Python learning tips: Detailed explanation of splicing list items

This article mainly introduces you to Python learning tips related to the splicing of list items. The article introduces it in detail through example code, which has certain reference learning value for everyone. It is needed Friends, let’s take a look together.

This article introduces a little trick about splicing list items in Python. It is shared for everyone’s reference and learning. Let’s take a look at the detailed introduction:

Typical code:

data_list = ['a', 'b', 'c', 'd', 'e', 'f'] 
separator = '\t' 
data_joined = separator.join(data_list) 
print(data_joined)

The output is:

a b c d e f

Application scenario

In implementation In many business needs, each item in the list needs to be spliced ​​into a string according to a certain delimiter to complete a certain serialization mode for network transmission or logging, or to form some kind of intermediate value for subsequent use. process use.

Why do you regard it as a little trick?

During the work process, when encountering similar application scenarios, using for loop to complete related requirements is almost the first thing that comes to mind, but using for loop If it does, it will take a few more lines of code, and it will take a little more time to understand the logic of the code, especially when it comes to the need to process the last list item: we don't want the string we end up with. The suffix is ​​a delimiter.

Benefits

1. The code is more compact, reducing logical loops, making the code more readable

2. Built-in methods, better than their own Concatenating strings is more efficient It is a

generator class

type and other iterable types, not just list types;2. Each item in the iterable type is required to be a string type; 3. In Java 8, the

String

class also provides a similar static method join, and more compact code can also be used to splice it in Java

Programming

String;

Summary

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