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  • API reference
  • User Guide
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  • Input/output
    • polars.read_csv
    • polars.scan_csv
    • polars.DataFrame.write_csv
    • polars.read_ipc
    • polars.scan_ipc
    • polars.read_ipc_schema
    • polars.DataFrame.write_ipc
    • polars.read_parquet
    • polars.scan_parquet
    • polars.DataFrame.write_parquet
    • polars.read_sql
    • polars.read_json
    • polars.DataFrame.write_json
    • polars.read_avro
    • polars.DataFrame.write_avro
    • polars.scan_ds
  • Functions
    • polars.toggle_string_cache
    • polars.StringCache
    • polars.from_dict
    • polars.from_dicts
    • polars.from_records
    • polars.from_arrow
    • polars.from_pandas
    • polars.get_dummies
    • polars.concat
    • polars.repeat
    • polars.arg_where
    • polars.date_range
    • polars.collect_all
  • Series
    • polars.Series
      • polars.Series.abs
      • polars.Series.alias
      • polars.Series.all
      • polars.Series.any
      • polars.Series.append
      • polars.Series.apply
      • polars.Series.arccos
      • polars.Series.arcsin
      • polars.Series.arctan
      • polars.Series.arg_max
      • polars.Series.arg_min
      • polars.Series.arg_true
      • polars.Series.arg_unique
      • polars.Series.argsort
      • polars.Series.cast
      • polars.Series.ceil
      • polars.Series.chunk_lengths
      • polars.Series.clip
      • polars.Series.clone
      • polars.Series.cos
      • polars.Series.cummax
      • polars.Series.cummin
      • polars.Series.cumprod
      • polars.Series.cumsum
      • polars.Series.cumulative_eval
      • polars.Series.describe
      • polars.Series.diff
      • polars.Series.dot
      • polars.Series.drop_nulls
      • polars.Series.entropy
      • polars.Series.estimated_size
      • polars.Series.ewm_mean
      • polars.Series.ewm_std
      • polars.Series.ewm_var
      • polars.Series.exp
      • polars.Series.explode
      • polars.Series.extend_constant
      • polars.Series.fill_nan
      • polars.Series.fill_null
      • polars.Series.filter
      • polars.Series.floor
      • polars.Series.has_validity
      • polars.Series.hash
      • polars.Series.head
      • polars.Series.interpolate
      • polars.Series.is_boolean
      • polars.Series.is_datelike
      • polars.Series.is_duplicated
      • polars.Series.is_finite
      • polars.Series.is_first
      • polars.Series.is_float
      • polars.Series.is_in
      • polars.Series.is_infinite
      • polars.Series.is_nan
      • polars.Series.is_not_nan
      • polars.Series.is_not_null
      • polars.Series.is_null
      • polars.Series.is_numeric
      • polars.Series.is_unique
      • polars.Series.is_utf8
      • polars.Series.kurtosis
      • polars.Series.len
      • polars.Series.limit
      • polars.Series.log
      • polars.Series.log10
      • polars.Series.max
      • polars.Series.mean
      • polars.Series.median
      • polars.Series.min
      • polars.Series.mode
      • polars.Series.n_chunks
      • polars.Series.n_unique
      • polars.Series.null_count
      • polars.Series.pct_change
      • polars.Series.peak_max
      • polars.Series.peak_min
      • polars.Series.product
      • polars.Series.quantile
      • polars.Series.rank
      • polars.Series.rechunk
      • polars.Series.reinterpret
      • polars.Series.rename
      • polars.Series.reshape
      • polars.Series.rolling_apply
      • polars.Series.rolling_max
      • polars.Series.rolling_mean
      • polars.Series.rolling_median
      • polars.Series.rolling_min
      • polars.Series.rolling_quantile
      • polars.Series.rolling_skew
      • polars.Series.rolling_std
      • polars.Series.rolling_sum
      • polars.Series.rolling_var
      • polars.Series.round
      • polars.Series.sample
      • polars.Series.series_equal
      • polars.Series.set
      • polars.Series.set_at_idx
      • polars.Series.shift
      • polars.Series.shift_and_fill
