'NoneType' object has no attribute 'replace'

[Crispinli]

I got the error when I run my code on Linux Machine as follows:

Traceback (most recent call last):
  File "/c_search_recall/eda_jd.py", line 40, in <module>
    report.to_file('data/jd_eda_report.html')
  File "/miniconda3/envs/recall/lib/python3.11/site-packages/ydata_profiling/profile_report.py", line 370, in to_file
    data = self.to_html()
           ^^^^^^^^^^^^^^
  File "/miniconda3/envs/recall/lib/python3.11/site-packages/ydata_profiling/profile_report.py", line 485, in to_html
    return self.html
           ^^^^^^^^^
  File "/miniconda3/envs/recall/lib/python3.11/site-packages/ydata_profiling/profile_report.py", line 283, in html
    self._html = self._render_html()
                 ^^^^^^^^^^^^^^^^^^^
  File "/miniconda3/envs/recall/lib/python3.11/site-packages/ydata_profiling/profile_report.py", line 400, in _render_html
    report = self.report
             ^^^^^^^^^^^
  File "/miniconda3/envs/recall/lib/python3.11/site-packages/ydata_profiling/profile_report.py", line 277, in report
    self._report = get_report_structure(self.config, self.description_set)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/miniconda3/envs/recall/lib/python3.11/site-packages/ydata_profiling/report/structure/report.py", line 387, in get_report_structure
    render_variables_section(config, summary),
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/miniconda3/envs/recall/lib/python3.11/site-packages/ydata_profiling/report/structure/report.py", line 162, in render_variables_section
    template_variables.update(render_map_type(config, template_variables))
                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/miniconda3/envs/recall/lib/python3.11/site-packages/ydata_profiling/report/structure/variables/render_text.py", line 100, in render_text
    overview_table_char, unitab = render_categorical_unicode(config, summary, varid)
                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/miniconda3/envs/recall/lib/python3.11/site-packages/ydata_profiling/report/structure/variables/render_categorical.py", line 139, in render_categorical_unicode
    category_alias_name = category_alias_name.replace("_", " ")
                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'replace'

python version: 3.11
ydata-profiling version: 4.6.4

Please help me, thx!

[fabclmnt]

HI @Crispinli ,

More detail is required as this seems to be related with the data that you are currently. Can you please provide the code that you are using as well as some information regarding the dataset?

[stnvapm]

I have the same issue
ydata_profiling in /usr/local/lib/python3.10/dist-packages (4.6.5)

import pandas as pd
from ydata_profiling import ProfileReport

df = pd.read_csv("/content/drive/MyDrive/linkdin_Job_data.csv")

report = ProfileReport(df, title='My Data')
report.to_file("my_report.html")

Summarize dataset: 100%
 27/27 [00:09<00:00,  1.72it/s, Completed]
Generate report structure:   0%
 0/1 [00:17<?, ?it/s]
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
[<ipython-input-13-4430cb1792cb>](https://localhost:8080/#) in <cell line: 9>()
      7 # Generate the data profiling report
      8 report = ProfileReport(df, title='My Data')
----> 9 report.to_file("my_report.html")

8 frames
[/usr/local/lib/python3.10/dist-packages/ydata_profiling/report/structure/variables/render_categorical.py](https://localhost:8080/#) in render_categorical_unicode(config, summary, varid)
    137         summary["category_alias_char_counts"].items(), key=lambda x: -len(x[1])
    138     ):
--> 139         category_alias_name = category_alias_name.replace("_", " ")
    140         cats.append(
    141             FrequencyTable(

AttributeError: 'NoneType' object has no attribute 'replace'

[vrbabu9000]

@stnvapm Were you able to find a solution for this error? It worked for me with python 3.10.6

[fabclmnt]

Hi @stnvapm ,

can you please share the python packages that you have installed in your environment as well as their versions?

If you could share more details on your data as well that would be helpful to reproduce.

[Mithrandir2k18]

I get a similar error when trying to call profile.to_file("report.html") on a profile with a pyspark dataframe (summarizing seems successful:

 in to_file
    data = self.to_html()
 in to_html
    return self.html
 in html
    self._html = self._render_html()
 in _render_html
    report = self.report
 in report
    self._report = get_report_structure(self.config, self.description_set)
 in get_report_structure
    render_variables_section(config, summary),
 in render_variables_section
    template_variables.update(render_map_type(config, template_variables))
 in render_real
    "value": fmt_numeric(
 inner
    return func(arg, *args, **kwargs)
.venv/lib/python3.10/site-packages/ydata_profiling/report/formatters.py", line 248, in fmt_numeric
    fmtted = f"{{:.{precision}g}}".format(value)
TypeError: unsupported format string passed to NoneType.__format__

Here's my pyproject.toml:

[project]
requires-python = ">=3.10"
dependencies = [
    "dask[dataframe]>=2024.10.0",
    "pyspark>=3.5.3",
    "setuptools>=75.2.0",
    "ydata-profiling[notebook,unicode]>=4.11.0",
]

Hope I'm not hijacking this issue, but it seemed stale anyway and also seems to be an issue with NoneType handling.

Also installing ydata-profiling[pyspark] tells me the extra pyspark doesn't exist, so I installed manually.