Putting variables in the lists in Python -


i ask how can use variables define size of array in python (i mean list).i have written piece of code below , please let me know wrong code? thanks..

   elif(op=='+') :      size=int(input("please enter how many numbers want add"))      x in range(0,size):      print("please enter number",x+1)       inp=(input())       num[x]=inp #<<<-----the error comes when trying run expression    z in range(0,size):      num[z]=num[z]+num[z+1]        print("the result " , num[size])

besides problem in inp @daniel answers, result of input() string. thus, code concatenate numbers go through list. additionally, why putting concatenation list? when going range, appending entered number of digits, index operation goes 0 index "size" index 1 more in list.

 z in range(0,size):      num[z]=num[z]+num[z+1]      print("the result " , num[size])

thus when z == size -1, index out of range when attempting reference num[z+1] in final print tries reference num[size]

additionally, if going adding rather concatenating input string, should saying inp = int(input())

size=int(input("please enter how many numbers want add")) mytotal = 0 x in range(0,size):     # next 2 have been on 1 line     myval = int(input("please enter number"))     mytotal += myval #this split clarity print mytotal

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