Calling on a variable using two concatenated strings Python

August 8, 2024

Sorry for the lack of detail as I am a beginner in python:

c1 = c2 = c3 = c4 = c5 = False

x = int(input("Enter a number 1-5: "))  

if x > 5 or x < 1:
  print("Your number must be between 1 and 5")
else:
  "c", x = True

Line 8 is where you would concatenate the 2 strings.

I’m not sure if I’m being clear enough or whether this is even possible in Python but it would be amazing if someone more experienced could respond.

I’ve looked gone through pages of questions and still haven’t found anything related to what I’m trying to do. Same with Youtube.

>Solution :

Use a list instead of a pile of variables:

c = [False] * 5

x = int(input("Enter a number 1-5: "))  

if x > 5 or x < 1:
  print("Your number must be between 1 and 5")
else:
  c[x-1] = True

Also you should be aware that string literals (e.g. "c") don’t mix well with variable names. If you want to use a string as a way to identify a variable use a dict.

Added to address the issue of scaling. A defaultdict can be useful as an analog to a sparse array.

from collections import defaultdict

c = defaultdict(lambda: False)
x = int(input("Enter a number 1-500000: "))  

if x > 500000 or x < 1:
  print("Your number must be between 1 and 500000")
else:
  c[x] = True