ramalho

"""
A ``send`` function to drive coroutines.


Driving a coroutine that does not yield interesting values:

    >>> coro_printer = printer()
    >>> _ = send(coro_printer, 10)
    got -> 10
    >>> _ = send(coro_printer, 20)

ramalho

>>> def prange(n):
...     for i in range(n):
...         print('->', i)
...         yield i
...
>>> def f(a, b, c):
...     print((a, b, c))
...
>>> f(*prange(3))
-> 0

ramalho

>>> import dis
>>> def f(x):
...     return 1+2+3+4+x
...
>>> f(5)
15
>>> dis.dis(f)
  2           0 LOAD_CONST               7 (10)
              3 LOAD_FAST                0 (x)
              6 BINARY_ADD

ramalho

Função genérica para converter valores de uma faixa de entrada para uma faixa de saída.

Exemplos de uso

Conversão de temperatura agradável de Celsius para Fahrenheit:

>>> conv(22, 0, 100, 32, 212)
71.6

ramalho

Double-click LXTerminal and type:
$ idle -n
(the IDLE window appears)
>>> from turtle import *
>>> fd(100)
(a window with a line appears)
How to draw a square:
>>> fd(100)
>>> rt(90)
>>> fd(100)

ramalho

class State(object):
    
    def __init__(self, value):
        self.value = value

    def __repr__(self):
        return '%s(%r)' % (self.__class__.__name__, self.value)

    def __str__(self):
        return state.value

ramalho

I am a happy paying customer of Dropbox, but the news that you have 
appointed Condoleezza Rice to your board is extremely disturbing and 
I will ditch your service if this decision is not reversed. 

Dr. Rice defends warrantless wiretapping. How am I supposed to trust
Dropbox with my personal files if your management cannot understand 
the implications of this appointment? And if they do understand 
-- which may well be the case -- then I am very sorry I ever shared 
any of my files with you.

ramalho

from random import shuffle



class Tombola(object):
    from inplace import pairswap  # LR: esse import é desnecessário, e este é um lugar estranho para fazer imports
    '''Sorteia itens sem repetir'''

    def carregar(self, seq):
        self.itens = list(seq)

ramalho

from random import shuffle

class Tombola(object):
    '''Sorteia itens sem repetir'''

    def carregar(self, seq):
        self.itens = list(seq)

    def misturar(self, pairswap=None):
        pairswap(self.itens) if pairswap else shuffle(self.itens) # LR: funciona mas é melhor testar explicitamente arg is None

ramalho

from random import shuffle

class Tombola(object):
    '''Sorteia itens sem repetir'''

    def carregar(self, seq):
        self.itens = list(seq)

    def misturar(self, misturadora=None):
        if misturadora:  # LR: isso funciona mas é melhor sempre testar explicitamente argumento is None