如何在python的for循环中打印输出之前设置标题？

Question

我在list1 中有 4 个df：

df1df2df3df4

list1 中的每个数据帧都进入一个 for 循环并提供单个输出，但在打印输出之前，我希望给出一个标题，以便我能够识别输出属于哪个组。即它是属于高、低、中还是平均

list2 具有需要为 4 个输出提供的所有标题。 list2 = ["High","Medium","Low","Average"]

例子：

     Before df1 output is printed i wanted the heading to be 'High'

     Before df2 output is printed i wanted the heading to be 'Medium'

     Before df3 output is printed i want the heading to be printed as 'Low'

     Before df4 output is printed i want the heading to be printed as 'Average'

下面是我的代码：

import os
os.chdir(r'C:\Users\91979\Downloads\head code\src')
from classStruct.model import model
list1 = [df1,df2,df3,df4]
list2 = ["High","Medium","Low", "Average"]
for i in list1:
    needed_cols = i.columns
    target_col =  ['Rejection (%)']
    cols = list(set(needed_cols) - set(target_col))
    totData = i
    totData = totData.round(decimals=2)
    Model1 = model(totData,cols,['Rejection (%)'])
    clustSet = pd.DataFrame([C.clusterCenter for C in Model1.clustersList])
    Model1.predictor(clustSet, ["Rejection (%)"], Normalize=False)
    Model1.optimalClusterRejectionSeries = round(min(clustSet['Rejection (%)Predicted']),4)
    col_list = ['GCS (kg/cm2)', 'Inert Fines (%)', 'Volatile Matter (%)',
       'LOI (%)', 'Active Clay (%)', 'GFN/AFS (no)', 'Compactability (%)',
       'Wet Tensile Strength (gm/cm2)', 'Moisture (%)',
       'Permeability (no)', 'Temp. of Sand after mix.(C)']
    Model1.deNormalizeColumns(col_list, clustSet).to_csv("Predicted_optimal.csv")
    Model1.deNormalizeColumns(col_list, clustSet)

    
    for j in list2:
        print(j)
    print(pd.DataFrame(clustSet[clustSet['Rejection (%)Predicted'] == clustSet['Rejection (%)Predicted'].min()]))
    print('\n')
    print('\n')

我应该在代码的哪一部分打印list2 中的标题，以便获得正确的 4 次迭代和正确的标题。

Answer 1

你可以使用 zip：

list1 = [df1,df2,df3,df4]
list2 = ["High","Medium","Low", "Average"]
for i, j in zip(list1, list2):
    print('Before output is printed i wanted the heading to be %s' % j)
    print('This is the dataframe %s' % i)

然后您可以在打印标头后稍后在循环中打印您的数据帧i。

样本头输出：

Before output is printed i wanted the heading to be High
This is the data frame df1
Before output is printed i wanted the heading to be Medium
This is the data frame df2
Before output is printed i wanted the heading to be Low
This is the data frame df3
Before output is printed i wanted the heading to be Average
This is the data frame df4