fromfunctoolsimport*>>>sq=map(lambdax:x**2,range(0,10))>>>reduce(lambdax,y:x+y,sq)285 >>>f=filter(lambdax:x%2==0,[iforiinrange(10)])>>>f<filterat0x50c56d8>>>print([iforiinf])[0,2,4,6,8] 在Python的3.x版本中,map、reduce、filter函数会构造出一个Iterator,而不是list。
Since there is nomain()function in Python, when a Python program is run, the code present at level 0 indentation is executed. However, before doing that, a few special variables are defined.__name__is one such special variable. If the source file is executed as the main program, the i...
A function is a named section of code that performs a specific task. Here, our expert introduces you to how they work in Python. Written by Sadrach Pierre Published on Feb. 23, 2023Image: Shutterstock / Built InIn computer programming, a function is a named section of a code that ...
Python functions can specify their arguments with a keyword. This means that when calling a function, we specify both a keyword and a value. When we have multiple arguments and they are used without keywords, the order in which we pass those arguments is crucial. If we expect a name, age...
You can read more about using object-oriented programming and defining classes inObject-Oriented Programming (OOP) in Python. Remove ads Conclusion You’ve explored how to uselen()to determine the number of items in sequences, collections, and other data types that hold several items at a time...
Python supports object-oriented programming and has a concise, readable, and easy-to-learn syntax. It is no wonder that it is one of the most popular programming languages. An integral part of Python are its built-in functions. You would have surely used some of these functions in your pro...
Let's write this in Python.import functools def compose(*functions): def compose2(f, g): return lambda x: f(g(x)) return functools.reduce(compose2, functions, lambda x: x) Or in a more compact way:def compose(*functions): return functools.reduce(lambda f, g: lambda x: f(g(x)...
In this tutorial, we take you through how to use the print() function in the Python programming language. You will see and use the print function a lot in Python scripts, so it is important that you learn the basics of how you can utilize it. In this tutorial, we will touch on the...
Python supports object-oriented programming and has a concise, readable, and easy-to-learn syntax. It is no wonder that it is one of the most popular programming languages. An integral part of Python are its built-in functions. We've written a series of articles to help you learn and bru...
Python is a high-level programming language that has become incredibly popular over the years because of how easy and adaptable it is to use. It is an easy-to-learn object-oriented language that allows dynamic typing. Numerous functions and methods that are already included in Python make devel...