Reglas de ámbito

In [5]:

    

a = 1

def f(b):
    print(a, b)
    
f(3)
a = 2
f(8)


    

    




(1, 3)
(2, 8)

In [1]:

    

a = 1

def f(b):
    a = 10
    print(a, b)
    
f(3)
print(a)


    

    




(10, 3)
1

In [2]:

    

a = []

def f(b):
    a.append(5)
    print(a, b)
    
f(3)
print(a)


    

    




([5], 3)
[5]

In [4]:

    

a = 1

def f(b):
    global a
    a = 10
    print(a, b)
    
f(3)
print(a)


    

    




(10, 3)
10

In [3]:

    

def make_func(a):
    def func(b, c):
        print(a, b, c)
    return func

f = make_func(1)
f(2, 3)


    

    




(1, 2, 3)

In [7]:

    

def make_gt_predicate(value):
    def predicate(x):
        return x > value
    return predicate
    
filter(make_gt_predicate(3), range(8))


    

    
Out[7]:





[4, 5, 6, 7]