      • polars.Series.shrink_to_fit
      • polars.Series.shuffle
      • polars.Series.sign
      • polars.Series.sin
      • polars.Series.skew
      • polars.Series.slice
      • polars.Series.sort
      • polars.Series.sqrt
      • polars.Series.std
      • polars.Series.sum
      • polars.Series.tail
      • polars.Series.take
      • polars.Series.take_every
      • polars.Series.tan
      • polars.Series.to_arrow
      • polars.Series.to_dummies
      • polars.Series.to_frame
      • polars.Series.to_list
      • polars.Series.to_numpy
      • polars.Series.to_pandas
      • polars.Series.to_physical
      • polars.Series.unique
      • polars.Series.unique_counts
      • polars.Series.value_counts
      • polars.Series.var
      • polars.Series.view
      • polars.Series.zip_with
    • polars.Series.dtype
    • polars.Series.inner_dtype
    • polars.Series.name
    • polars.Series.shape
    • polars.Series.arr
    • polars.Series.dt
    • polars.Series.str
    • polars.Series.cat
    • polars.Series.time_unit
    • polars.Series.to_frame
    • polars.Series.to_list
    • polars.Series.to_numpy
    • polars.Series.to_arrow
    • polars.Series.to_pandas
    • polars.Series.sum
    • polars.Series.mean
    • polars.Series.min
    • polars.Series.max
    • polars.Series.std
    • polars.Series.var
    • polars.Series.median
    • polars.Series.quantile
    • polars.Series.product
    • polars.Series.mode
    • polars.Series.arg_min
    • polars.Series.arg_max
    • polars.Series.describe
    • polars.Series.estimated_size
    • polars.Series.unique_counts
    • polars.Series.value_counts
    • polars.Series.chunk_lengths
    • polars.Series.n_chunks
    • polars.Series.null_count
    • polars.Series.is_null
    • polars.Series.is_not_null
    • polars.Series.is_finite
    • polars.Series.is_infinite
    • polars.Series.is_nan
    • polars.Series.is_not_nan
    • polars.Series.is_in
    • polars.Series.is_unique
    • polars.Series.is_first
    • polars.Series.is_duplicated
    • polars.Series.is_numeric
    • polars.Series.is_float
    • polars.Series.is_boolean
    • polars.Series.is_utf8
    • polars.Series.is_datelike
    • polars.Series.len
    • polars.Series.n_unique
    • polars.Series.has_validity
    • polars.Series.any
    • polars.Series.all
    • polars.Series.cumsum
    • polars.Series.cummin
    • polars.Series.cummax
    • polars.Series.cumprod
    • polars.Series.cumulative_eval
    • polars.Series.arg_true
    • polars.Series.arg_unique
    • polars.Series.unique
    • polars.Series.rolling_min
    • polars.Series.rolling_max
    • polars.Series.rolling_mean
    • polars.Series.rolling_sum
    • polars.Series.rolling_apply
    • polars.Series.rolling_std
    • polars.Series.rolling_var
    • polars.Series.rolling_median
    • polars.Series.rolling_quantile
    • polars.Series.rolling_skew
    • polars.Series.ewm_mean
    • polars.Series.ewm_std
    • polars.Series.ewm_var
    • polars.Series.hash
    • polars.Series.peak_max
    • polars.Series.peak_min
    • polars.Series.dot
    • polars.Series.abs
    • polars.Series.rank
    • polars.Series.diff
    • polars.Series.pct_change
    • polars.Series.skew
    • polars.Series.kurtosis
    • polars.Series.entropy
    • polars.Series.sqrt
    • polars.Series.sin
    • polars.Series.cos
    • polars.Series.tan
    • polars.Series.arcsin
    • polars.Series.arccos
    • polars.Series.arctan
    • polars.Series.log
    • polars.Series.log10
    • polars.Series.exp
    • polars.Series.sign
    • polars.Series.alias
    • polars.Series.rename
    • polars.Series.limit
    • polars.Series.slice
    • polars.Series.append
    • polars.Series.filter
    • polars.Series.head
    • polars.Series.tail
    • polars.Series.take_every
    • polars.Series.sort
    • polars.Series.argsort
    • polars.Series.take
    • polars.Series.shrink_to_fit
    • polars.Series.explode
    • polars.Series.sample
    • polars.Series.view
    • polars.Series.set
    • polars.Series.clone
    • polars.Series.shift
