计算操作
1、pandas.series.value_counts
Series.value_counts(normalize=False,sort=True,ascending=False, bins...Returns:
sum : Series or DataFrame (if level specified)
import numpy as np
import pandas as pd
df=pd.DataFrame...2、pandas.dataframe.mean
返回指定轴上值的平均数....例子:
import numpy as np
import pandas as pd
df=pd.DataFrame(data=[[1.4,np.nan],[7.1,-4.5],[np.nan,np.nan...排序
1、pandas.dataframe.sort_values
DataFrame.sort_values(by,axis=0,ascending=True,inplace=False, kind=