Python 如何复制datafram的最后一行并对复制的行进行更改？
我有以下数据帧：Python 如何复制datafram的最后一行并对复制的行进行更改？,python,python-3.x,pandas,Python,Python 3.x,Pandas,我有以下数据帧： Commodity Code Commodity Year Reporter Reporter ISO Partner Partner ISO Export Import Re-Export Re-Import 1564774 270900 Petroleum oils & oils obt. from bitum
Commodity Code Commodity Year Reporter Reporter ISO Partner Partner ISO Export Import Re-Export Re-Import
1564774 270900 Petroleum oils & oils obt. from bituminous min... 2013 Venezuela VEN Curaçao CUW 0.000000e+00 2.0 0.0 0.0
1563032 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Belgium BEL 2.404415e+08 0.0 0.0 0.0
1563066 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Brazil BRA 1.067652e+08 0.0 0.0 0.0
1563121 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Canada CAN 3.170861e+08 0.0 0.0 0.0
1563177 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN China CHN 1.014889e+10 0.0 0.0 0.0
1563353 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN France FRA 0.000000e+00 33.0 0.0 0.0
1563397 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Germany DEU 2.722320e+08 0.0 0.0 0.0
1563486 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN India IND 1.494257e+10 0.0 0.0 0.0
1563707 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Malaysia MYS 5.509827e+08 0.0 0.0 0.0
1563760 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Netherlands NLD 4.208213e+08 0.0 0.0 0.0
1563840 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Nicaragua NIC 3.877573e+07 0.0 0.0 0.0
1564055 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Singapore SGP 2.000000e+00 0.0 0.0 0.0
1564129 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Spain ESP 1.559714e+09 0.0 0.0 0.0
1564185 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Sweden SWE 6.652943e+08 0.0 0.0 0.0
1564281 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN USA USA 2.815425e+10 0.0 0.0 0.0
1564372 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN United Kingdom GBR 3.303344e+08 0.0 0.0 0.0
1563307 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Dominican Rep. DOM 6.038139e+08 0.0 0.0 0.0
1563590 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Japan JPN 4.834996e+08 0.0 0.0 0.0
1564420 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Uruguay URY 4.908717e+08 0.0 0.0 0.0
1564655 270900 Petroleum oils & oils obt. from bituminous min... 2013 Venezuela VEN Jamaica JAM 7.417692e+08 0.0 0.0 0.0
other_country_row = group.iloc[-1:]
Commodity Code Commodity Year Reporter Reporter ISO Partner Partner ISO Export Import Re-Export Re-Import
1564655 270900 Petroleum oils & oils obt. from bituminous min... 2013 Venezuela VEN Jamaica JAM 741769216.0 0.0 0.0 0.0
and I changed values on it, unfortunately, it is not copied and making changes on the last row of the data frame.
Commodity Code Commodity Year Reporter Reporter ISO Partner Partner ISO Export Import Re-Export Re-Import
1564774 270900 Petroleum oils & oils obt. from bituminous min... 2013 Venezuela VEN Curaçao CUW 0.000000e+00 2.0 0.0 0.0
1563032 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Belgium BEL 2.404415e+08 0.0 0.0 0.0
1563066 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Brazil BRA 1.067652e+08 0.0 0.0 0.0
1563121 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Canada CAN 3.170861e+08 0.0 0.0 0.0
1563177 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN China CHN 1.014889e+10 0.0 0.0 0.0
1563353 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN France FRA 0.000000e+00 33.0 0.0 0.0
1563397 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Germany DEU 2.722320e+08 0.0 0.0 0.0
1563486 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN India IND 1.494257e+10 0.0 0.0 0.0
1563707 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Malaysia MYS 5.509827e+08 0.0 0.0 0.0
1563760 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Netherlands NLD 4.208213e+08 0.0 0.0 0.0
1563840 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Nicaragua NIC 3.877573e+07 0.0 0.0 0.0
1564055 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Singapore SGP 2.000000e+00 0.0 0.0 0.0
1564129 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Spain ESP 1.559714e+09 0.0 0.0 0.0
1564185 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Sweden SWE 6.652943e+08 0.0 0.0 0.0
1564281 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN USA USA 2.815425e+10 0.0 0.0 0.0
1564372 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN United Kingdom GBR 3.303344e+08 0.0 0.0 0.0
1563307 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Dominican Rep. DOM 6.038139e+08 0.0 0.0 0.0
1563590 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Japan JPN 4.834996e+08 0.0 0.0 0.0
1564420 270900 Oils; petroleum oils and oils obtained from bi... 2013 Venezuela VEN Uruguay URY 4.908717e+08 0.0 0.0 0.0
1564655 270900 Petroleum oils & oils obt. from bituminous min... 2013 Venezuela VEN Other Other 1.478252e+10 0.0 0.0 0.0
1564655 270900 Petroleum oils & oils obt. from bituminous min... 2013 Venezuela VEN Other Other 1.478252e+10 0.0 0.0 0.0
正如您所看到的，Jamaice已被删除（我希望保留jamaica并添加最后一行）。如何处理此问题？使用切片调用
.ilocother\u country\u row=group.iloc[-1:].copy（）
默认情况下，这将返回数据的深度副本，您可以在不影响原始数据帧的情况下安全地编辑该副本。使用iloc分配新值：
df.iloc[-1]=[…]