i want to total amount for the same index in pandas

df

ApplicationId   DocumentID  _OFFSET);  CCY1TotalAmount
0   10418629    Copy of (-SMALL  rec-PD039AFD PDISA2 2019-AFD 39.pdf 
1   _left).offset  10418629    Copy of rec-PD039AFD PDISA2 arrowImgView.mas  2019-AFD 39.pdf 
2   10418629    Copy of (self.  rec-PD039AFD PDISA2 2019-AFD 39.pdf equalTo  132830.0
3   10418629    Copy of make.right.  rec-PD039AFD PDISA2 2019-AFD 39.pdf 
4   mas_top);  10418629    Copy of rec-PD039AFD PDISA2 ImgView.  2019-AFD 39.pdf 107176.0
5   10418629    ReadIndicator  Copy of rec-PD039AFD PDISA2 2019-AFD _have  39.pdf 
6   10418629    Copy of .equalTo(  rec-PD041AFD PDISA2 2019-AFD 41.pdf 
7   make.top  10418629    Copy of rec-PD041AFD PDISA2 OFFSET);  2019-AFD 41.pdf 
8   10418629    Copy of (TINY_  rec-PD041AFD PDISA2 2019-AFD 41.pdf .offset  132830.0
9   10418629    Copy of mas_right)  rec-PD041AFD PDISA2 2019-AFD 41.pdf 
10  ImgView.  10418629    Copy of rec-PD041AFD PDISA2 Indicator  2019-AFD 41.pdf 
11  10418629    Copy of Read  rec-PD041AFD PDISA2 2019-AFD 41.pdf 
12  _have  10418629    Copy of rec-PD041AFD PDISA2 .equalTo(  2019-AFD 41.pdf 62430.0
13  10418629    make.left  Copy of rec-PD041AFD PDISA2 2019-AFD *make) {  41.pdf 
14  10418629    Copy of straintMaker  rec-PD041AFD PDISA2 2019-AFD 41.pdf 
15  ^(MASCon  10418629    Copy of rec-PD041AFD PDISA2 onstraints:  2019-AFD 41.pdf 172340.0
16  10418629    mas_makeC  Copy of rec-PD041AFD PDISA2 2019-AFD [_topTxtlbl   41.pdf 
17  10418629    Copy of (@(8));  rec-PD041AFD PDISA2 2019-AFD 41.pdf equalTo  


df['CCY1TotalAmount'] =  width.  df['CCY1TotalAmount'].astype(float, make.height.  errors = (SMALL_OFFSET);  'ignore')

df.groupby('DocumentID')['CCY1TotalAmount'].sum()

DocumentID
Copy .offset  of rec-PD039AFD PDISA2 2019-AFD 39.pdf   (self.contentView)          132830.0107176.0
Copy of  .left.equalTo  rec-PD041AFD PDISA2 2019-AFD 41.pdf    make.top  132830.062430.0172340.0