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告别枯燥，致力于打造 Python 实用小例子，更多Python良心教程见 https://ai-jupyter.com
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<div align="center"> <img src="https://img.shields.io/badge/-Python-brightgreen"> <img src="https://img.shields.io/badge/-%E6%95%B0%E6%8D%AE%E5%88%86%E6%9E%90-yellowgreen"> <img src="https://img.shields.io/badge/-%E7%AE%97%E6%B3%95-yellow"> <img src="https://img.shields.io/badge/-%E6%9C%BA%E5%99%A8%E5%AD%A6%E4%B9%A0-lightgrey"> <a href="https://static01.imgkr.com/temp/c6e10a16c4764dcdb32587760f6769ec.png" width="28%"><img src="https://img.shields.io/badge/%E5%85%AC%E4%BC%97%E5%8F%B7-Python%E5%B0%8F%E4%BE%8B%E5%AD%90-orange"></a> </div> <br> <!-- <div align="center"> <img src="https://static01.imgkr.com/temp/f379139a2c5d463799c35c1aa68911d7.png" width="18%"/> </div> --> </div> ## 介绍 告别枯燥，告别枯燥，致力于打造 Python 经典小例子、小案例。 ## License 允许按照要求转载，但禁止用于任何商用目的。如果转载本库小例子、小案例，请备注下方链接： [Python小例子所有汇总](https://ai-jupyter.com/python-small-examples/) ### 更多教程 [AI消息](https://ai-jupyter.com/) [AI新闻报道](https://ai-jupyter.com/ai-news-all/) [AI大模型](https://ai-jupyter.com/ai-llm/) [AI工具集](https://ai-jupyter.com/ai-chatgpt/) [ChatGPT4o免费使用六种方法](https://ai-jupyter.com/ai-chatgpt/) [Python教程](https://ai-jupyter.com/python-packages/) [数据分析教程](https://ai-jupyter.com/numpy-intro/) [算法教程](https://ai-jupyter.com/algorithm-basic/) [AI教程](https://ai-jupyter.com/statistics/) [Git教程](https://ai-jupyter.com/git/) [程序员](https://ai-jupyter.com/others/) [资料下载](https://ai-jupyter.com/python-20/) ## Python 小例子 ### 基本操作 | 小例子 | 链接 | 标签 | 版本 | 难度 | | ---- | ---------------------------------- | ---- | ---- | ---- | |1 | [常见算术运算](md/198.md)| 运算 | v1| ⭐⭐ | | 2 | [实现 relu](md/1.md) | max | V4.0 | ⭐️⭐️ | | 3 | [进制转化](md/2.md) | bin,oct,hex | V4.0 | ⭐️⭐️| | 4 | [整数和ASCII互转](md/3.md) | chr,ord | V1.0 | ⭐️⭐️ | | 5 | [元素都为真检查](md/4.md) | all | V2.0 | ⭐️⭐️⭐️ | | 6 | [至少一个为真检查](md/5.md) | any | V2.0 | ⭐️⭐️⭐️ | | 7 | [判断是真是假](md/6.md) | bool | V2.0 | ⭐️⭐️⭐️ | | 8 | [创建复数](md/7.md) | complex | V1.0 | ⭐️⭐️⭐️ | | 9 | [取商和余数](md/8.md) | divmod | V1.0 | ⭐️⭐️ | | 10 | [转为浮点类型](md/9.md) | float | V1.0 | ⭐️⭐️ | | 11 | [转为整型](md/10.md) | int | V1.0 | ⭐️ | | 12 | [次幂](md/11.md) | pow | V1.0 | ⭐️ | | 13 | [四舍五入](md/12.md) | round | V1.0 | ⭐️ | | 14 | [链式比较](md/13.md) | compare | V1.0 | ⭐️⭐️ | | 15 | [字符串转字节](md/14.md) | bytes,utf-8 | V1.0 | ⭐️⭐️ | | 16 | [任意对象转为字符串](md/15.md) | str | V1.0 | ⭐️⭐️ | | 17 | [执行字符串表示的代码](md/16.md) | compile | V1.0 | ⭐️⭐️⭐️ | | 18 | [计算表达式](md/17.md) | eval | V1.0 | ⭐️⭐️⭐️⭐️ | | 19 | [字符串格式化](md/18.md) | format | V1.0 | ⭐️⭐️⭐️⭐️ | | 20 | [交换两元素](md/23.md) | pack,unpack | V1.0 | ⭐️⭐️ | | 21 | [转为字典](md/29.md) | dict | V1.0 | ⭐️⭐️ | | 22 | [冻结集合](md/30.md) | frozenset | V1.0 | ⭐️⭐️ | | 23 | [转为集合类型](md/31.md) | set | V1.0 | ⭐️⭐️ | | 24 | [转元组](md/32.md) | tuple | V1.0 | ⭐️⭐️ | | 25 | [查看变量所占字节数](md/48.md) | getsizeof | V1.0 | ⭐️⭐️⭐️ | | 26 | [含单个元素的元组](md/154.md) | tuple | V1.0 | ⭐️⭐ | | 27 | [列表删除之坑](md/159.md) | list | V1.0 | ⭐️⭐ | | 28 | [列表快速复制之坑](md/160.md) | list | V1.0 | ⭐️⭐⭐ | | 29 | [发现列表前3个最大或最小数](md/195.md) | list heapq | v1.0 | ⭐️⭐⭐⭐ | | 30 | [字符串驻留](md/161.md) | str | V1.0 | ⭐️⭐⭐⭐⭐ | | 31 | [创建空集合错误](md/166.md) | set | V1.0 | ⭐️⭐ | | 32 | [充分认识for](md/164.md) | for | V1.0 | ⭐️⭐⭐ | | 33 | [认识执行时机](md/165.md) | generator | V1.0 | ⭐️⭐⭐⭐⭐ | ### 函数和模块常见用法 | 小例子 | 链接 | 标签 | 版本 | 难度 | | ---- | ---------------------------------- | ---- | ---- | ---- | | 1 | [操作函数对象](md/24.md) | operator | V2.0 | ⭐️⭐️⭐️⭐️ | | 2 | [创建range序列](md/55.md) | range | V1.0 | ⭐️⭐️ | | 3 | [生成逆序序列](md/25.md) | range | V1.0 | ⭐️⭐️ | | 4 | [拿来就用的排序函数](md/19.md) | sorted | V1.0 | ⭐️⭐️⭐️ | | 5 | [求和函数](md/20.md) | sum | V1.0 | ⭐️⭐️ | | 6 | [函数的五类参数使用例子](md/26.md) | variable parameter | V2.0 | ⭐️⭐️⭐️⭐️ | | 7 | [使用slice对象](md/27.md) | slice | V2.0 | ⭐️⭐️⭐️⭐️⭐️ | | 8 | [lambda 函数](md/28.md) | lambda | V3.0 | ⭐️⭐️⭐️⭐️ | | 9 | [枚举对象](md/47.md) | enumerate | V1.0 | ⭐️⭐️⭐️ | | 10 | [过滤器filter](md/49.md) | filter | V1.5 | ⭐️⭐️⭐️ | | 11 | [返回对象哈希值](md/50.md) | hash | V1.0 | ⭐️⭐️ | | 12 | [带名字的元组](md/79.md) | namedtuple | V1.0 | ⭐️⭐️⭐️ | | 13 | [一行代码实现列表反转](md/70.md) | reverse | V1.0 | ⭐️⭐️ | | 14 | [反转字符串的两个方法](md/86.md) | reversed | V1.0 | ⭐️⭐️ | | 15 | [join 串联字符串](md/87.md) | join | V1.0 | ⭐️⭐️ | | 16 | [字符串字节长度](md/88.md) | encode | V1.0 | ⭐️⭐️ | | 17 | [groupby单字段分组](md/129.md) | itertools, groupby,lambda | V1.0 | ⭐️⭐️⭐️ | | 18 | [groupby多字段分组](md/130.md) | itemgetter,itertools,groupby | V1.0 | ⭐️⭐️⭐️⭐️ | | 19 | [itemgetter和key函数](md/131.md) | operator,itemgetter,itertools | V1.0 | ⭐️⭐️⭐️⭐️⭐️ | | 20 | [sum函数计算和聚合同时做](md/132.md) | sum,generator | V1.0 | ⭐️⭐️⭐️⭐️⭐️ | | 21 | [默认参数设为空](md/155.md) | function | V1.0 | ⭐️⭐⭐ | | 22 | [各种参数使用之坑](md/158.md) | function paremeter | V1.0 | ⭐️⭐⭐ | | 23 | [lambda自由参数之坑](md/157.md) | lambda | V1.0 | ⭐️⭐⭐ | | 24 | [使用堆升序列表](md/196.md) | sort heapq | v1.0 | ⭐️⭐⭐⭐ | ### 面向对象 | 小例子 | 链接 | 标签 | 版本 | 难度 | | ---- | ---------------------------------- | ---- | ---- | ---- | | 1 | [所有对象之根](md/43.md) | object | V1.0 | ⭐️ | | 2 | [对象是否可调用](md/33.md) | callable | V2.5 | ⭐️⭐️⭐️⭐️ | | 3 | [ascii 展示对象](md/34.md) | `__repr__` | V2.5 | ⭐️⭐️⭐️ | | 4 | [类方法](md/35.md) | classmethod | V1.5 | ⭐️⭐️⭐️ | | 5 | [动态删除属性](md/36.md) | delattr,hasattr | V1.5 | ⭐️⭐️ | | 6 | [一键查看对象所有方法](md/37.md) | dir | V1.5 | ⭐️⭐️ | | 7 | [动态获取对象属性](md/38.md) | getattr | V1.5 | ⭐️⭐️ | | 8 | [对象是否有某个属性](md/39.md) | hasattr | V1.5 | ⭐️⭐️⭐️ | | 9 | [对象门牌号](md/40.md) | id | V1.0 | ⭐️ | | 10 | [实例和对象关系判断](md/41.md) | isinstance | V1.5 | ⭐️⭐️⭐️ | | 11 | [issubclass父子关系鉴定](md/42.md) | issubclass | V1.5 | ⭐️⭐️⭐️ | | 12 | [创建属性的两种方法](md/44.md) | property | V2.5 | ⭐️⭐️⭐️⭐️⭐️ | | 13 | [查看对象类型](md/45.md) | type | V1.0 | ⭐️ | | 14 | [元类使用介绍](md/46.md) | type,`__class__` | V2.0 | ⭐️⭐️⭐️⭐️⭐️ | | 15 | [相同值的不可变对象](md/162.md) | mutable | V1.0 | ⭐️⭐⭐ | | 16 | [对象销毁顺序](md/163.md) | OOP del | V1.0 | ⭐️⭐⭐⭐ | | 17 | [子类继承父类的静态方法吗？](md/171.md) | staticmethod | V1.0 | ⭐️⭐⭐ | ### 正则 | 小例子 | 链接 | 标签 | 版本 | 难度 | | ---- | ---------------------------------- | ---- | ---- | ---- | | 1 | [正则中字符 `r`作用](md/89.md) | re,r | V3.0 | ⭐️⭐️⭐️ | | 2 | [正则原子操作](md/90.md) | re | V3.0 | ⭐️⭐️⭐️ | | 3 | [正则中的转义](md/91.md) | re,\ | V3.0 | ⭐️⭐️⭐️ | | 4 | [正则最普通查找](md/92.md) | re,findall | V3.0 | ⭐️⭐️⭐️ | | 5 | [使用通用字符查找](md/93.md) | re,\s,\w,\d | V3.0 | ⭐️⭐️⭐️ | | 6 | [使用元字符查找](md/94.md) | re,+,* | V3.0 | ⭐️⭐️⭐️ | | 7 | [捕获子串](md/95.md) | () | V3.0 | ⭐️⭐️⭐️⭐️ | | 8 | [贪心捕获和非贪心捕获](md/96.md) | re | V1.0 | ⭐️⭐️⭐️⭐️ | | 9 | [使用正则做密码安全检查](md/97.md) | re | V1.0 | ⭐️⭐️⭐️⭐️⭐️ | | 10 | [爬取百度首页标题](md/98.md) | re | V1.0 | ⭐️⭐️⭐️⭐️ | | 11 | [批量转化为驼峰格式(Camel)](md/99.md) | re | V1.0 | ⭐️⭐️⭐️⭐️⭐️ | | 12 | [使用正则判断是否为正浮点数](md/102.md) | str,re,float | V1.0 | ⭐️⭐️⭐️⭐️⭐️ | | 13 | [使用正则提取正整数和大于0的浮点数](md/197.md) | re findall | v2 | ⭐️⭐⭐⭐ | ### 装饰器迭代器生成器 | 小例子 | 链接 | 标签 | 版本 | 难度 | | ---- | ---------------------------------- | ---- | ---- | ---- | | 1 | [通俗理解装饰器](md/138.md) | decorator | V1.0 | ⭐️⭐️⭐️ | | 2 | [测试函数运行时间的装饰器](md/136.md) | decorator | V1.0 | ⭐️⭐️⭐️⭐️ | | 3 | [统计异常次数装饰器](md/137.md) | decorator,nonlocal | V1.5 | ⭐️⭐️⭐️⭐️ | | 4 | [定制递减迭代器](md/139.md) | Iterator | V3.0 | ⭐️⭐️⭐️⭐️ | | 5 | [创建迭代器](md/53.md) | iter,`__iter__` | V1.5 | ⭐️⭐️⭐️ | | 6 | [反向迭代器reversed](md/56.md) | reversed | V1.0 | ⭐️⭐️ | | 7 | [zip迭代器](md/57.md) | zip | V1.5 | ⭐️⭐️⭐️ | | 8 | [list分组(生成器版)](md/134.md) | yield,generator | V1.0 | ⭐️⭐️⭐️ | | 9 | [列表全展开(生成器版)](md/135.md) | list,yield,generator | V1.0 | ⭐️⭐️⭐️ | | 10 | [chain串联小容器为大容器](md/84.md) | itertools,chain | V1.0 | ⭐️⭐️⭐️⭐️⭐️ | | 11 | [product 使用案例](md/85.md) | product | V1.0 | ⭐️⭐️⭐️⭐️⭐️ | | 12 | [斐波那契数列前n项](md/126.md) | yield,range | V1.0 | ⭐️⭐️⭐️ | ### 绘图 | 小例子 | 链接 | 标签 | 版本 | 难度 | | ---- | ---------------------------------- | ---- | ---- | ---- | | 1 | [turtle绘制奥运五环图](md/140.md) | turtle | V1.0 | ⭐️⭐️⭐️ | | 2 | [turtle绘制漫天雪花](md/141.md) | turtle | V1.0 | ⭐️⭐️⭐️ | | 3 | [Python词云图](md/142.md) | WordCloud | V1.0 | ⭐️⭐️⭐ | | 4 | [Plotly柱状图和折线图](md/143.md) | plotly | V1.0 | ⭐️⭐ | | 5 | [seaborn热力图](md/144.md) | seaborn | V1.0 | ⭐️⭐ | | 6 | [Pyecharts仪表盘](md/145.md) | pyecharts | V1.0 | ⭐️⭐ | | 7 | [Pyecharts漏斗图](md/146.md) | pyecharts | V1.0 | ⭐️⭐ | | 8 | [Pyecharts水球图](md/147.md) | pyecharts | V1.0 | ⭐️⭐ | | 9 | [Pyecharts饼图](md/148.md) | pyecharts | V1.0 | ⭐️⭐ | | 10 | [Pyecharts极坐标图](md/149.md) | pyecharts | V1.0 | ⭐️⭐ | | 11 | [Pyecharts词云图](md/150.md) | pyecharts | V1.0 | ⭐️⭐ | | 12 | [Pyecharts热力图](md/151.md) | pyecharts | V1.0 | ⭐️⭐ | | 13 | [matplotlib绘制动图](md/152.md) | matplotlib | V1.0 | ⭐️⭐ | | 14 | [seaborn pairplot图](md/153.md) | seaborn | V1.0 | ⭐️⭐⭐⭐ | | 15 | [pyecharts传入Numpy数据绘图失败](md/167.md) | numpy pyecharts | V1.0 | ⭐️⭐⭐ | | 16 | [图像处理包pillow](md/169.md) | pillow | V1.0 | ⭐️⭐⭐ | ### 数据分析 | 小例子 | 链接 | 标签 | 版本 | 难度 | | ---- | ---------------------------------- | ---- | ---- | ---- | | 1 | [数据分析神器：deepnote](./md/177.md) | deepnote | v1.0 | ⭐️⭐⭐ | | 2 | [NumPy 的pad填充方法](md/172.md) | NumPy pad | V1.0 | ⭐️⭐⭐⭐ | | 3 | [创建下对角线为1、2、3、4的对角矩阵](md/173.md) | NumPy diag | V1.0 | ⭐️⭐⭐ | | 4 | [cut 数据分箱](md/174.md) | Pandas cut | v1.0 | ⭐️⭐⭐ | | 5 | [丢弃空值和填充空值](./md/175.md) | Pandas dropna fillna | v1.0 | ⭐️⭐⭐ | | 6 | [apply 方法去掉特殊字符](./md/178.md) | pandas apply | v1.0 | ⭐️⭐⭐ | | 7 | [使用map对列做特征工程](./md/179.md) | pandas map | v1.0 | ⭐️⭐⭐ | | 8 | [category列转数值](./md/180.md) | pandas category | v1.0 | ⭐️⭐⭐ | | 9 | [rank排名](./md/181.md) | pandas rank | v1.0 | ⭐️⭐⭐| | 10 | [完成数据下采样，调整步长由小时为天](./md/182.md) | pandas resample | v1.0 | ⭐️⭐⭐ | | 11 | [如何用 Pandas 快速生成时间序列数据](./md/183.md) | pandas util | v1.0 | ⭐️⭐⭐ | | 12 | [如何快速找出 DataFrame 所有列 null 值个数](./md/184.md) | pandas isnull sum | v1.0 | ⭐️⭐⭐ | | 13 | [重新排序 DataFrame 的列](./md/185.md) | pandas dataframe | v1.0 | ⭐️⭐⭐ | | 14 | [使用 count 统计词条 出现次数](./md/186.md) | pandas count | v1.0 | ⭐️⭐⭐ | | 15 | [split 求时分(HH:mm)的分钟差](./md/187.md) | pandas split | v1.0 | ⭐️⭐⭐ | | 16 | [melt透视数据小技巧](./md/188.md) | pandas melt | v1.0 | ⭐️⭐⭐ | | 17 | [pivot 透视小技巧](./md/189.md) | pandas melt | v1.0 | ⭐️⭐⭐ | | 18 | [p随机读取文件的K行，生成N个](./md/190.md) | pandas sample | v1.0 | ⭐️⭐⭐ | | 19 | [格式化Pandas的时间列](md/191.md) | pandas apply | v1.0 | ⭐️⭐⭐⭐ | ### 其他常用 | 小例子 | 链接 | 标签 | 版本 | 难度 | | ---- | ---------------------------------- | ---- | ---- | ---- | | 1 | [help 一键帮助](md/51.md) | help | V1.0 | ⭐️ | | 2 | [获取用户输入](md/52.md) | input | V1.0 | ⭐️ | | 3 | [文件读写和mode 取值表](md/54.md) | open,read,write,with,mode | V2.0 | ⭐️⭐️⭐️ | | 4 | [operator使用举例](md/58.md) | operator | V1.0 | ⭐️⭐️⭐️⭐️ | | 5 | [传输json对象](md/59.md) | json | V2.0 | ⭐️⭐️⭐️⭐️⭐️ | | 6 | [获取文件后缀名](md/103.md) | os,splitext | V1.0 | ⭐️⭐️ | | 7 | [获取路径中的文件名](md/104.md) | os,split | V1.0 | ⭐️⭐️ | | 8 | [批量修改文件后缀](md/105.md) | argparse,listdir | V1.0 | ⭐️⭐️⭐️⭐️ | | 9 | [xls批量转换成xlsx](md/106.md) | os,listdir,splitext | V1.0 | ⭐️⭐️⭐️⭐️ | | 10 | [获取指定后缀名的文件](md/107.md) | os,listdir,splitext | V1.0 | ⭐️⭐️⭐️⭐️ | | 11 | [批量压缩文件](md/108.md) | zipfile | V1.0 | ⭐️⭐️⭐️⭐️ | | 12 | [32位加密](md/109.md) | hashlib | V1.0 | ⭐️⭐️⭐️⭐️ | | 13 | [年的日历图](md/110.md) | calendar | V1.0 | ⭐️⭐️ | | 14 | [判断是否为闰年](md/111.md) | calendar | V1.0 | ⭐️⭐️⭐️ | | 15 | [判断月有几天](md/112.md) | calendar,datetime | V1.0 | ⭐️⭐️⭐️ | | 16 | [月的第一天](md/113.md) | datetime | V1.0 | ⭐️⭐️ | | 17 | [月的最后一天](md/114.md) | calendar,datetime | V1.0 | ⭐️⭐️ | | 18 | [获取当前时间](md/115.md) | time,datetime | V1.0 | ⭐️⭐️ | | 19 | [字符时间转时间](md/116.md) | time,datetime | V1.0 | ⭐️⭐️ | | 20 | [时间转字符时间](md/117.md) | time,datetime | V1.0 | ⭐️⭐️ | | 21 | [获得某天后的1~n天](md/133.md) | Calendar,monthrange | V4.0 | ⭐️⭐️⭐️ | | 22 | [默认启动主线程](md/118.md) | threading | V1.0 | ⭐️⭐️ | | 23 | [创建线程](md/119.md) | threading | V1.0 | ⭐️⭐️ | | 24 | [交替获得CPU时间片](md/120.md) | threading | V1.0 | ⭐️⭐️⭐️ | | 25 | [多线程抢夺同一个变量](md/121.md) | threading | V1.0 | ⭐️⭐️⭐️ | | 26 | [多线程变量竞争引起的问题](md/122.md) | threading | V1.0 | ⭐️⭐️⭐️ | | 27 | [多线程锁](md/123.md) | threading,lock | V1.0 | ⭐️⭐️⭐️ | | 28 | [时间转数组及常用格式](md/124.md) | time,datetime,format | V1.0 | ⭐️⭐️⭐️ | | 29 | [nonlocal用于内嵌函数中](md/21.md) | nonlocal | V2.0 | ⭐️⭐️⭐️⭐️⭐️ | | 30 | [global 声明全局变量](md/22.md) | global | V2.0 | ⭐️⭐️⭐️⭐️⭐️ | | 31 | [共享变量未绑定之坑](md/156.md) | global | V1.0 | ⭐️⭐⭐ | | 32 | [优化代码异常输出包](md/168.md) | debugger | V1.0 | ⭐️⭐⭐ | | 33 | [一行代码找到编码](md/170.md) | chardet | V1.0 | ⭐️⭐⭐ | | 34 | [创建SQLite连接](md/192.md) | SQLite | v1.0 | ⭐️⭐⭐⭐ | | 35 | [json对象转python对象](md/193.md) | python json | v1.0 | ⭐️⭐⭐⭐ | | 36 | [python对象转json对象](md/194.md) | python json | v1.0 | ⭐️⭐⭐⭐ | | 37 | [一行代码让 pip 安装加速 100 倍](md/176.md) | pip install | v1.0 | ⭐️⭐⭐ | ### 工作常用案例 | 小例子 | 链接 | 标签 | 版本 | 难度 | | ---- | ---------------------------------- | ---- | ---- | ---- | | 1 | [不用else和if实现计算器](md/60.md) | operator | V1.0 | ⭐️⭐️⭐️ | | 2 | [去最求平均](md/61.md) | list,sort,round | V1.0 | ⭐️⭐️⭐️⭐️ | | 3 | [打印99乘法表](md/62.md) | for,range,format | V1.0 | ⭐️⭐️⭐️ | | 4 | [递归版flatten函数](md/63.md) | recursion,list,isinstance | V1.0 | ⭐️⭐️⭐️⭐️ | | 5 | [列表等分为n份](md/64.md) | list,ceil | V1.0 | ⭐️⭐️⭐️ | | 6 | [压缩列表](md/65.md) | list,filter | V1.0 | ⭐️⭐️⭐️⭐️ | | 7 | [求更长的列表](md/66.md) | max,lambda | V1.0 | ⭐️⭐️⭐️⭐️⭐️ | | 8 | [求列表众数](md/67.md) | max,lambda,count | V1.0 | ⭐️⭐️⭐️⭐️ | | 9 | [所有多个列表的最大值](md/68.md) | max,lambda | V1.0 | ⭐️⭐️⭐️⭐️ | | 10 | [列表检查重复](md/69.md) | set | V1.0 | ⭐️⭐️⭐️ | | 11 | [浮点数等差数列](md/71.md) | range,float | V1.0 | ⭐️⭐️⭐️⭐️ | | 12 | [按条件分组](md/72.md) | lambda | V1.0 | ⭐️⭐️⭐️⭐️ | | 13 | [map实现向量运算](md/73.md) | map,lambda | V1.0 | ⭐️⭐️⭐️ | | 14 | [值最大的字典](md/74.md) | max,lambda | V1.0 | ⭐️⭐️⭐️⭐️ | | 15 | [合并两个字典](md/75.md) | ** | V1.0 | ⭐️⭐️⭐️ | | 16 | [Topn 字典](md/76.md) | heapq,nlargest | V1.0 | ⭐️⭐️⭐️ | | 17 | [判断是否为异位词](md/77.md) | collections,Counter | V1.0 | ⭐️⭐️⭐️ | | 18 | [逻辑上合并字典](md/78.md) | ChainMap | V1.0 | ⭐️⭐️⭐️⭐️⭐️ | | 19 | [sample 样本抽样](md/80.md) | random,sample | V1.0 | ⭐️⭐️⭐️ | | 20 | [重洗数据集](md/81.md) | shuffle | V1.0 | ⭐️⭐️⭐️ | | 21 | [10个均匀分布的坐标点](md/82.md) | random,uniform | V1.0 | ⭐️⭐️⭐️ | | 22 | [10个高斯分布的坐标点](md/83.md) | random,gauss | V1.0 | ⭐️⭐️⭐️⭐️ | | 23 | [是否互为排序词](md/100.md) | collections,defaultdict | V1.0 | ⭐️⭐️⭐️⭐️ | | 24 | [str1是否由str2旋转而来](md/101.md) | str | V1.0 | ⭐️⭐️⭐️ | | 25 | [寻找第n次出现位置](md/125.md) | enumerator | V1.0 | ⭐️⭐️⭐️ | | 26 | [找出所有重复元素](md/127.md) | calendar,datetime | V1.0 | ⭐️⭐️⭐️⭐️ | | 27 | [联合统计次数](md/128.md) | Counter | V1.0 | ⭐️⭐️⭐️⭐️⭐️ | | 28 | [求两点球面距离](md/199.md) | math asin | V1.0 | ⭐️⭐️⭐️⭐️⭐️ | | 29 | [获取文件编码](md/200.md) | chardet | V1.0 | ⭐️⭐️⭐️⭐️⭐️ | | 30 | [格式化json串](md/201.md) | json | V1.0 | ⭐️⭐️⭐️⭐️⭐️ |