| Name | rstyleslice JSON |
| Version |
1.4.5
JSON |
| download |
| home_page | None |
| Summary | 一套符合直觉的索引和切片语法 |
| upload_time | 2023-07-14 17:43:09 |
| maintainer | None |
| docs_url | None |
| author | None |
| requires_python | >=3.7 |
| license | None |
| keywords |
rstyleslice
slice
|
| VCS |
|
| bugtrack_url |
|
| requirements |
No requirements were recorded.
|
| Travis-CI |
No Travis.
|
| coveralls test coverage |
No coveralls.
|
# 项目描述
一套符合直觉的索引和切片语法。
| | **Python** | **rstyleslice** |
| -------------------------------------- | -------------------------------------------------------------------------- | -------------------------------------------------------------------------- |
| **索引** | 从 0 开始（0 表示第 1 个元素）<br /><br />-1 表示倒数第 1 个元素（相同点） | 从 1 开始（1 表示第 1 个元素）<br /><br />-1 表示倒数第 1 个元素（相同点） |
| **切片** | 左闭右开区间，例如：<br />[3: 5] 表示提取第 4、5 这 2 个元素 | 双闭区间，例如：<br />[3: 5] 表示提取第 3、4、5 这 3 个元素 |
| **从右往**<br />**左切片** | step（步长）为负值，例如：<br />[9: 1: -1] 表示提取第 9~3 这 7 个元素 | step（步长）始终为正值，例如：<br />[9: 1: 1] 表示提取第 9~1 这 9 个元素 |
切片格式为 [start: stop: step] ，start 表示从哪条开始，stop 表示到哪条停止，step 表示步长。当 step>=2 时表示间隔式切片。
# 关于作者
作者：lcctoor.com
域名：lcctoor.com
邮箱：lcctoor@outlook.com
[主页](https://lcctoor.github.io/me/) \| [微信](https://lcctoor.github.io/me/author/WeChatQR-max.jpg) \| [Python交流群](https://lcctoor.github.io/me/lccpy/WechatReadersGroupQR-original.jpg) \| [捐赠](https://lcctoor.github.io/me/donation/donationQR-1rmb-max.jpg)
# Bug提交、功能提议
您可以通过 [Github-Issues](https://github.com/lcctoor/lccpy/issues)、[微信](https://lcctoor.github.io/me/author/WeChatQR-max.jpg) 与我联系。
# 安装
```
pip install rstyleslice
```
# [教程](https://lcctoor.github.io/lccpy/?doc=rstyleslice)
# 教程预览
#### 导入
```python
from rstyleslice import rslice
```
#### 创建R风格容器
```python
obj = rslice([1,2,3,4,5,6,7,8,9])
# Python中任何可以索引和切片的对象（如list、str、tuple）都可以转化成R风格容器。
```
#### 索引取值
```python
obj[1]
# >>> 1
```
#### 索引赋值
```python
obj[1] = 111
obj[:]
# >>> [111, 2, 3, 4, 5, 6, 7, 8, 9]
```
#### 切片取值
```python
obj[3:7] # >>> [3, 4, 5, 6, 7]
obj[7:3] # >>> [7, 6, 5, 4, 3]
obj[3:7:2] # >>> [3, 5, 7]
obj[8:2:3] # >>> [8, 5, 2]
```
#### 切片赋值
```python
obj[4:6] = [44, 55]
obj[:]
# >>> [111, 2, 3, 44, 55, 7, 8, 9]
obj[4:6] = []
obj[:]
# >>> [111, 2, 3, 8, 9]
obj[4:] = [1, 2, 3, 4, 5]
obj[:]
# >>> [111, 2, 3, 1, 2, 3, 4, 5]
obj[4:100] = ['1', 2, 3, 4, 5]
obj[:]
# >>> [111, 2, 3, '1', 2, 3, 4, 5]
```
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