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The dataset generation failed because of a cast error
Error code: DatasetGenerationCastError
Exception: DatasetGenerationCastError
Message: An error occurred while generating the dataset
All the data files must have the same columns, but at some point there are 7 new columns ({'sections_in_order', 'order_page', 'tabs_per_set', 'price_per_set_250_sets', 'binder_type', 'price_per_set_25_sets', 'seller'}) and 8 missing columns ({'ring_size', 'paper', 'recommended_sheets_with_15pct_headroom', 'max_90lb_tab_dividers', 'max_sheets', 'ring_style', 'calculator', 'source'}).
This happened while the csv dataset builder was generating data using
hf://datasets/tabzoola/custom-index-tab-prices/binder-tab-sets-by-use.csv (at revision 458b9c6ff872c09823d0ef224e1d894cbd9b751c), ['hf://datasets/tabzoola/custom-index-tab-prices@458b9c6ff872c09823d0ef224e1d894cbd9b751c/binder-capacity.csv', 'hf://datasets/tabzoola/custom-index-tab-prices@458b9c6ff872c09823d0ef224e1d894cbd9b751c/binder-tab-sets-by-use.csv', 'hf://datasets/tabzoola/custom-index-tab-prices@458b9c6ff872c09823d0ef224e1d894cbd9b751c/court-tab-rules.csv', 'hf://datasets/tabzoola/custom-index-tab-prices@458b9c6ff872c09823d0ef224e1d894cbd9b751c/custom-index-tab-prices.csv', 'hf://datasets/tabzoola/custom-index-tab-prices@458b9c6ff872c09823d0ef224e1d894cbd9b751c/index-tab-questions.csv', 'hf://datasets/tabzoola/custom-index-tab-prices@458b9c6ff872c09823d0ef224e1d894cbd9b751c/medical-chart-sections.csv', 'hf://datasets/tabzoola/custom-index-tab-prices@458b9c6ff872c09823d0ef224e1d894cbd9b751c/most-ordered-tab-sets.csv', 'hf://datasets/tabzoola/custom-index-tab-prices@458b9c6ff872c09823d0ef224e1d894cbd9b751c/most-ordered-tab-titles.csv', 'hf://datasets/tabzoola/custom-index-tab-prices@458b9c6ff872c09823d0ef224e1d894cbd9b751c/tab-title-trends.csv']
Please either edit the data files to have matching columns, or separate them into different configurations (see docs at https://hf.co/docs/hub/datasets-manual-configuration#multiple-configurations)
Traceback: Traceback (most recent call last):
File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1848, in _prepare_split_single
writer.write_table(table)
~~~~~~~~~~~~~~~~~~^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/arrow_writer.py", line 784, in write_table
self._write_table(pa_table, writer_batch_size=writer_batch_size)
~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/arrow_writer.py", line 795, in _write_table
pa_table = table_cast(pa_table, self._schema)
File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2378, in table_cast
return cast_table_to_schema(table, schema)
File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2306, in cast_table_to_schema
raise CastError(
...<3 lines>...
)
datasets.table.CastError: Couldn't cast
date: string
seller: string
binder_type: string
tabs_per_set: int64
sections_in_order: string
price_per_set_25_sets: double
price_per_set_250_sets: double
order_page: string
-- schema metadata --
pandas: '{"index_columns": [{"kind": "range", "name": null, "start": 0, "' + 1283
to
{'date': Value('string'), 'source': Value('string'), 'ring_size': Value('string'), 'ring_style': Value('string'), 'paper': Value('string'), 'max_sheets': Value('int64'), 'recommended_sheets_with_15pct_headroom': Value('int64'), 'max_90lb_tab_dividers': Value('int64'), 'calculator': Value('string')}
because column names don't match
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 1369, in compute_config_parquet_and_info_response
parquet_operations, partial, estimated_dataset_info = stream_convert_to_parquet(
~~~~~~~~~~~~~~~~~~~~~~~~~^
builder, max_dataset_size_bytes=max_dataset_size_bytes
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 948, in stream_convert_to_parquet
builder._prepare_split(split_generator=splits_generators[split], file_format="parquet")
~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1694, in _prepare_split
for job_id, done, content in self._prepare_split_single(
~~~~~~~~~~~~~~~~~~~~~~~~~~^
gen_kwargs=gen_kwargs, job_id=job_id, **_prepare_split_args
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
):
^
File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1850, in _prepare_split_single
raise DatasetGenerationCastError.from_cast_error(
...<4 lines>...
