def randImage(self):
randCateg = rb(len(self.categs) - 1)
randSubcat = rb(len(self.categs[randCateg]) - 1)
randIm = choice(self.categs[randCateg][randSubcat])
return randIm
#cats = Categories(2,6)
#gris = Image.open(cats.graySquare)
#encod = cats.EnStims
#recstms = cats.recStims
#trials = cats.trialslist
def randImage(self):
"""
Returns a random image path (type = str) from self.categs
Used to select stimuli for the task
...
Variables
----------
randCateg: type = int
Index of random image category in 'self.categs'
randSubcat: type = int
Index of random image subcategory in 'self.categs[randCateg]'
...
Return
------
randIm: type = str
Randomly selected image path (string) from 'self.categs'
"""
randCateg = rb(len(self.categs) - 1)
randSubcat = rb(len(self.categs[randCateg]) - 1)
randIm = choice(self.categs[randCateg][randSubcat])
return randIm
def randInsert(lst, item):
"""Insert item to random index in lst
...
Description
-----------
Inserts 'item' (can be any variable a list can contain)
in 'lst' (a list) at a random index generated by
secret.ranbelow() module imported as rb.
-cryptographically secure random values
The advantage of using this method over using built-in
list .insert() method is that randInsert() returns a
new list containing all items (from 'lst'+'item'),
while .insert() returns None. This makes it harder to
keep track of all images at any moment during experiments.
...
Parameters:
lst: list object
item: any type variable
---------------------------
Variables:
sliceIndex: type = int
A randomly generated integer where lst is sliced
lstTop: type = list
Upper slice of lst (from lst[0] to lst[sliceIndex])
'item' will be appended to lstTop after lstTop[sliceIndex].
'lstBottom' will be appended to lstTop after lstTop[item].
lstBottom: type = list
Lower slice of lst (from lst[sliceIndex] to lst[len(lst)-1])
Will be appended to 'lstTop' after lstTop[item].
----------------------------------
Return:
newlst: unidimensional list
Calls flatten(lst) to vectorize 'lstTop'
see <help(flatten)> for more details
"""
sliceIndex = rb(len(lst) - 1)
lstTop, lstBottom = lst[:sliceIndex], lst[sliceIndex:]
lstTop.append(item)
lstTop.append(lstBottom)
newlst = flatten(lstTop)
return newlst
def seed_deck(card_deck):
'''
Description:
Randomize cards
Expects:
card_deck: (list) all cards in a particular order.
Reutrns:
cd: (list) all cards after randomization.
'''
cd=[]
for card in card_deck:
v=tuple(card.split())
cd.append(Card(v[0],v[1]))
deck_size = len(cd)
for i in range(SHUFFLE_COUNT):
for element in range(deck_size):
swap_element=rb(deck_size)
cd[swap_element], cd[element] = cd[element], cd[swap_element]
return cd
def randSign():#randomly generates 1 or -1 (quadrant position)
if rb(2) == 0:
return 1
else:
return -1