Cannot read some columns of sequential integers

[poliquin]

The readme says there's support for integer columns, but I get an error "LibrdataError: Invalid file, or file has unsupported features" trying to read even a simple, one column data frame of sequential integers. Maybe related to #30.

To Reproduce
Create the rds file from within R...

library(tidyverse)
df <- tibble(x=1:10)
write_rds(df, 'tmp.rds', compress='gz')

Now read the file from within Python...

import pyreadr
df = pyreadr.read_r('tmp.rds')
# Traceback (most recent call last):
# File "<stdin>", line 1, in <module>
#  File "/home/poliquin/anaconda3/envs/py38/lib/python3.8/site-packages/pyreadr/pyreadr.py", line 47, in read_r
#   parser.parse(path)
#  File "pyreadr/librdata.pyx", line 117, in pyreadr.librdata.Parser.parse
#  File "pyreadr/librdata.pyx", line 142, in pyreadr.librdata.Parser.parse
# pyreadr.custom_errors.LibrdataError: Invalid file, or file has unsupported features

Now, for something very strange, create the data frame in a slightly different way...

library(tidyverse)
df <- tibble(x=as.integer(c(1,2,3,4,5,6,7,8,9,10)))
write_rds(df, 'tmp.rds', compress='gz')

and everything works fine! ...

pyreadr.read_r('tmp.rds')
OrderedDict([(None,     x
0   1
1   2
2   3
3   4
4   5
5   6
6   7
7   8
8   9
9  10)])

File example
tmp.rds.zip

Expected behavior
It should not matter how the data frame is constructed in R. Reading a column of integers should work as in my second example.

Setup Information:
How did you install pyreadr? pip
Platform: Ubuntu Linux 20.04
Python Version: 3.8
Python Distribution: Anaconda
Using Virtualenv or condaenv? Yes, conda
R Version:

platform       x86_64-pc-linux-gnu
arch           x86_64
os             linux-gnu
system         x86_64, linux-gnu
status
major          4
minor          0.1
year           2020
month          06
day            06
svn rev        78648
language       R
version.string R version 4.0.1 (2020-06-06)
nickname       See Things Now

[ofajardo]

thanks for the reproducible example. I have posted an issue in the C library to see if they can fix it.

[ofajardo]

solved in pyreadr 0.3.4