在R中提取分号分隔字符串内的巴西机构信息

需求：从一段包含多个研究者机构的字符串中，仅保留位于巴西（Brazil）的机构信息。

示例输入 #

"Department of Neurology, Faculty of Medicine, University of São Paulo, São Paulo, Brazil; Gerontology, School of Arts, Sciences, and Humanities, University of São Paulo, São Paulo, Brazil; Graduate Program in Applied Statistics, University Center of United Metropolitan Colleges, São Paulo, Brazil; School of Health Sciences, Faculty of Medicine and Health Sciences, University of East Anglia, Norwich, United Kingdom; Human Cognitive Neuroscience, Psychology, University of Edinburgh, Edinburgh, United Kingdom; Neurology Division, University Hospital, Federal University of Minas Gerais, Belo Horizonte, Brazil; Neuroimaging Laboratory, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil; Neurology Department, University of Campinas, Campinas, Brazil"

期望输出 #

"Department of Neurology, Faculty of Medicine, University of São Paulo, São Paulo, Brazil; Gerontology, School of Arts, Sciences, and Humanities, University of São Paulo, São Paulo, Brazil; Graduate Program in Applied Statistics, University Center of United Metropolitan Colleges, São Paulo, Brazil; Neurology Division, University Hospital, Federal University of Minas Gerais, Belo Horizonte, Brazil; Neuroimaging Laboratory, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil; Neurology Department, University of Campinas, Campinas, Brazil"

实现方法（以Python为例） #

通过字符串分割、筛选、拼接三步即可完成：

• 先移除原始字符串首尾的引号，再按; 分割成单个机构条目
• 筛选出结尾包含, Brazil的条目（避免误匹配名称中带有Brazil字样的非巴西机构）
• 将筛选后的条目用; 重新拼接，最后添加首尾引号还原格式

代码示例：

# 原始机构字符串
original_str = "\"Department of Neurology, Faculty of Medicine, University of São Paulo, São Paulo, Brazil; Gerontology, School of Arts, Sciences, and Humanities, University of São Paulo, São Paulo, Brazil; Graduate Program in Applied Statistics, University Center of United Metropolitan Colleges, São Paulo, Brazil; School of Health Sciences, Faculty of Medicine and Health Sciences, University of East Anglia, Norwich, United Kingdom; Human Cognitive Neuroscience, Psychology, University of Edinburgh, Edinburgh, United Kingdom; Neurology Division, University Hospital, Federal University of Minas Gerais, Belo Horizonte, Brazil; Neuroimaging Laboratory, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil; Neurology Department, University of Campinas, Campinas, Brazil\""

# 处理并筛选
institutions = original_str.strip('"').split('; ')
brazil_institutions = [inst for inst in institutions if inst.endswith(', Brazil')]
result = '"' + '; '.join(brazil_institutions) + '"'

# 输出结果
print(result)

运行上述代码即可得到符合要求的结果。

内容的提问来源于stack exchange，提问作者always.learning