Question number 74
I did not under stand.
If we try to update a variable that is not yet assigned any value i.e. it doesn’t exist, you get an error, because Python evaluates the right side before it assigns a value to a.
Therefore, before updating, we need to initialize the variable.
:“Yet not assigned any value”
Which value are you talking??
We are talking about cases where we are updating a variable with a value calculated using the variable itself.
See the examples in the slide.
For example, here:
X = 4*X + 5
it is written "Value goes right to left in order Python evaluates the right side before it assigns a value to a"
What does this statement mean??
x =4* x + 5
will the python check num ‘5’ on the right side and then it goes to next variable “x”??
if the value is 5 then it goes further, right??
Please clarify.
Please run some tests by yourself to clear doubts. The Python interpreter can better answer your such doubts.