Exception: input_arrays parameter missing required data key: close

[tesla-cat]

I am trying to make my own DataFrame class since I find pandas too slow

class Indexer:
    def __init__(s, df): s.df = df
    def __getitem__(s, k): return s.df[k[1]][k[0]] 
    def __setitem__(s, k, v): s.df[k[1]][k[0]] = v
class MyDataFrame(dict):
    def __init__(s, arr, columns):
        s.d = {} 
        for i,c in enumerate(columns): s.d[c] = arr[:,i]
    def __getitem__(s, k): return s.d[k]
    def __setitem__(s, k, v): s.d[k] = v
    @property
    def loc(s): return Indexer(s)

import talib.abstract as ta
candles = np.random.rand(100,6)
df = MyDataFrame(candles, columns=['date','open','high','low','close','volume'])
print(type(df['close']))
df['ma'] = ta.SMA(df, 30)

but this gives error:

<class 'numpy.ndarray'>
Traceback (most recent call last):
  File "c:\Users\rick\Desktop\simpleTrade\test.py", line 91, in <module>
    df['ma'] = ta.SMA(df, 30)
  File "talib/_abstract.pxi", line 398, in talib._ta_lib.Function.__call__
  File "talib/_abstract.pxi", line 270, in talib._ta_lib.Function.set_function_args
  File "talib/_abstract.pxi", line 221, in talib._ta_lib.Function.set_input_arrays 
Exception: input_arrays parameter missing required data key: close

how to fix this?

[mrjbq7]

By default it expects columns named “close” containing numeric inputs for whatever function you are calling.

On Sep 2, 2021, at 8:23 AM, 丁瑞奇 @.***> wrote:

 I am trying to make my own DataFrame class since I find pandas too slow

class Indexer: def init(s, df): s.df = df def getitem(s, k): return s.df[k[1]][k[0]] def setitem(s, k, v): s.df[k[1]][k[0]] = v class MyDataFrame(dict): def init(s, arr, columns): s.d = {} for i,c in enumerate(columns): s.d[c] = arr[:,i] def getitem(s, k): return s.d[k] def setitem(s, k, v): s.d[k] = v @property def loc(s): return Indexer(s) but this gives error:

Exception: input_arrays parameter missing required data key: close how to fix this?

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