我有各种格式的数据框
df.index
<class 'pandas.tseries.index.DatetimeIndex'>
[2009-10-23, ..., 2010-06-15]
Length: 161, Freq: None, Timezone: None
df.columns
Index(['A', 'B', 'C', 'D', 'E', 'F'], dtype='object')
时不时地执行这一行：
zeros_idx = df[ (df.A==0) | (df.B==0) | (df.C==0) | (df.D==0) ].index
我在这个堆栈跟踪中遇到以下错误：
zeros_idx = df[ (df.A==0) | (df.B==0) | (df.C==0) | (df.D==0) ].index
File "/usr/lib64/python3.4/site-packages/pandas/core/ops.py", line 811, in f
return self._combine_series(other, na_op, fill_value, axis, level)
File "/usr/lib64/python3.4/site-packages/pandas/core/frame.py", line 3158, in _combine_series
return self._combine_match_columns(other, func, level=level, fill_value=fill_value)
File "/usr/lib64/python3.4/site-packages/pandas/core/frame.py", line 3191, in _combine_match_columns
left, right = self.align(other, join='outer', axis=1, level=level, copy=False)
File "/usr/lib64/python3.4/site-packages/pandas/core/generic.py", line 3143, in align
fill_axis=fill_axis)
File "/usr/lib64/python3.4/site-packages/pandas/core/generic.py", line 3225, in _align_series
return_indexers=True)
File "/usr/lib64/python3.4/site-packages/pandas/core/index.py", line 1810, in join
return_indexers=return_indexers)
File "/usr/lib64/python3.4/site-packages/pandas/tseries/index.py", line 904, in join
return_indexers=return_indexers)
File "/usr/lib64/python3.4/site-packages/pandas/core/index.py", line 1820, in join
return_indexers=return_indexers)
File "/usr/lib64/python3.4/site-packages/pandas/core/index.py", line 1830, in join
return_indexers=return_indexers)
File "/usr/lib64/python3.4/site-packages/pandas/core/index.py", line 2083, in _join_monotonic
join_index, lidx, ridx = self._outer_indexer(sv, ov)
File "pandas/src/generated.pyx", line 8558, in pandas.algos.outer_join_indexer_object (pandas/algos.c:157803)
File "pandas/tslib.pyx", line 823, in pandas.tslib._Timestamp.__richcmp__ (pandas/tslib.c:15585)
TypeError: Cannot compare type 'Timestamp' with type 'str'