donnemartin/data-science-ipython-notebooks

pandas - Working with Strings

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#60 创建于 2018年10月20日

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 (3 评论) (0 反应) (0 负责人)Python (26,379 star) (7,706 fork)batch import
bughelp wanted

描述

In the code cell 3: data = ['peter', 'Paul', None, 'MARY', 'gUIDO'] data.map(lambda s: s.capitalize()) was changed to [s.capitalize() for s in data if s!= None ] and now the code woks fine.

贡献者指南

技术栈
pythonpandas
领域
data
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
2
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
under 1 hour
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
Python basicspandas usage
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
80
研究方向
The issue involves a specific code cell in a Jupyter notebook within the repository. The user reports that using `data.map(lambda s: s.capitalize())` on a list containing None causes an error, and suggests replacing it with a list comprehension that filters out None values. A contributor should locate the relevant notebook file (likely under the 'python/' or similar directory) and apply the fix. The change is straightforward and can be verified by running the cell. No new dependencies or complex changes are needed.