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# -----------------
# lambdas
# -----------------
a = lambda: 3
#? int()
a()
x = []
a = lambda x: x
#? int()
a(0)
#? float()
(lambda x: x)(3.0)
arg_l = lambda x, y: y, x
#? float()
arg_l[0]('', 1.0)
#? list()
arg_l[1]
arg_l = lambda x, y: (y, x)
args = 1,""
result = arg_l(*args)
#? tuple()
result
#? str()
result[0]
#? int()
result[1]
def with_lambda(callable_lambda, *args, **kwargs):
return callable_lambda(1, *args, **kwargs)
#? int()
with_lambda(arg_l, 1.0)[1]
#? float()
with_lambda(arg_l, 1.0)[0]
#? float()
with_lambda(arg_l, y=1.0)[0]
#? int()
with_lambda(lambda x: x)
#? float()
with_lambda(lambda x, y: y, y=1.0)
arg_func = lambda *args, **kwargs: (args[0], kwargs['a'])
#? int()
arg_func(1, 2, a='', b=10)[0]
#? list()
arg_func(1, 2, a=[], b=10)[1]
# magic method
a = lambda: 3
#? ['__closure__']
a.__closure__
class C():
def __init__(self, foo=1.0):
self.a = lambda: 1
self.foo = foo
def ret(self):
return lambda: self.foo
def with_param(self):
return lambda x: x + self.a()
#? int()
C().a()
#? str()
C('foo').ret()()
index = C().with_param()(1)
#? float()
['', 1, 1.0][index]
def xy(param):
def ret(a, b):
return a + b
return lambda b: ret(param, b)
#? int()
xy(1)(2)
# -----------------
# lambda param (#379)
# -----------------
class Test(object):
def __init__(self, pred=lambda a, b: a):
self.a = 1
#? int()
self.a
#? float()
pred(1.0, 2)
# -----------------
# test_nocond in grammar (happens in list comprehensions with `if`)
# -----------------
# Doesn't need to do anything yet. It should just not raise an error. These
# nocond lambdas make no sense at all.
#? int()
[a for a in [1,2] if lambda: 3][0]
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