SyntaxError: invalid syntax Python issue

Question

i have a problem i want to recover the minimum and maximum Values in another function args.parse ....

so my question why [minimum:maximum] is a

SyntaxError: invalid syntax

as the minimum and maximum can be input by User

def Z(Y,minimum,maximum):
    Y = [minimum:maximum]
    return Y

Help please

i have a array [ 0.........................59887987] i want To show plot using matplotlib but Only beetween index chosen [minimum:maximum] — user2504287, Apr 26 '16 at 12:13
if Y is the list and minimum and maximum are the values, you probably need to do Y= Y[Y.index(minimum):Y.index(maximum)] (maximum excluded). If minimum and maximum are indices, just add Y. — Abhishek, Apr 26 '16 at 12:14
basically I want to extract the data from array between 2 index max and min , the value of max and min it will be inputed — user2504287, Apr 26 '16 at 12:20
Y=Y[minimum:maximum], is this what you want to do? Thanks Bro , the best answer ever =) — user2504287, Apr 26 '16 at 12:23

Noel Evans · Answer 1 · 2016-04-26T12:08:45.760

0

This line is wrong:

Y = [minimum:maximum]

It should be a tuple or something else

Y = (minimum, maximum)

You can't create a datastructure in Python like this. It is a slice but can't be instantiated like this.

edited Apr 26 '16 at 12:08

answered Apr 26 '16 at 12:07

Noel Evans

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This is like an extended version of the wonderful SyntaxError given :) – miradulo Apr 26 '16 at 12:08
Obviously it's wrong :) that's why there is an error – OneCricketeer Apr 26 '16 at 12:09

score 0 · Accepted Answer · edited May 23 '17 at 11:52

I do not fully understand what you wanted to achieve but i think is one of the following 2:

1.return a continuous range of value between minimum and maximum. In this case you can use range and do not pass Y as input param.

def Z(minimum,maximum):
    Y = range(minimum, maximum)
    return Y

print Z(2,4)

2.you want to slice Y between value at index minimum and maximum. the use the following:

def Z(Y,minimum,maximum):
    Y = Y[minimum:maximum]
    return Y

Y = [1,2,3,4,5,6,7,8,9]    
print Z(Y,2,4)

from your comment i think you want to use the version 2. so you have simply forgot to put Y before [minimum:maximum]. you have to put Y to say that this is the variable to be sliced. have a nice explanation on how slice works here

YES. I think he wanted the second – Cristas Apr 26 '16 at 12:27 — Cristas, Apr 26 '16 at 12:27

SyntaxError: invalid syntax Python issue

2 Answers2