pandas取某个单元格的值_使用pandas读取csv中的特定单元格

我有一个CSV文件，如下所示：patient_id, age_in_years, CENSUS_REGION, URBAN_RURAL_STATUS

11511, 7 Northeast, Urban,

9882613, 73, South, Urban,

32190339, 49, West, Urban,

32190339, 49, West, Urban,

32190339, 49, West, Urban,

32190339, 49, West, Urban,

.....

现在我的代码是这样的：df = pd.read_csv(filename, index_col = 0)

输出如下：patient_id age_in_years CENSUS_REGION URBAN_RURAL_STATUS YEAR MONTH

11511 7 Northeast Urban 2011 6

9882613 73 South Urban 2011 7

32190339 49 West Urban 2011 8

32190339 49 West Urban 2011 8

32190339 49 West Urban 2011 8

32190339 49 West Urban 2011 8

32190339 49 West Urban 2011 8

32190339 49 West Urban 2011 8

...

我可以通过以下方式获得一个特定的列，例如人口普查地区print(df['CENSUS_REGION'])

但我想在CSV中获取特定的单元格。有人能帮我做这个吗？