Module help

[perfringo]

It is useful to play with interactive interpreter to get inspiration:

>>> len(range(40, 90))
50

This is the number what is important in calculations. For simplification of problem we can say that we have scale 0 ... 49.

We see that some values are larger than our scale. There are also negative value. This should drive us towards remainder division.

Let's try it with different values:

>>> 0 % 50
0
>>> 1 % 50
1
>>> 50 % 50
0
>>> 60 % 50
10
>>> 200 % 50
0
>>> -1 % 50
49
>>> -100 % 50
0
>>> -120 % 50
30

We can see pattern here - we stay within 50 range, and all numbers (including negative) are distance from starting point (0).

In spoken language we can spell: needed value is reminder of division of clicks with 50 if said division is equal or large than 0 otherwise it's number of clicks.

To put it in Python we can use conditional expression:

value = item % 50 if item % 50 >= 0 else item

There are two minor adjustments needed. Our scale starts with 40 therefore we must add it to value like 40 + value. There are also strings in list but in order to make calculations we need numbers (integers).

So we may reach to such code:

clicks = ['0', '49', '74', '51', '-1', '200']

for item in clicks:
    item = int(item)
    value = item % 50 if item % 50 >= 0 else item
    print(f'The temperature is {40 + value}')

Output:
The temperature is 40
The temperature is 89
The temperature is 64
The temperature is 41
The temperature is 89
The temperature is 40

To OP: this is provided to help you to understand some basic steps in problem solving. As smart people have said: you should spend 80% of time thinking about your problem and how to solve it and 20% of time writing solution in code.