Coherence of the module

I write here because the original bitarray is dead ()

I know that is outside the spec but is a strange behaviour

In : bitarray([True, False])
Out: bitarray('10')

In : bitarray('1') + bitarray('0')
Out: bitarray('10')

In : bitarray('1') + True
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-93-3d90d100a032> in <module>()
----> 1 bitarray('1') + True

TypeError: could not extend bitarray

In : bitarray(True)   # here it interprets True as the integer 1  => int(True)
Out: bitarray('1')

In : bitarray(False)
Out: bitarray()

In : a = 2 * bitarray('1') + 2 * bitarray('0') + 2 * bitarray('1') + bitarray(False) + bitarray(True)
In : a
Out: bitarray('1100111')
# it misses the false because it evaluate as bitarray() -> zero length

also

a = 10 * bitarray('1')

In : a
Out: bitarray('1111111111')

In : a[5] = '0'

In : a
Out: bitarray('1111111111')

another 'strange' behaviour

a = 10 * bitarray('0')

In [116]: a
Out[116]: bitarray('0000000000')

In [117]: a[5:6] = 10 * bitarray('1')   # is normal to extend by default?? this is like an oveflow??)

In [118]: a
Out[118]: bitarray('0000011111111110000')

another thing why have a length property when you can use the buildin len() function?

a = 10 * bitarray('0')

In [28]: len(a)
Out[28]: 10

In [29]: a[5:6] = bitarray('11')

In [30]: len(a)
Out[30]: 11