How could I select a variable with an input and than change its value, this is the best that I could come up with but it doesn't seem to work.
itm1 = 1
itm2 = 1
x = raw_input()
x += 1
print (itm1)
I'm trying to get it so that anyone of the variables could be changed depending on the input.
It's possible, but you really shouldn't do that in most cases. Nicer way is to store the parameters in a dictionary and do something like:
d = {
'itm1': 1,
'itm2': 1,
}
x = raw_input()
d[x] += 1
print (d['itm1'])
If you really need to change the local variables and have a good reason not to rewrite it to a proper collection, you can use this: (but it's fugly)
locals()[x] += 1
What do you want to do exactly?
If you want to add the input value to an existing variable you can just do this:
itm1 = 1
itm2 = 1
x = raw_input()
itm1 += x
print (itm1)
Your question is unclear regarding the aim. If you want to select one variable to change depending on the input, you can try this:
itm = [1, 1]
x = raw_input()
itm[x] += 1
print(itm[x])
Of course this assumes you're entering a value in the bounds of the aray indices.
Or you can define a dictionary
y = {"itm1": 1, "itm2": 1}
x = raw_input()
y[x] += 1
print( y[x] )
You could use 'exec'. This takes variable name through raw_input and executes "variable += 1"
itm1 = 1
itm2 = 1
exec(raw_input()+'+=1')
print(itm1)
But this isn't the best method. Use dictionaries or lists instead
itm1,itm2as keys. You can getitm1as input and change the values