Issues with numbers choices

Coding
1

Hello,
we are three french students who use psychopy for the first time. We would like to create several sequences of characters in which we have 3 to 5 letters and one number between 0 to 9. But we would like to have a different number between each sequence. We have succeed to create the sequences of characters but we got the same number several times. How can we manage this ?

2

Hey @Noemie_P,

Can you share your code so we can take a look?

3

Yes sure !
The routine “chiffre” is the routine we used to display numbers. It is mentioned in lines 203 and 525. expérience1.py (17.0 KB)

4

If you don’t want your numbers to be repeated, maybe you can force your text_2 to pick a unique number in the sequence 0-9. Because your sequence is short, randrange is likely to pick the same number more than once.

You can create a vector with your sequence and then pop the ones you already used every loop:

# outside loop - vector preparation:
set_of_numbers = []
for k in range(0,10): 
	set_of_numbers.append(k)
random.shuffle(set_of_numbers)

# inside loop, every iteration:
text_2.setText(set_of_numbers.pop(0))

This will destroy your set_of_numbers variable, but it will make sure no number is repeated.

5

It’s working, thanks a lot !

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