pandas 'DataFrame' 对象没有属性 'isna'
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'DataFrame' object has no attribute 'isna'
提问by MikiBelavista
I have adapted one machine learning code for one my project.The code that worked fine on my laptop ,now makes problems on my desktop.I am checking all data frame columns for missing values.
我已经为我的一个项目改编了一个机器学习代码。在我的笔记本电脑上运行良好的代码，现在在我的桌面上出现问题。我正在检查所有数据框列是否有缺失值。
File "g100.py", line 11, in <module>
print(dfs.columns[dfs.isna().any()].tolist())
AttributeError: 'DataFrame' object has no attribute 'isna'
My installed panda versions and dependencies
我安装的Pandas版本和依赖项
d.show_versions(as_json=False)
INSTALLED VERSIONS
------------------
commit: None
python: 3.6.3.final.0
python-bits: 64
OS: Linux
OS-release: 4.13.0-37-generic
machine: x86_64
processor: x86_64
byteorder: little
LC_ALL: None
LANG: en_US.UTF-8
LOCALE: en_US.UTF-8
pandas: 0.20.3
pytest: 3.4.2
pip: 9.0.3
setuptools: 38.5.1
Cython: None
numpy: 1.11.3
scipy: 0.19.0
xarray: None
IPython: 6.2.1
sphinx: None
patsy: 0.5.0
dateutil: 2.6.0
pytz: 2017.3
blosc: None
bottleneck: None
tables: 3.4.2
numexpr: 2.6.4
feather: None
matplotlib: 2.1.2
openpyxl: None
xlrd: 1.1.0
xlwt: None
xlsxwriter: None
lxml: None
bs4: 4.6.0
html5lib: 0.9999999
sqlalchemy: 1.1.9
pymysql: None
psycopg2: 2.7.4 (dt dec pq3 ext lo64)
jinja2: 2.10
s3fs: None
pandas_gbq: None
pandas_datareader: 0.6.0
I can find an explanation why isna gives me an AttributeError.
我可以找到解释为什么 isna 给我一个 AttributeError。
回答by Ami Tavory
If you compare the 0.20 documentation for "Working with missing data"with that of 0.22, you can see that the former uses isnull, whereas the latter uses isna.
如果将0.20 的“使用缺失数据”文档与0.22 的文档进行比较，您可以看到前者使用isnull，而后者使用isna.
In fact the 0.22 documentation for isnullstates
alias of isna
isna 的别名
For your version, try isnull, therefore.
对于您的版本，请尝试isnull，因此。