)
datasets.exceptions.DatasetGenerationCastError: An error occurred while generating the dataset
All the data files must have the same columns, but at some point there are 7 new columns ({'sections_in_order', 'order_page', 'tabs_per_set', 'price_per_set_250_sets', 'binder_type', 'price_per_set_25_sets', 'seller'}) and 8 missing columns ({'ring_size', 'paper', 'recommended_sheets_with_15pct_headroom', 'max_90lb_tab_dividers', 'max_sheets', 'ring_style', 'calculator', 'source'}).
This happened while the csv dataset builder was generating data using
hf://datasets/tabzoola/custom-index-tab-prices/binder-tab-sets-by-use.csv (at revision 458b9c6ff872c09823d0ef224e1d894cbd9b751c), ['hf://datasets/tabzoola/custom-index-tab-prices@458b9c6ff872c09823d0ef224e1d894cbd9b751c/binder-capacity.csv', 'hf://datasets/tabzoola/custom-index-tab-prices@458b9c6ff872c09823d0ef224e1d894cbd9b751c/binder-tab-sets-by-use.csv', 'hf://datasets/tabzoola/custom-index-tab-prices@458b9c6ff872c09823d0ef224e1d894cbd9b751c/court-tab-rules.csv', 'hf://datasets/tabzoola/custom-index-tab-prices@458b9c6ff872c09823d0ef224e1d894cbd9b751c/custom-index-tab-prices.csv', 'hf://datasets/tabzoola/custom-index-tab-prices@458b9c6ff872c09823d0ef224e1d894cbd9b751c/index-tab-questions.csv', 'hf://datasets/tabzoola/custom-index-tab-prices@458b9c6ff872c09823d0ef224e1d894cbd9b751c/medical-chart-sections.csv', 'hf://datasets/tabzoola/custom-index-tab-prices@458b9c6ff872c09823d0ef224e1d894cbd9b751c/most-ordered-tab-sets.csv', 'hf://datasets/tabzoola/custom-index-tab-prices@458b9c6ff872c09823d0ef224e1d894cbd9b751c/most-ordered-tab-titles.csv', 'hf://datasets/tabzoola/custom-index-tab-prices@458b9c6ff872c09823d0ef224e1d894cbd9b751c/tab-title-trends.csv']
Please either edit the data files to have matching columns, or separate them into different configurations (see docs at https://hf.co/docs/hub/datasets-manual-configuration#multiple-configurations)Need help to make the dataset viewer work? Make sure to review how to configure the dataset viewer, and open a discussion for direct support.
