检查是否列不是所有南

代码示例

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来检测,如果一个数据架具有南值

df.isnull().sum().sum()
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找到所有南列的大熊猫

nan_cols = [i for i in df.columns if df[i].isnull().any()]
print("No. of columns containing null values")
print(len(df.columns[df.isna().any()]))

print("No. of columns not containing null values")
print(len(df.columns[df.notna().all()]))

print("Total no. of columns in the dataframe")
print(len(df.columns))

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