AttributeError: module 'pandas' has no attribute 'Float64Dtype'

[JohannesWiesner]

Describe the issue or bug

I get an AttributeError: module 'pandas' has no attribute 'Float64Dtype' when trying to import pandas2ri.

To Reproduce

from rpy2.robjects import pandas2ri

Error

  Cell In[2], line 1
    from rpy2.robjects import pandas2ri

  File ~/.conda/envs/test_1/lib/python3.9/site-packages/rpy2/robjects/pandas2ri.py:152
    pandas.Float64Dtype: functools.partial(

  File ~/.conda/envs/test_1/lib/python3.9/site-packages/pandas/__init__.py:258 in __getattr__
    raise AttributeError(f"module 'pandas' has no attribute '{name}'")

AttributeError: module 'pandas' has no attribute 'Float64Dtype'

Additional context

(csp_wiesner_johannes) johannes.wiesner@pf41jell:~/work/repos/tcy$ conda activate test_1
(test_1) johannes.wiesner@pf41jell:~/work/repos/tcy$ python -m rpy2.situation
rpy2 version:
3.5.8
Python version:
3.9.16 | packaged by conda-forge | (main, Feb  1 2023, 21:39:03) 
[GCC 11.3.0]
Looking for R's HOME:
    Environment variable R_HOME: None
    Calling `R RHOME`: /home/johannes.wiesner/.conda/envs/test_1/lib/R
    Environment variable R_LIBS_USER: None
R's additions to LD_LIBRARY_PATH:

R version:
    In the PATH: R version 4.2.2 (2022-10-31) -- "Innocent and Trusting"
    Loading R library from rpy2: OK
Additional directories to load R packages from:
None
C extension compilation:
  include:
  ['/home/johannes.wiesner/.conda/envs/test_1/lib/R/include']
  libraries:
  ['R', 'pcre2-8', 'lzma', 'bz2', 'z', 'rt', 'dl', 'm', 'iconv', 'icuuc', 'icui18n']
  library_dirs:
  ['/home/johannes.wiesner/.conda/envs/test_1/lib', '/home/johannes.wiesner/.conda/envs/test_1/lib/R/lib', '/home/johannes.wiesner/.conda/envs/test_1/lib']
  extra_compile_args:
  ['-std=c99']
  extra_link_args:
  ['-Wl,--export-dynamic', '-fopenmp', '-Wl,-O2', '-Wl,--sort-common', '-Wl,--as-needed', '-Wl,-z,relro', '-Wl,-z,now', '-Wl,--disable-new-dtags', '-Wl,--gc-sections', '-Wl,--allow-shlib-undefined', '-Wl,-rpath,/home/johannes.wiesner/.conda/envs/test_1/lib', '-Wl,-rpath-link,/home/johannes.wiesner/.conda/envs/test_1/lib']
Directory for the R shared library:
lib

Versions of pandas and R

pandas: 1.1.5
R installed with conda r-base: 4.2.2

[JohannesWiesner]

Could solve it by specifying r-base with r-base>=4.1,<4.2, instead of r-base>=4.1

[lgautier]

Updating pandas should solve this. Float64Dtype was added in pandas 1.2.0:
https://pandas.pydata.org/pandas-docs/dev/whatsnew/v1.2.0.html#experimental-nullable-data-types-for-float-data

[lgautier]

Added pandas>=1.2.0 to install targets.