date string | source string | ring_size string | ring_style string | paper string | max_sheets int64 | recommended_sheets_with_15pct_headroom int64 | max_90lb_tab_dividers int64 | calculator string |
|---|---|---|---|---|---|---|---|---|
2026-10-02 | Tabzoola | 1/2 in | round | 20_lb_bond | 91 | 79 | 52 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 1/2 in | d_ring | 20_lb_bond | 118 | 103 | 67 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 1/2 in | round | 24_lb_bond | 77 | 67 | 52 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 1/2 in | d_ring | 24_lb_bond | 101 | 87 | 67 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 1/2 in | round | 28_lb_bond | 62 | 54 | 52 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 1/2 in | d_ring | 28_lb_bond | 81 | 71 | 67 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 1 in | round | 20_lb_bond | 182 | 158 | 104 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 1 in | d_ring | 20_lb_bond | 237 | 206 | 135 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 1 in | round | 24_lb_bond | 155 | 135 | 104 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 1 in | d_ring | 24_lb_bond | 202 | 175 | 135 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 1 in | round | 28_lb_bond | 125 | 109 | 104 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 1 in | d_ring | 28_lb_bond | 163 | 142 | 135 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 1-1/2 in | round | 20_lb_bond | 273 | 238 | 156 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 1-1/2 in | d_ring | 20_lb_bond | 356 | 309 | 203 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 1-1/2 in | round | 24_lb_bond | 232 | 202 | 156 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 1-1/2 in | d_ring | 24_lb_bond | 303 | 263 | 203 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 1-1/2 in | round | 28_lb_bond | 188 | 164 | 156 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 1-1/2 in | d_ring | 28_lb_bond | 245 | 213 | 203 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 2 in | round | 20_lb_bond | 365 | 317 | 208 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 2 in | d_ring | 20_lb_bond | 474 | 413 | 271 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 2 in | round | 24_lb_bond | 310 | 270 | 208 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 2 in | d_ring | 24_lb_bond | 404 | 351 | 271 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 2 in | round | 28_lb_bond | 251 | 218 | 208 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 2 in | d_ring | 28_lb_bond | 327 | 284 | 271 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 3 in | round | 20_lb_bond | 547 | 476 | 312 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 3 in | d_ring | 20_lb_bond | 712 | 619 | 407 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 3 in | round | 24_lb_bond | 465 | 405 | 312 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 3 in | d_ring | 24_lb_bond | 606 | 527 | 407 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 3 in | round | 28_lb_bond | 377 | 328 | 312 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 3 in | d_ring | 28_lb_bond | 491 | 427 | 407 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 4 in | d_ring | 20_lb_bond | 949 | 826 | 542 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 4 in | d_ring | 24_lb_bond | 808 | 703 | 542 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 4 in | d_ring | 28_lb_bond | 655 | 569 | 542 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 5 in | d_ring | 20_lb_bond | 1,187 | 1,032 | 678 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 5 in | d_ring | 24_lb_bond | 1,010 | 878 | 678 | https://tabzoola.com/binder-size-calculator |
2026-10-02 | Tabzoola | 5 in | d_ring | 28_lb_bond | 818 | 712 | 678 | https://tabzoola.com/binder-size-calculator |
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End of preview.
Tabzoola Tab Price Index and Custom Index Tab Open Data
Tabzoola (Tabzoola LLC) is the sister company of Anselmo Die & Index, with the same owner, John Anselmo. Tabzoola sells custom index tabs at tabzoola.com, and every order is made at the Anselmo Die & Index plant in Schaumburg, Illinois. Tabzoola publishes its complete price list and its binder capacity figures as open data. The price file is the source data of the Tabzoola Tab Price Index, the monthly published price of a custom tab set; the October 2026 edition puts a 5-tab paper set at $2.35 per set at 100 sets, setup included (https://tabzoola.com/tab-price-index/2026-10). Custom tab printers rarely publish prices, so this is a citable reference for what custom printed binder tabs cost in the United States.
Files
| File | What it holds |
|---|---|
custom-index-tab-prices.csv |
Source data of the Tabzoola Tab Price Index. Paper and poly tab sets of 3 to 25 tabs, at 25 to 1,000 sets, plain and binder-ready (collated, 3-hole punched). Per-set and order-total prices in USD, setup included. |
binder-tab-sets-by-use.csv |
