error: max() arg is an empty sequence

error: max() arg is an empty sequence - Printable Version

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error: max() arg is an empty sequence - kentman234 - Oct-10-2016

Hello everyone,

I'm trying to compile this code:

for idx, i in enumerate(array):
    if  idx > phaseshift:
        if  abs(i - array[idx - phaseshift]) > 1000 or True:
            self.phasespace_x.append(array[idx - phaseshift])
            self.phasespace_y.append(i + array[idx - phaseshift])
            self.linx = [max(self.phasespace_x),min(self.phasespace_x)]

where the problem was at first in array variable. It was not defined. To reduce the error in the "enumerate " line I defined array as empty list as: array=[]. Because when I defined array as integer I got an error that integer in enumerate cannot be interated .

Now I have this:

Error:
ValueError: max() arg is an empty sequence

which is quite logic I think because of empty variable array. Could you please tell me how to fix this problem?

Thank you.

RE: error: max() arg is an empty sequence - Yoriz - Oct-10-2016

You could give a default value that's returned by max If the iterable is empty.

values = []
print(max(values, default=0))

Output:
0

RE: error: max() arg is an empty sequence - kentman234 - Oct-10-2016

(Oct-10-2016, 08:17 PM)Yoriz Wrote: You could give a default value that's returned by max If the iterable is empty.
values = []
print(max(values, default=0))
Output:
0

Thank you. Problem removed. :)