这里不定的意思是: 预先并不知道,函数使用者会传递多少个参数给你,所在在这个场景下使用这两个关键字。 *args (arguments)表示任何多个无名参数, 它本质上是一个 tuple ** kwargs (keyword arguments)表示关键字参数, 它本质上是一个 dict 注意:使用时必须要求 *args 参数列要在** kwargs 前面 【因为位置参...
We define the arbitrary arguments while defining a function using the asterisk (*) sign. def fruits(*fnames): """This function displays the fruit names""" # fnames is a tuple with arguments for fruit in fnames: print(fruit) fruits("Orange","Banana","Apple","Grapes") Output: In the...
myfun(*tuple) does exactly what you request. reference: http://stackoverflow.com/questions/1993727/expanding-tuples-into-arguments
group) Help on built-in function group: group(...) group([group1, ...]) -> str or tuple. Return subgroup(s) of the match by indices or names. For 0 returns the entire match. In [63]: mat1.group() #匹配到的全部字符串 Out[63]: 'lo' In [66]: mat1.group(0) #匹配到的...
logger.opt(lazy=True).debug("If sink level <= DEBUG: {x}",x=lambda:expensive_function(2**64))# By the way,"opt()"serves many usages logger.opt(exception=True).info("Error stacktrace added to the log message (tuple accepted too)")logger.opt(colors=True).info("Per message <blue>co...
s1 = {None}# 集合print(type(c))# 空集合 <class 'dict'>print(type(d))# <class 'tuple'>print(type(s))# 空集合 <class 'set'> 一类是generator,包括生成器和yield关键字的生成器函数generator function。 ⽣成器不但可以作⽤于for循环,还可以被next()函数不断调⽤并返回下⼀个值,...
Exiting a Function Returning Data to the Caller Revisiting Side Effects Variable-Length Argument Lists Argument Tuple Packing Argument Tuple Unpacking Argument Dictionary Packing Argument Dictionary Unpacking Putting It All Together Multiple Unpackings in a Python Function Call Keyword-Only Arguments Positional...
For example, the my_function(x, y) takes two arguments x and y performs some computation on them and returns a tuple containing the sum, difference, and product of x and y. The result variable is assigned to the returned tuple.# Return tuple using arguments def my_function(x, y): #...
可变参数允许你传入0个或任意个参数,这些可变参数在函数调用时自动组装为一个tuple。而关键字参数允许你传入0个或任意个含参数名的参数,这些关键字参数在函数内部自动组装为一个dict。 2.支持只传入必选参数;也可以传入任意数目的可选参数,如下例。 eg. ...
my_function("Emil") Try it Yourself » Arbitrary Arguments, *args If you do not know how many arguments that will be passed into your function, add a*before the parameter name in the function definition. This way the function will receive atupleof arguments, and can access the items acc...