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Lean Python.pdf Python Recipes Handbook.pdf 二、下载地址: http://file.allitebooks.com/20180817/PythonFor Dummies.pdfhttp://file.allitebooks.com/20180805/MySQLConnectorPython Revealed.pdfhttp://file.allitebooks.com/20180722/LearnRaspberry Pi Programming with Python, 2nd Edition.pdfhttp://file.allitebook...
1 Python for Dummies (2006).pdf 下载 2 Python for Software Design - How to Think Like a Computer Scientist (2009).pdf 下载 3 Python Essential Reference, Fourth Edition (2009).pdf 下载 4 Python Developer's Handbook, First Edition (2000).pdf 下载 5 Python Cookbook, 2nd Edition (2005)....
For.Dummies.Data.Science.For.Dummies 2nd- 2017.epub https://github.com/BigDataGal/Data-Science-for-Dummies 亚马逊:4星 61评 Designing Data-Intensive Applications - 2017.pdf Deep Time Series Forecasting with Python - 2016.pdf Data Wrangling with Python - 2016.pdf Data_Visualization_with_Python_an...
gen = movies.genres[0] print(gen.split('|')) dummies.columns.get_indexer(gen.split('|')) 1. 2. 3. ['Animation', "Children's", 'Comedy'] array([0, 1, 2], dtype=int32) 1. 2. 3. 4. 5. 6. 7. for i, gen in enumerate(movies.genres): indices = dummies.columns.get_ind...
for data in [data_train, data_test_a]: data['grade'] = data['grade'].map({'A':1,'B':2,'C':3,'D':4,'E':5,'F':6,'G':7}) # 类型数在2之上,又不是高维稀疏的,且纯分类特征 for data in [data_train, data_test_a]: data = pd.get_dummies(data, columns=['subGrade',...
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pd.get_dummies(student_df['class']) 在同一个代码单元格中,将这个表达式包含在pd.concat()函数中,将这个新创建的DataFrame对象与我们的旧对象连接起来,同时删除class列(因为我们现在有了这个属性信息的替代): student_df = pd.concat([student_df.drop('class', axis=1), \ pd.get_dummies(student_df[...
然后,您可以看到 get_dummies 函数如何自动创建虚拟变量的输出;例如,它创建了一个性别为女性的和一个性别为男性的。完成后,我们查看总共有多少个特性被热编码,发现共有 17 个。最后,打印编码后,我们看一下数据集中的所有列。下一步和第四步也是最后一步是洗牌和分割数据。在清单 3-24 中,我们可以看到生成第一...
Python数据清洗和预处理.pdf,04 数据清洗与预处理 Python数据处理,分析,可视化与数据化运营 本章学习目地 掌握常见地数据审核方法以及用途 掌握缺失值出现地常见应对错误 了解如何判断与处理缺失值 掌握去除重复值地方法 掌握随机抽样与分层抽样方法 了解常见地数据格式转换