Incrementing the list title name with numbers in Python

Question

I am unable to increment the number in my list name as i need a list name going from 0 to 24, i've tried to use the concatenation but it didn't work.

Folllowing is my example code:

d.last0 = [0,0]
d.last1 = [0,0]
d.last2 = [0,0]
d.last3 = [0,0]
d.last4 = [0,0]
.
.
d.last24 = [0,0]

As you see, this intialization goes till 24, what i want to do to bring this under loop so i can make the code more faster and efficient, but when i call this as

d["last_{i}"]

it didn't return any data, also tried with this:

d["last{i]".GetValue]

I'm new to python, any example to use dictionary in this scenario. — Ramiz Hasan, May 15 '20 at 08:57

score 0 · Answer 1 · answered May 15 '20 at 08:58

A way to do this is by using hash tables (dictionaries). These allow you to use a key and associate data with that key. Here is your problem solved with a dictionary in python:

d = {}
for i in range(25):
    d['last' + str(i)] = [0,0]

print(d['last24']) # prints [0,0]

If you insist on having 25 different variables, you can use the globals() keyword in python, which you can edit like this:

for i in range(25):
   globals()['last' + str(i)] = [0,0]

print(last24) # prints [0,0]

score 0 · Accepted Answer · answered May 15 '20 at 09:07

Use below dictionary code to meet your requirement,

d={}     # declare the dictionary
d['last0'] = [0,0]  #assigning the values to dictionary
print(d)  # verify for the values

# to meet your requirement to have 24 values increment, loop and update the dict
dic={}
for i in range(25):
    dic.update({'last'+str(i):[0,0]})

print(dic)

Incrementing the list title name with numbers in Python

2 Answers2