You are here: Home ‣ Dive Into Python 3 ‣
Difficulty level: ♦♦♦♦♦
❝ FIXME ❞
— FIXME
FIXME
__init__ - covered in iterators.html __repr__ - covered in ordereddict.py __str__ - covered in fractions.py __bytes__ (*) __format__
__lt__ - covered in fractions.py __le__ - covered in fractions.py __eq__ - covered in ordereddict.py, fractions.py __ne__ __gt__ - covered in fractions.py __ge__ - covered in fractions.py __bool__ - covered in fractions.py __cmp__ (*)
__getattr__ __getattribute__ __setattr__ __delattr__ __dir__
__call__
FIXME sequence intro
| Notes | You Want… | So You Write… | And Python Calls… |
|---|---|---|---|
| length of a sequence | len(seq)
| seq.__len__()
| |
| whether a sequence contains a specific value | x in seq
| seq.__contains__(x)
|
__getitem__ __setitem__ - covered in ordereddict.py __delitem__ - covered in ordereddict.py __missing__ (*)
__iter__ (*) - covered in iterators.html __next__ (*) - covered in iterators.html __reversed__ - covered in ordereddict.py
FIXME binary operator intro
| Notes | You Want… | So You Write… | And Python Calls… |
|---|---|---|---|
| addition | x + y
| x.__add__(y)
| |
| subtraction | x - y
| x.__sub__(y)
| |
| multiplication | x * y
| x.__mul__(y)
| |
| division | x / y
| x.__truediv__(y)
| |
| floor division | x // y
| x.__floordiv__(y)
| |
| modulo (remainder) | x % y
| x.__mod__(y)
| |
| floor division & modulo | divmod(x, y)
| x.__divmod__(y)
| |
| raise to power | x ** y
| x.__pow__(y)
| |
| left bit-shift | x << y
| x.__lshift__(y)
| |
| right bit-shift | x >> y
| x.__rshift__(y)
| |
bitwise and
| x & y
| x.__and__(y)
| |
bitwise xor
| x ^ y
| x.__xor__(y)
| |
bitwise or
| x | y
| x.__or__(y)
|
FIXME explain circumstances under which reflected methods will be called.
| Notes | You Want… | So You Write… | And Python Calls… |
|---|---|---|---|
| addition | x + y
| y.__radd__(x)
| |
| subtraction | x - y
| y.__rsub__(x)
| |
| multiplication | x * y
| y.__rmul__(x)
| |
| division | x / y
| y.__rtruediv__(x)
| |
| floor division | x // y
| y.__rfloordiv__(x)
| |
| modulo (remainder) | x % y
| y.__rmod__(x)
| |
| floor division & modulo | divmod(x, y)
| y.__rdivmod__(x)
| |
| raise to power | x ** y
| y.__rpow__(x)
| |
| left bit-shift | x << y
| y.__rlshift__(x)
| |
| right bit-shift | x >> y
| y.__rrshift__(x)
| |
bitwise and
| x & y
| y.__rand__(x)
| |
bitwise xor
| x ^ y
| y.__rxor__(x)
| |
bitwise or
| x | y
| y.__ror__(x)
|
FIXME explain in-place augmented assignments
| Notes | You Want… | So You Write… | And Python Calls… |
|---|---|---|---|
| in-place addition | x += y
| x.__iadd__(y)
| |
| in-place subtraction | x -= y
| x.__isub__(y)
| |
| in-place multiplication | x *= y
| x.__imul__(y)
| |
| in-place division | x /= y
| x.__itruediv__(y)
| |
| in-place floor division | x //= y
| x.__ifloordiv__(y)
| |
| in-place modulo | x %= y
| x.__imod__(y)
| |
| in-place raise to power | x **= y
| x.__ipow__(y)
| |
| in-place left bit-shift | x <<= y
| x.__ilshift__(y)
| |
| in-place right bit-shift | x >>= y
| x.__irshift__(y)
| |
in-place bitwise and
| x &= y
| x.__iand__(y)
| |
in-place bitwise xor
| x ^= y
| x.__ixor__(y)
| |
in-place bitwise or
| x |= y
| x.__ior__(y)
|
FIXME unary operator intro
| Notes | You Want… | So You Write… | And Python Calls… |
|---|---|---|---|
| negative number | -x
| x.__neg__()
| |
| positive number | +x
| x.__pos__()
| |
| absolute value | abs(x)
| x.__abs__()
| |
| inverse | ~x
| x.__invert__()
| |
| complex number | complex(x)
| x.__complex__()
| |
| integer | int(x)
| x.__int__()
| |
| floating point number | float(x)
| x.__float__()
| |
| number rounded to nearest integer | round(x)
| x.__round__()
| |
| number rounded to nearest n digits | round(x, n)
| x.__round__(n)
| |
smallest integer >= x
| math.ceil(x)
| x.__ceil__()
| |
largest integer <= x
| math.floor(x)
| x.__floor__()
| |
truncate x to nearest integer toward 0
| math.trunc(x)
| x.__trunc__()
| |
| ??? | ???
| x.__index__()
|
see http://docs.python.org/3.0/library/pickle.html: __copy__ (*) - covered in fractions.py __deepcopy__ (*) - covered in fractions.py __getnewargs__ (*) __getinitargs__ (*) __getstate__ (*) __setstate__ (*) __reduce__ (*) - covered in ordereddict.py, fractions.py __reduce_ex__ (*)
with Block__enter__ see http://docs.python.org/3.0/library/stdtypes.html#typecontextmanager __exit__
__new__ - covered in fractions.py __del__ __slots__ __hash__ - covered in fractions.py __get__ __set__ __delete__ __subclasshook__ (*) see http://docs.python.org/3.0/library/abc.html __instancecheck__ (*) see http://www.ibm.com/developerworks/linux/library/l-python3-2/ __subclasscheck__ (*)
© 2001–9 Mark Pilgrim