我试图将新记录插入到数据框中,但收到此错误 - DataFrame 构造函数未正确调用
。
这是我的代码,
import pandas as pd
#defining the dataframe
dfHeader = { 'Name': [], 'Daily': [],'Weekly': [],'Monthly': [],'Yearly': [],
'Area': [], 'Latitude':[] , 'Longitude':[] ,'Amenity': [] }
dFrame = pd.DataFrame(dfHeader)
print(dFrame)
Name = "NA"
DailyPrice = "NA"
WeeklyPrice = "NA"
MonthlyPrice = "NA"
YearlyPrice = "NA"
Area = "NA"
latitude = "NA"
longitude = "NA"
Amenity = "NA"
row = (Name, DailyPrice, WeeklyPrice, MonthlyPrice, YearlyPrice, Area, latitude, longitude, Amenity)
print(row)
dFrame = dFrame.append(pd.DataFrame(row))
请帮我解决这个问题。
最佳答案
如果您需要添加单行:
In [136]: dFrame.loc[len(dFrame)] = row
In [137]: dFrame
Out[137]:
Amenity Area Daily Latitude Longitude Monthly Name Weekly Yearly
0 NA NA NA NA NA NA NA NA NA
注意:通常,首先将数据收集到列表列表中,然后调用 pd.DataFrame()
构造函数,通常会更好、更快、消耗更少的内存(这取决于......) >一次:
In [138]: data = [row, np.arange(9)]
In [139]: cols = 'Amenity Area Daily Latitude Longitude Monthly Name Weekly Yearly'.split()
In [140]: df = pd.DataFrame(data, columns=cols)
In [141]: df
Out[141]:
Amenity Area Daily Latitude Longitude Monthly Name Weekly Yearly
0 NA NA NA NA NA NA NA NA NA
1 0 1 2 3 4 5 6 7 8
关于python - 将新行附加到现有数据框,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/47500081/