"", line 1
def f8(*x,y=3):print x,y
^
SyntaxError: invalid...]: f1(***d1)
File "", line 1
f1(***d1)
^
SyntaxError: invalid...39]: type(x)
Out[39]: NoneType
4、匿名函数lambda
lambda运算符(语法格式):
lambda args:expression
args...,l1,l2)
NameError: name 'none' is not defined
In [49]: map(None,l1,l2)
Out[49]:
[(0, 'S'),
(1, 'M...'),
(2, 'T'),
(3, 'W'),
(4, 'T'),
(5, 'F'),
(6, 'S'),
(7, None)] #两个序列元素不相等时,补None
In