists, so it becomes a single element tuple. That is why e[1] on line 19 raise that exception. Add

print(type(e))
print(e)

to see for yourself.
Finally, read https://python-forum.io/Thread-Basic-Nev...n-sequence