create list of Boolean's list

Question

I need to get the following: ([[True, True, False, False, False, False],[ False, False,True, True, False, False],[False, False, False, False,True, True, ]])

I wrote the following:

def create_bool():
    x_bool =[True, True, False, False,
                     False, False]
    arr_bool = []
    for i in range(3):
        arr_bool.append(x_bool)
        print(arr_bool)
        x_bool[:] = x_bool[-2:] + x_bool[0:-2]
        i+=1
    return arr_bool

but I got:([[True, True, False, False, False, False], [True, True, False, False, False, False], [True, True, False, False, False, False]])

Your rotation is off slightly: x_bool = x_bool[-2:] + x_bool[:-2] — 001
– 001, Commented Nov 30, 2020 at 15:38
Why not just arr_bool = [[True, True, False, False, False, False],[ False, False,True, True, False, False],[False, False, False, False,True, True, ]]? — Viktoriya Malyasova
– Viktoriya Malyasova, Commented Nov 30, 2020 at 15:38
This is a simple example (real case may contain up to 10000 of True/ False) — Daria Tikhonova
– Daria Tikhonova, Commented Nov 30, 2020 at 16:35

Jorge Ramón · Accepted Answer · 2020-11-30 15:41:56Z

1

you need to delete the index of x_bool set statement, and comment the i+=1. In a for loop the i automatically increases.

def create_bool():
    x_bool =[True, True, False, False, False, False]
    arr_bool = []
    for i in range(3):
        arr_bool.append(x_bool)
        x_bool = x_bool[-2:] + x_bool[0:-2]
        #i+=1
    
    print(arr_bool)
    
create_bool()

Output:

[[True, True, False, False, False, False], [False, False, True, True, False, False], [False, False, False, False, True, True]]

answered Nov 30, 2020 at 15:41

Jorge Ramón

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