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RecursionError: maximum recursion depth exceeded in comparison for Decimal.quantize()

See original GitHub issue

I’m getting an endless loop which seems to be triggered by Decimal.quantize() calling RP2Decimal.__ne__ which then calls RP2Decimal.__eq__ which then calls Decimal.quantize() again.

I presume there is something wrong with my numbers, which I have yet to investigate.

...
  File "/home/rndstr/venv3/lib/python3.10/site-packages/rp2/rp2_decimal.py", line 40, in __eq__
    return (self - other).quantize(CRYPTO_DECIMAL_MASK).__eq__(ZERO)
  File "/usr/lib/python3.10/_pydecimal.py", line 2588, in quantize
    if ans != self:
  File "/home/rndstr/venv3/lib/python3.10/site-packages/rp2/rp2_decimal.py", line 43, in __ne__
    return not self.__eq__(other)
  File "/home/rndstr/venv3/lib/python3.10/site-packages/rp2/rp2_decimal.py", line 40, in __eq__
    return (self - other).quantize(CRYPTO_DECIMAL_MASK).__eq__(ZERO)
  File "/usr/lib/python3.10/_pydecimal.py", line 2588, in quantize
    if ans != self:
  File "/home/rndstr/venv3/lib/python3.10/site-packages/rp2/rp2_decimal.py", line 43, in __ne__
    return not self.__eq__(other)
  File "/home/rndstr/venv3/lib/python3.10/site-packages/rp2/rp2_decimal.py", line 40, in __eq__
    return (self - other).quantize(CRYPTO_DECIMAL_MASK).__eq__(ZERO)
  File "/home/rndstr/venv3/lib/python3.10/site-packages/rp2/rp2_decimal.py", line 69, in __sub__
    return RP2Decimal(Decimal.__sub__(self, other))
  File "/usr/lib/python3.10/_pydecimal.py", line 1257, in __sub__
    return self.__add__(other.copy_negate(), context=context)
  File "/home/rndstr/venv3/lib/python3.10/site-packages/rp2/rp2_decimal.py", line 64, in __add__
    return RP2Decimal(Decimal.__add__(self, other))
  File "/usr/lib/python3.10/_pydecimal.py", line 1202, in __add__
    ans = self._rescale(exp, context.rounding)
  File "/usr/lib/python3.10/_pydecimal.py", line 2625, in _rescale
    if not self:
  File "/usr/lib/python3.10/_pydecimal.py", line 815, in __bool__
    return self._is_special or self._int != '0'
RecursionError: maximum recursion depth exceeded in comparison

Issue Analytics

State:
Created a year ago
Comments:11 (5 by maintainers)

Top GitHub Comments

1reaction

rndstrcommented, Apr 17, 2022

I ended up running it with Docker where it works, posting as it may help others running into the same issue:

Create Dockerfile

FROM python:3.9
WORKDIR /usr/src/app
RUN pip3 install rp2

In same dir run

docker build --tag rp2

Go to your directory with input.ods and input.config files, run

docker run -it --rm --name rp2-script -v "$PWD":/usr/src/app -w /usr/src/app rp2 rp2_us input.config input.ods

0reactions

eprbellcommented, Apr 13, 2022

I tried your files and they worked on my machine:

> rp2_us loop.config loop.ods
 
INFO: Country: us
INFO: Accounting Method: fifo
INFO: Configuration file: loop.config
INFO: Input file: loop.ods
INFO: Processing ETH
INFO: Generating output for plugin 'rp2.plugin.report.rp2_full_report'
INFO: Plugin 'rp2.plugin.report.rp2_full_report' output: /private/tmp/output/fifo_rp2_full_report.ods
INFO: Generating output for plugin 'rp2.plugin.report.us.tax_report_us'
INFO: Plugin 'rp2.plugin.report.us.tax_report_us' output: /private/tmp/output/fifo_tax_report_us.ods
INFO: Log file: ./log/rp2_2022_04_12_21_22_19_512993.log
INFO: Generated output directory: output/
INFO: Done

I wonder if other Python packages using Decimal and high-precision math work on your machine: it might be an experiment worth trying.