Question

I am trying to improve my existing code, is there any way to affect multiples different variables without using dict or lists or tuples??
I am trying to write something like:

number1 = 1
number2 = 2
number3 = 3

for i in (1,2,3):
    number{i} += 1

and then have number1 = 2 number2 = 3 and number3 = 4

i was thinking about formatting string but it doesn’t work, thx for reading.

Answer 1

A better approach here would be to use dictionary :

In [26]: numbers={'number1': 1,
   ....:          'number2' : 2,
   ....:           'number3' : 3}

In [27]: for i in (1,2,3):
   ....:         numbers['number'+str(i)]+=1
   ....: 

In [28]: numbers['number1']
Out[28]: 2

In [29]: numbers['number2']
Out[29]: 3

In [30]: numbers['number3']
Out[30]: 4

otherwise you can also you globals():

In [31]: number1 = 1

In [32]: number2 = 2

In [33]: number3 = 3

In [34]: for i in (1,2,3):
   ....:     globals()['number'+str(i)]+=1
   ....:     
   ....:     

In [35]: number1
Out[35]: 2

In [36]: number2
Out[36]: 3

In [37]: number3
Out[37]: 4