polars-upgrade 0.1.7

Automatically upgrade Polars code to the latest version.

polars-upgrade

Automatically upgrade your Polars code so it's compatible with future versions.

Installation

pip install -U polars-upgrade

Usage

Suppose you have a codebase which works with, say, Polars 0.18.4. You'd like to upgrade it to the latest syntax, so that you're no longer using deprecated method names.

All you need to do is:

polars-upgrade my_project --target-version=0.18.4

and polars-upgrade will automatically upgrade all Python files in my_project to use the newer Polars syntax.

Supported rewrites

Version 0.18.12+

- pl.avg
+ pl.mean

Version 0.19.0+

- df.groupby_dynamic
+ df.group_by_dynamic
- df.groupby_rolling
+ df.rolling
- df.rolling('ts', period='3d').apply
+ df.rolling('ts', period='3d').map_groups
- pl.col('a').rolling_apply
+ pl.col('a').rolling_map
- pl.col('a').apply
+ pl.col('a').map_elements
- pl.col('a').map
+ pl.col('a').map_batches
- pl.map
+ pl.map_batches
- pl.apply
+ pl.map_groups

Version 0.19.2+

- pl.col('a').is_not
+ pl.col('a').not_

Version 0.19.3+

- pl.enable_string_cache(True)
+ pl.enable_string_cache()
- pl.enable_string_cache(False)
+ pl.disable_string_cache()
- pl.col('a').list.count_match
+ pl.col('a').list.count_matches
- pl.col('a').is_last
+ pl.col('a').is_last_distinct
- pl.col('a').is_first
+ pl.col('a').is_first_distinct
- pl.col('a').str.strip
+ pl.col('a').str.strip_chars
- pl.col('a').str.lstrip
+ pl.col('a').str.strip_chars_start
- pl.col('a').str.rstrip
+ pl.col('a').str.strip_chars_end
- pl.col('a').str.count_match
+ pl.col('a').str.count_matches

Version 0.19.4+

- df.group_by_dynamic('ts', every='3d', truncate=True)
+ df.group_by_dynamic('ts', every='3d', label='left')
- df.group_by_dynamic('ts', every='3d', truncate=False)
+ df.group_by_dynamic('ts', every='3d', label='datapoint')

Version 0.19.8+

- pl.col('a').list.lengths
+ pl.col('a').list.len
- pl.col('a').str.lengths
+ pl.col('a').str.len_bytes
- pl.col('a').str.n_chars
+ pl.col('a').str.len_chars

Version 0.19.12+

- pl.col('a').keep_name
+ pl.col('a').name.keep
- pl.col('a').suffix
+ pl.col('a').name.suffix
- pl.col('a').prefix
+ pl.col('a').name.prefix
- pl.col('a').map_alias
+ pl.col('a').name.map
- pl.col('a').str.ljust
+ pl.col('a').str.pad_end
- pl.col('a').str.rjust
+ pl.col('a').str.pad_start

Version 0.19.13

- pl.col('a').dt.milliseconds
+ pl.col('a').dt.total_milliseconds
- pl.col('a').dt.microseconds
+ pl.col('a').dt.total_microseconds
- pl.col('a').dt.nanoseconds
+ pl.col('a').dt.total_nanoseconds

(and so on for other units)

Version 0.19.14

- pl.col('a').list.take
+ pl.col('a').list.gather
- pl.col('a').cumcount
+ pl.col('a').cum_count
- pl.col('a').cummax
+ pl.col('a').cum_max
- pl.col('a').cummin
+ pl.col('a').cum_min
- pl.col('a').cumprod
+ pl.col('a').cum_prod
- pl.col('a').cumsum
+ pl.col('a').cum_sum
- pl.col('a').cumcount
+ pl.col('a').cum_count
- pl.col('a').take
+ pl.col('a').gather
- pl.col('a').take_every
+ pl.col('a').gather_every
- pl.cumsum
+ pl.cum_sum
- pl.cumfold
+ pl.cum_fold
- pl.cumreduce
+ pl.cum_reduce
- pl.cumsum_horizontal
+ pl.cum_sum_horizontal

Version 0.19.15+

- pl.col('a').str.json_extract
+ pl.col('a').str.json_decode

Version 0.19.16

- pl.col('a').map_dict({'a': 'b'})
+ pl.col('a').replace({'a': 'b'}, default=None)
- pl.col('a').map_dict({'a': 'b'}, default='c')
+ pl.col('a').replace({'a': 'b'}, default='c')

Notes

This work is derivative of pyupgrade - many parts have been lifted verbatim. As required, I've included pyupgrade's license.