this is a question about python programming I have a list li

this is a question about python programming

I have a list like this

how to make a list like [the average value of 0-11, the average value of 12-23, ......] using a function : annual_average(L):

#the list have 1008 values

Solution

Below is sample code how you can do that. I am just storing some values in my \'mainlist\' variable. You can load it with your data and use this code . Please do rate the answer if it helped. Thank you ver much.

#function to return the average for a list of elements, pass 12 elements to get annual average
def annual_average(list1):
print list1
avg=sum(list1)/float(len(list1)) #convert to float so that we dont loose the fraction part
return avg

#this is the main list containing data from file , load it from file
mainlist=[2,3,5,4,6,7,1,8,9,5,6,3,242,22,44,11,4,56,3,1,6,3,1,6,2,1,6,4];
output=[] #this is the output list containg averages for 0-11,12-23,24-35 etc, initially empty

i=0

while i< len(mainlist):
sublist=mainlist[i:i+12] #make a sublist from the mainlist
avg=annual_average(sublist) #calculate average using the function
output.append(avg) #append this new average into output list
i=i+12 #increment i by 12 so that we can next set of values in next iteration

print \"The list of annual averages is \",output

output

[2, 3, 5, 4, 6, 7, 1, 8, 9, 5, 6, 3]                                                                                                                                                                                      

[242, 22, 44, 11, 4, 56, 3, 1, 6, 3, 1, 6]                                                                                                                                                                                

[2, 1, 6, 4]                                                                                                                                                                                                              

The list of annual averages is  [4.916666666666667, 33.25, 3.25]