dictionary x[0:1] only gives me x[0]

Question

when doing a decryptor, I can't solve this one problem. i sign two numbers to a letter using a dictionary. The problem is that it only signs one number

szyfr={x[0:1]:'a', x[2:3]:'b',x[4:5]:'c', x[6:7]:'d'}

x stores 54 numbers saved in a file and that's the key. The problem is, that when i print this dict, It says this:

{'1': 'a', '3': 'b', '9': 'c', '6': 'd', '': ' '}

the first one currently should have been "14" and the second should have been "37"

Has anyone been in a similar problem before? (Sorry if I'm doing something wrong but it's my first post here and English is my second language)

Answer 1

Python list slicing does not include the element of the last index of the slice.

You need to change it to szyfr={x[0:2]:'a'...} to get {'14': 'a',} and so on..