Pandas 错误“***ValueError：长度不匹配：预期轴有 0 个元素，新值有……”
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Pandas error "***ValueError: Length mismatch: Expected axis has 0 elements, new values have..."
提问by DrMisha
I am getting an error when accessing data within a Pandas DataFrame df:
在 Pandas DataFrame df 中访问数据时出现错误：
ipdb> df.loc[1988, 'ATTEND']
*** ValueError: Length mismatch: Expected axis has 0 elements, new values have 1481 elements
1988 and 'ATTEND' are both in df:
1988 和 'ATTEND' 都在df 中：
ipdb> 1988 in df.index
True
ipdb> 'ATTEND' in df.columns
True
I have no idea what this error is about. Any thoughts?
我不知道这个错误是关于什么的。有什么想法吗？
Thanks in advance.
提前致谢。
Example:
例子：
ipdb> df.iloc[21875:21880, 277:280]
FUND ATTEND MAATTEND
1988 3 1 4
1988 2 3 0
1988 2 2 2
1988 2 2 7
1988 2 3 2
ipdb> df.loc[1988, 'ATTEND']
*** ValueError: Length mismatch: Expected axis has 0 elements, new values have 1481 elements
GSSFilename = 'GSS Dataset/GSS7212_R2_copy.sav'
data = srw.SavReader(pathToData + GSSFilename)
df = pd.DataFrame(data.all(), index=data[:,0], columns=ALL_VARIABLE_NAMES)
with data:
data = np.array(data.all())
UPDATE: I think this problem was caused by two different Python instances accessing the same .sav file.
更新：我认为这个问题是由两个不同的 Python 实例访问同一个 .sav 文件引起的。
采纳答案by DrMisha
I think this problem was caused by two different Python instances accessing the same .sav file
我认为这个问题是由两个不同的 Python 实例访问同一个 .sav 文件引起的
