python to R compatibility in feather with strings -


i hitting error when reading feather object r put out python session.

in python:

in [248]: import pandas pd  in [249]: pd.dataframe({'col': ['a','b','c']}).to_feather('strings_df.feather')

in r:

> library(feather) > df = read_feather('strings_df.feather') error in coldatafeather(x, i) :    raw() can applied 'raw', not 'list'

is related fact strings stored objects in pandas.series? any thoughts on what's happening here?

session info:

r

r version 3.3.1 (2016-06-21) platform: x86_64-apple-darwin13.4.0 (64-bit) running under: os x 10.10.5 (yosemite)

locale: [1] en_us.utf-8/en_us.utf-8/en_us.utf-8/c/en_us.utf-8/en_us.utf-8

attached base packages: [1] stats graphics grdevices utils
datasets methods base

other attached packages: [1] feather_0.3.0

loaded via namespace (and not attached): [1] assertthat_0.1 hms_0.2 tools_3.3.1 tibble_1.2 rcpp_0.12.5

python

'2.7.10 (default, jul 3 2015, 12:05:53) \n[gcc 4.2.1 compatible apple llvm 6.1.0 (clang-602.0.53)]'

pandas version: '0.20.3'

numpy version: '1.13.1'

the issue values in string column should of type unicode, not str. following works expected:

pd.dataframe({'col': [u'a',u'b',u'c']}).to_feather('strings_df.feather')

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