Question

I my code I have a dictionary which has two lists combined with zip() function

self.dict = OrderedDict(zip(self.name,self.unit))

The lists are given as arguments… var=class([[1,2,4,7],["y","y","t"],[11.1,12.3,6]],name=["num1","letter","num2"])

In one point there should be a function which checks if the items in the each brackets has numbers only. for example int=[1,2,3]
if that’s true the program calculates the average for each number only list. And prints out the values as num1 = 3.5 num2 = 9.8 (as a table):

num1   num2
 3.5    9.8

First I make a new list using this:

for i in range(len(self.unit)):
                    if  all(isinstance(item, (int,float)) for item in self.unit[i]):
                        self.new_l.append(self.unit[i])

After that I (in another function) create a new list called self.sum_l in which put in the average of each number list in a new list of lists (In this example i get two averages).

self.sum_l.append([sum(self.new_1[i])/float(len(self.new_1[i]))])

After that I make a new dictionary which uses the self.name and the self.sum_1 lists

 self.nov_slovar = OrderedDict(zip(self.ime, self.seznam_vsot))

Which works fine, but the PROBLEM I’m facing is… when I create a new dictionary the code takes as much elements out of list name when forming a new dictionary, as there are lists in the self.sum_1 list. But the thing is, it takes the first two (in my case). And that makes the output absolutely incorrect:

num1   letter
 4.6    9.8

So my question is, what should I do to prevent that from happening. I’ve tried many things. Even trying to calculate the sum of values in a dictionary, but I’m getting errors

Answer 1

from __future__ import division

self.nov_slovar = {}
for key, value in self.dict.iteritems():
    try:
        self.nov_slovar[key] = sum(value)/len(value)
    except TypeError:  # can't sum non-numbers; skip those
        pass