    • polars.Series.shift_and_fill
    • polars.Series.drop_nulls
    • polars.Series.drop_nans
    • polars.Series.rechunk
    • polars.Series.cast
    • polars.Series.round
    • polars.Series.floor
    • polars.Series.ceil
    • polars.Series.set_at_idx
    • polars.Series.fill_null
    • polars.Series.fill_nan
    • polars.Series.zip_with
    • polars.Series.interpolate
    • polars.Series.clip
    • polars.Series.reshape
    • polars.Series.to_dummies
    • polars.Series.shuffle
    • polars.Series.extend_constant
    • polars.Series.series_equal
    • polars.Series.apply
    • polars.Series.dt
    • polars.Series.str
    • polars.Series.reinterpret
    • polars.Series.to_physical
    • polars.internals.series.DateTimeNameSpace.strftime
    • polars.internals.series.DateTimeNameSpace.year
    • polars.internals.series.DateTimeNameSpace.month
    • polars.internals.series.DateTimeNameSpace.week
    • polars.internals.series.DateTimeNameSpace.weekday
    • polars.internals.series.DateTimeNameSpace.day
    • polars.internals.series.DateTimeNameSpace.ordinal_day
    • polars.internals.series.DateTimeNameSpace.hour
    • polars.internals.series.DateTimeNameSpace.minute
    • polars.internals.series.DateTimeNameSpace.second
    • polars.internals.series.DateTimeNameSpace.nanosecond
    • polars.internals.series.DateTimeNameSpace.timestamp
    • polars.internals.series.DateTimeNameSpace.to_python_datetime
    • polars.internals.series.DateTimeNameSpace.min
    • polars.internals.series.DateTimeNameSpace.max
    • polars.internals.series.DateTimeNameSpace.median
    • polars.internals.series.DateTimeNameSpace.mean
    • polars.internals.series.DateTimeNameSpace.truncate
    • polars.internals.series.DateTimeNameSpace.epoch
    • polars.internals.series.DateTimeNameSpace.epoch_days
    • polars.internals.series.DateTimeNameSpace.epoch_milliseconds
    • polars.internals.series.DateTimeNameSpace.epoch_seconds
    • polars.internals.series.DateTimeNameSpace.and_time_unit
    • polars.internals.series.DateTimeNameSpace.and_time_zone
    • polars.internals.series.DateTimeNameSpace.with_time_unit
    • polars.internals.series.DateTimeNameSpace.cast_time_unit
    • polars.internals.series.DateTimeNameSpace.days
    • polars.internals.series.DateTimeNameSpace.hours
    • polars.internals.series.DateTimeNameSpace.minutes
    • polars.internals.series.DateTimeNameSpace.seconds
    • polars.internals.series.DateTimeNameSpace.milliseconds
    • polars.internals.series.DateTimeNameSpace.nanoseconds
    • polars.internals.series.StringNameSpace.strptime
    • polars.internals.series.StringNameSpace.lengths
    • polars.internals.series.StringNameSpace.concat
    • polars.internals.series.StringNameSpace.contains
    • polars.internals.series.StringNameSpace.json_path_match
    • polars.internals.series.StringNameSpace.extract
    • polars.internals.series.StringNameSpace.split
    • polars.internals.series.StringNameSpace.split_exact
    • polars.internals.series.StringNameSpace.replace
    • polars.internals.series.StringNameSpace.replace_all
    • polars.internals.series.StringNameSpace.to_lowercase
    • polars.internals.series.StringNameSpace.to_uppercase
    • polars.internals.series.StringNameSpace.strip
    • polars.internals.series.StringNameSpace.rstrip
    • polars.internals.series.StringNameSpace.lstrip
    • polars.internals.series.StringNameSpace.slice
    • polars.internals.series.StringNameSpace.encode
    • polars.internals.series.StringNameSpace.decode
    • polars.internals.series.ListNameSpace.concat
    • polars.internals.series.ListNameSpace.lengths
    • polars.internals.series.ListNameSpace.sum
    • polars.internals.series.ListNameSpace.min
    • polars.internals.series.ListNameSpace.max
    • polars.internals.series.ListNameSpace.mean
    • polars.internals.series.ListNameSpace.sort
    • polars.internals.series.ListNameSpace.reverse
    • polars.internals.series.ListNameSpace.unique
    • polars.internals.series.ListNameSpace.get
