df.dropna(axis=0, how='any', thresh=None, subset=None, inplace=False):Remove missing values。 默认某行有空值时删除该行。 axis=0代表的是'index',即行方向;axis=1代表的是'columns',即列方向。 how的取值为'any'或'all',how='any'代表的是所在列/行(依据删除的维度)存在空值就删除对应列/行;...
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importpandasaspddf=pd.DataFrame(pd.read_excel('test1.xlsx',engine='openpyxl'))print(df.values)df['price'].fillna(df['price'].mean(),inplace=True)print(df.values)df.to_excel('test1.xlsx',index=False) [[1001 Timestamp('2024-01-02 00:00:00') '东莞' '100-A' 23 1200.0] [1002 ...
ValueError: cannot indexwithvector containing NA /NaNvalues How To Fix The Error "cannot index with vector containing NA" To fix the above error, we can either ignore the Na/Nan values and then run above command or remove the Na/Nan values altogether. Lets try the first idea that is igno...
方法get_level_values()将返回特定级别上每个位置的标签向量: 代码语言:javascript 复制 In [23]: index.get_level_values(0) Out[23]: Index(['bar', 'bar', 'baz', 'baz', 'foo', 'foo', 'qux', 'qux'], dtype='object', name='first') In [24]: index.get_level_values("second") Out...
您可以计算每列中NaN值的数量,如果该数量大于10(或其他值),则筛选出该列
dtype=object)# for a specific levelIn [32]: df[["foo","qux"]].columns.get_level_values(0) Out[32]: Index(['foo','foo','qux','qux'], dtype='object', name='first') 要重建仅使用的级别的MultiIndex,可以使用remove_unused_levels()方法。
subset # 指定列处理NaN值 subset='英语1' # 针对英语1这列做空值处理 subset=['英语1','英语2'] # 针对两列做空值处理 ''' # 删除语文、英语这两列中任意一列有NaN值的行 b = data.dropna(subset=['语文','英语']) print(b) # 删除性别、语文这两列中同时出现NaN值的行 b = data.dropna(sub...
2023-01-03 300 NaN 2.4 使用多个汇总函数 我们还可以同时使用多个汇总函数来计算不同的统计信息。通过传递一个函数列表给aggfunc参数: pivot_table_aggfunc = pd.pivot_table(df, values='销售额', index='产品', aggfunc=[sum, 'mean']) print(pivot_table_aggfunc) ...