我有一个五行三列的熊猫数据框。我想创建一个函数,其中我的代码返回最后一行大于第一行的列。在我的代码示例中,我希望它生成一个列名为“Temp01”的列表。在创建 if / else 以检查最后一行比第一行长的列时,我摸索了。下面是我的代码:
#Import pandas package
import pandas as pd
#Create Dataframe
df0 = pd.DataFrame({'Temp01':[10,20,30,40,15],'Temp02':[50,60,70,70,45],'Temp03':[80,90,100,100,75]})
#empty list with column names
test =[]
for column in df0.columns:
#df0.column[-1] - Last row of each dataframe column
#df0.column[0] - First row of each dataframe column
if df0.column[-1]> df0.column[0]:
text = column
test.append(text)
else:
pass
print(test)
答案 0 :(得分:1)
import pandas as pd
#Create Dataframe
df0 = pd.DataFrame({'Temp01':[10,20,30,40,15],'Temp02':[50,60,70,70,45],'Temp03':[80,90,100,100,75]})
lst=[]
for col_name in df0.columns:
if df0[col_name].iloc[-1]>df0[col_name].iloc[0]:
lst.append(col_name)
print(lst)
答案 1 :(得分:1)
m = (df0.tail(1).values > df0.head(1).values)[0]
print(df0.columns[m].values)
打印:
['Temp01']