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エラー全文掲載しました。
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@@ -14,6 +14,57 @@
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### 発生している問題・エラーメッセージ
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```
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ValueError Traceback (most recent call last)
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<ipython-input-5-5e185effa98f> in <module>()
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18 data.E = data.E.str.split()
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---> 20 data = data.astype(np.float)
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22 data
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5 frames
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/usr/local/lib/python3.6/dist-packages/pandas/core/generic.py in astype(self, dtype, copy, errors, **kwargs)
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5880 # else, only a single dtype is given
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5881 new_data = self._data.astype(
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-> 5882 dtype=dtype, copy=copy, errors=errors, **kwargs
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5883 )
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5884 return self._constructor(new_data).__finalize__(self)
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/usr/local/lib/python3.6/dist-packages/pandas/core/internals/managers.py in astype(self, dtype, **kwargs)
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579
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580 def astype(self, dtype, **kwargs):
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--> 581 return self.apply("astype", dtype=dtype, **kwargs)
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582
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583 def convert(self, **kwargs):
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/usr/local/lib/python3.6/dist-packages/pandas/core/internals/managers.py in apply(self, f, axes, filter, do_integrity_check, consolidate, **kwargs)
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436 kwargs[k] = obj.reindex(b_items, axis=axis, copy=align_copy)
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437
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--> 438 applied = getattr(b, f)(**kwargs)
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439 result_blocks = _extend_blocks(applied, result_blocks)
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440
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/usr/local/lib/python3.6/dist-packages/pandas/core/internals/blocks.py in astype(self, dtype, copy, errors, values, **kwargs)
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557
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558 def astype(self, dtype, copy=False, errors="raise", values=None, **kwargs):
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--> 559 return self._astype(dtype, copy=copy, errors=errors, values=values, **kwargs)
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560
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561 def _astype(self, dtype, copy=False, errors="raise", values=None, **kwargs):
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/usr/local/lib/python3.6/dist-packages/pandas/core/internals/blocks.py in _astype(self, dtype, copy, errors, values, **kwargs)
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641 # _astype_nansafe works fine with 1-d only
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642 vals1d = values.ravel()
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--> 643 values = astype_nansafe(vals1d, dtype, copy=True, **kwargs)
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644
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645 # TODO(extension)
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/usr/local/lib/python3.6/dist-packages/pandas/core/dtypes/cast.py in astype_nansafe(arr, dtype, copy, skipna)
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727 if copy or is_object_dtype(arr) or is_object_dtype(dtype):
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728 # Explicit copy, or required since NumPy can't view from / to object.
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--> 729 return arr.astype(dtype, copy=True)
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730
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731 return arr.view(dtype)
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ValueError: setting an array element with a sequence.
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```
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