Consider the below program -# list with EVEN and ODD number list1 = [11, 22, 33, 44, 55] # print original list print("Original list:") print(list1) # removing EVEN numbers using filter() # and lambda expression newlist = list(filter(lambda x: (x % 2 != 0), list1)) # ...
其中,lambda是Python预留的关键字,arg和expression由用户自定义。 代码示例 deffunc(a,b,c):returna + b + cprint(func(1,2,3))# 结果为6# lambda函数f =lambdaa,b,c:a + b + cprint(f(1,2,3))# 结果为6# 在代码: f = lambda a,b,c:a + b + c中,lambda表示匿名函数,# 冒号":"之...
Adding a new data type to Lispy has three parts: the internal representation of the data, the procedures that operate on it, and the syntax for reading and writing it. Here we add four types (using Python's native representation for all but input ports): strings: string literals are enclo...
Real Scheme also has the syntax (lambda (arg1 arg2 . rest) ...). We can't do that because we're using Python lists, and don't have dotted pairs. (7) Earlier error detection and extended syntax Consider the following erroneous code: (define f (lambda (x) (set! 3 x)))(...