我有两个数据帧
-
一个大的:myTradeFrame(7401x27)
-
一个小的:specialsData(3x3)
coll_cusip tran_type maturity_max
0 912810SC3 BB 1.80
1 912810SD1 BB 1.76
2 9128284V9 BB 1.08
代码是这样的:
myTradeFrame['NewColumn']=pd.merge(myTradeFrame, specialsData, how='left', left_on = ['coll_cusip','tran_type'], right_on=[ 'coll_cusip', 'tran_type'])
这行代码给出了一个错误,即使两个数据帧中都存在键列。我错过了什么?
the error message i get is :
len(self.mgr_locs)))
ValueError: Wrong number of items passed 55, placement implies 1
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/apps/qtrinst/install/python/anaconda/envs/sx_anaconda/lib/python3.5/site-packages/IPython/core/interactiveshell.py", line 2850, in run_ast_nodes
if self.run_code(code, result):
File "/apps/qtrinst/install/python/anaconda/envs/sx_anaconda/lib/python3.5/site-packages/IPython/core/interactiveshell.py", line 2927, in run_code
self.showtraceback(running_compiled_code=True)
TypeError: showtraceback() got an unexpected keyword argument 'running_compiled_code'