Ready-made section lists by binder type (estate planning, trust administration, probate, trial notebook, legal exhibits 1–25, wealth management client review, law office case files, real estate closings, CPA audit workpapers and more), priced at 25 and 250 sets, with the order page for each. |
binder-capacity.csv |
How many sheets fit in every 3-ring binder size, 1/2" to 5", round ring and D-ring, on 20, 24 and 28 lb paper, with the recommended fill (15% room to turn pages) and how many tab dividers fit. The same arithmetic as the free calculator at tabzoola.com/binder-size-calculator. |
medical-chart-sections.csv |
Chart divider section lists by care setting — physician practice, outpatient clinic, hospital inpatient unit, long-term care resident chart, behavioral health, dental, chiropractic, veterinary and clinical research regulatory binders — with the sections in filing order, the tab count and the typical tab cut. Common conventions, not clinical guidance. Current copy: https://tabzoola.com/medical-chart-sections.csv |
index-tab-questions.csv / .jsonl |
890 question-and-answer pairs about custom index tabs, binder dividers and how they are made, ordered and used, in Tabzoola's own words: the FAQs from 124 product pages and 34 guides on tabzoola.com, each with its topic and source URL. Plain-language reference answers, not legal or clinical advice. |
most-ordered-tab-titles.csv |
What people actually print on index tabs: 924 tab titles ordered by three or more different companies, from 68,984 printed tabs on 5,823 jobs for 804 companies in Tabzoola's own production records, 1996–2026. Ranked by how many companies ordered each title, with jobs, first and last year, and the typical position in the set. Brand, store and building names removed; no customer is identifiable. Page: https://tabzoola.com/most-ordered-tab-titles |
most-ordered-tab-sets.csv |
The complete tab sets (every title, in order) that three or more different companies ordered exactly alike, same source and period. |
tab-title-trends.csv |
How tab titles changed over 30 years: for the titles that rose and fell most, the share of companies active in each decade (1996–2005, 2006–2015, 2016–2026) whose orders included the title, with the company counts. Manual and report headings (Introduction, Glossary, Appendix, Index) fell; loan, insurance and estate client-file titles (Insurance, Mortgage, Appraisal, Credit Report) rose. Same privacy rule: 3+ companies per title. Page: https://tabzoola.com/most-ordered-tab-titles |
court-tab-rules.csv |
Court exhibit tab rules: which courts require, allow or ban protruding exhibit tabs, one row per rule with the verbatim quote, the official source URL and the date checked. 90 rules from 85 courts and tribunals as of 2026-10-16. Current copy: https://tabzoola.com/court-tab-rules.csv |
headline.json |
The headline figures for the current edition. |
CITATION.cff |
Citation metadata (Zenodo DOI 10.5281/zenodo.23253693). |
index-tab-questions.csv
| Column | Meaning |
|---|---|
question, answer |
The question as a buyer asks it, and the answer exactly as the page gives it |
topic |
The page's subject (for example "Estate Planning Binder Tabs") |
source_url, source_type |
The tabzoola.com page the pair comes from, and whether it is a product page or a guide |
publisher, checked |
Always Tabzoola, and the export date; prices quoted inside answers are the prices on that date |
most-ordered-tab-titles.csv
| Column | Meaning |
|---|---|
rank, title |
Rank by companies, and the title as most customers typed it |
family |
word, number, letter, roman numeral, exhibit number, numbered heading (Section 3, Appendix B, Building 7…) or month |
companies, jobs |
How many different companies ordered the title (an account's many offices count once), and on how many jobs it appeared |
first_year, last_year, typical_position |
When it was first and last ordered, and where it usually sits in the set, counted from the front |
most-ordered-tab-sets.csv lists whole sets with titles_in_order separated by |. Aggregated from Anselmo Die & Index production records; a title is published only when at least three different companies ordered it.
Key figures (October 2026)
- A custom printed 5-tab paper set: $5.45 a set at the 25-set minimum, $2.35 at 100 sets, $1.08 at 1,000. Setup and printed titles included.
- Finished for a ring binder (collated, 3-hole punched), an 8-tab set: $8.17 a set at 25 sets, $2.61 at 250.
- A 1" round-ring binder holds about 180 sheets of 20 lb paper; a 2" about 365; a 3" D-ring about 700.
Source and updates
Every price comes from Tabzoola's pricing engine on the date in the date column; the monthly editions of the Tabzoola Tab Price Index are kept at permanent, never-revised addresses at https://tabzoola.com/tab-price-index . Quote a figure as: Tabzoola Tab Price Index, edition. The canonical copy of this dataset is https://github.com/anselmoindex/custom-index-tab-prices .
License and citation
CC BY 4.0. Quote and republish freely with credit: "Source: Tabzoola (tabzoola.com)". Full form: Tabzoola (Anselmo Die & Index), Schaumburg, Illinois. Tabzoola Tab Price Index and Custom Index Tab Open Data, https://tabzoola.com/tab-price-index .
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