类型错误：unhashable类型：“Int64Index”

我的代码是导致我的问题的段是类型错误：unhashable类型：“Int64Index”

def Half_Increase(self): 
    self.keg_count=summer17.iloc[self.result_rows,2].values[0] 
    self.keg_count +=1 
    summer17[self.result_rows,2] = self.keg_count 
    print(keg_count)

所以这个功能是当按下按钮控件执行。它应该从数据框中的特定单元格中获取值，向其中添加1，然后将新值返回给数据框。（我不能完全肯定，如果这是这样做的正确方法。）

我收到以下错误

Exception in Tkinter callback 
Traceback (most recent call last): 

    File "C:\Python3.6\lib\tkinter\__init__.py", line 1699, in __call__ 
    return self.func(*args) 
    File "beerfest_program_v0.3.py", line 152, in Half_Increase 
    summer17[self.result_rows,2] = self.keg_count 
    File "C:\Python3.6\lib\site-packages\pandas\core\frame.py", line 2331, in __setitem__ 
    self._set_item(key, value) 
    File "C:\Python3.6\lib\site-packages\pandas\core\frame.py", line 2397, in _set_item 
    value = self._sanitize_column(key, value) 
    File "C:\Python3.6\lib\site-packages\pandas\core\frame.py", line 2596, in _sanitize_column 
    if broadcast and key in self.columns and value.ndim == 1: 
    File "C:\Python3.6\lib\site-packages\pandas\core\indexes\base.py", line 1640, in __contains__ 
    hash(key) 
    File "C:\Python3.6\lib\site-packages\pandas\core\indexes\base.py", line 1667, in __hash__ 
    raise TypeError("unhashable type: %r" % type(self).__name__) 
TypeError: unhashable type: 'Int64Index'

我猜这事做与变量类型不匹配，但我看了，不能找到如何解决这个问题。

来源

2017-09-03 jon

我想你需要iloc：

summer17.iloc[result_rows,2] += 1

样品：

summer17 = pd.DataFrame({'a':[1,2,3], 
         'b':[3,4,5], 
         'c':[5,9,7]}) 
#if reselt_rows is scalar 
result_rows = 1 

print(summer17) 
    a b c 
0 1 3 5 
1 2 4 9 
2 3 5 7 

summer17.iloc[result_rows,2] += 1 
print(summer17) 
    a b c 
0 1 3 5 
1 2 4 10 
2 3 5 7

是一样的：

#get value 
keg_count=summer17.iloc[result_rows,2] 
#increment 
keg_count +=1 
#set value 
summer17.iloc[result_rows,2] = keg_count 
print(summer17) 
    a b c 
0 1 3 5 
1 2 4 10 
2 3 5 7

但如果result_rows是list或1d array：

result_rows = [1,2] 

#get all values per positions defined in result_rows 
#filter only first value by values[0] 
keg_count=summer17.iloc[result_rows,2].values[0] 
#increment 
keg_count +=1 
#set all values of result_rows by incremented value 
summer17.iloc[result_rows,2] = keg_count 
print(summer17) 
    a b c 
0 1 3 5 
1 2 4 10 
2 3 5 10

来源

2017-09-03 14:17:02 jezrael

这比我想要做的要简单得多。 – jon

类型错误：unhashable类型：“Int64Index”

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