从函数中,返回多个参数 Returning Multiple Values in Python - GeeksforGeeks 在Python 中,我们使用 return Tuple 的方式,从函数中返回多个参数,并直接赋值给变量。 # A Python program to return multiple # values from a method using tuple # This function returns a tuple def fun(): str = "geeksforge...
Returning Multiple Named-Objects When you’re writing a function that returns multiple values in a single return statement, you can consider using a collections.namedtuple object to make your functions more readable. namedtuple is a collection class that returns a subclass of tuple that has fields ...
Python中的参数可以返回多个值: # Returning multiple values (with tuple assignments) def swap(x, y): return y, x # Return multiple values as a tuple without the parenthesis. # (Note: parenthesis have been excluded but can be included) x = 1 y = 2 x, y = swap(x, y) # => x = ...
[Python Tutorial: Returning Multiple Values from Functions](
Returning Multiple ValuesOne of the most common applications of passing by reference is to create a function that alters the value of the reference parameters while returning a distinct value. You can modify your pass-by-reference C# example to illustrate this technique:C# using System; class ...
本章经过大幅编辑,比第一版《流畅的 Python》中对应的第十一章长约 24%。虽然有些部分和许多段落是相同的,但也有很多新内容。以下是亮点: 本章的介绍和类型映射(图 13-1)是新内容。这是本章和所有涉及 Python ≥ 3.8 中类型的其他章节中大部分新内容的关键。
Returning Multiple Values Functions Are Objects Anonymous (Lambda) Functions Currying: Partial Argument Application Generators Errors and Exception Handling 3.3 Files and the Operating System Bytes and Unicode with Files 3.4 Conclusion 4. NumPy Basics: Arrays and Vectorized Computation ...
Common Mistake #10: Misusing the__del__method Let’s say you had this in a file calledmod.py: import fooclassBar(object): ...def__del__(self): foo.cleanup(self.myhandle) And you then tried to do this fromanother_mod.py:
If multiple values given, the `other` DataFrame must have a MultiIndex. Can pass an array as the join key if it is not already contained in the calling DataFrame. Like an Excel VLOOKUP operation. how : {'left', 'right', 'outer', 'inner'}, default 'left' How to handle the ...
在Python 3 中,从映射方法 .items()、.keys() 和.values() 返回的对象分别实现了 ItemsView、KeysView 和ValuesView 中定义的接口。前两者还实现了 Set 的丰富接口,其中包含我们在 “集合操作” 中看到的所有运算符。Iterator请注意,迭代器子类 Iterable。我们在 第十七章 中进一步讨论这一点。