    • polars.internals.series.ListNameSpace.first
    • polars.internals.series.ListNameSpace.last
    • polars.internals.series.ListNameSpace.contains
    • polars.internals.series.ListNameSpace.join
    • polars.internals.series.ListNameSpace.arg_min
    • polars.internals.series.ListNameSpace.arg_max
    • polars.internals.series.ListNameSpace.diff
    • polars.internals.series.ListNameSpace.shift
    • polars.internals.series.ListNameSpace.slice
    • polars.internals.series.ListNameSpace.head
    • polars.internals.series.ListNameSpace.tail
    • polars.internals.series.ListNameSpace.eval
    • polars.internals.series.CatNameSpace.set_ordering
    • polars.internals.series.StructNameSpace.to_frame
    • polars.internals.series.StructNameSpace.field
    • polars.internals.series.StructNameSpace.fields
    • polars.internals.series.StructNameSpace.rename_fields
  • DataFrame
    • polars.DataFrame
      • polars.DataFrame.apply
      • polars.DataFrame.clone
      • polars.DataFrame.describe
      • polars.DataFrame.distinct
      • polars.DataFrame.drop
      • polars.DataFrame.drop_in_place
      • polars.DataFrame.drop_nulls
      • polars.DataFrame.estimated_size
      • polars.DataFrame.explode
      • polars.DataFrame.extend
      • polars.DataFrame.fill_nan
      • polars.DataFrame.fill_null
      • polars.DataFrame.filter
      • polars.DataFrame.find_idx_by_name
      • polars.DataFrame.fold
      • polars.DataFrame.frame_equal
      • polars.DataFrame.get_column
      • polars.DataFrame.get_columns
      • polars.DataFrame.groupby
      • polars.DataFrame.groupby_dynamic
      • polars.DataFrame.groupby_rolling
      • polars.DataFrame.hash_rows
      • polars.DataFrame.head
      • polars.DataFrame.hstack
      • polars.DataFrame.insert_at_idx
      • polars.DataFrame.interpolate
      • polars.DataFrame.is_duplicated
      • polars.DataFrame.is_empty
      • polars.DataFrame.is_unique
      • polars.DataFrame.join
      • polars.DataFrame.join_asof
      • polars.DataFrame.lazy
      • polars.DataFrame.limit
      • polars.DataFrame.max
      • polars.DataFrame.mean
      • polars.DataFrame.median
      • polars.DataFrame.melt
      • polars.DataFrame.min
      • polars.DataFrame.n_chunks
      • polars.DataFrame.null_count
      • polars.DataFrame.partition_by
      • polars.DataFrame.pipe
      • polars.DataFrame.pivot
      • polars.DataFrame.product
      • polars.DataFrame.quantile
      • polars.DataFrame.rechunk
      • polars.DataFrame.rename
      • polars.DataFrame.replace
      • polars.DataFrame.replace_at_idx
      • polars.DataFrame.row
      • polars.DataFrame.rows
      • polars.DataFrame.sample
      • polars.DataFrame.select
      • polars.DataFrame.select_at_idx
      • polars.DataFrame.shift
      • polars.DataFrame.shift_and_fill
      • polars.DataFrame.shrink_to_fit
      • polars.DataFrame.slice
      • polars.DataFrame.sort
      • polars.DataFrame.std
      • polars.DataFrame.sum
      • polars.DataFrame.tail
      • polars.DataFrame.to_arrow
      • polars.DataFrame.to_avro
      • polars.DataFrame.to_csv
      • polars.DataFrame.to_dict
      • polars.DataFrame.to_dicts
      • polars.DataFrame.to_dummies
      • polars.DataFrame.to_ipc
      • polars.DataFrame.to_json
      • polars.DataFrame.to_numpy
      • polars.DataFrame.to_pandas
      • polars.DataFrame.to_parquet
      • polars.DataFrame.to_series
      • polars.DataFrame.to_struct
      • polars.DataFrame.transpose
      • polars.DataFrame.unique
      • polars.DataFrame.unnest
      • polars.DataFrame.upsample
      • polars.DataFrame.var
      • polars.DataFrame.vstack
      • polars.DataFrame.with_column
      • polars.DataFrame.with_columns
      • polars.DataFrame.with_row_count
      • polars.DataFrame.write_avro
      • polars.DataFrame.write_csv
      • polars.DataFrame.write_ipc
      • polars.DataFrame.write_json
      • polars.DataFrame.write_parquet
    • polars.DataFrame.shape
    • polars.DataFrame.height
    • polars.DataFrame.width
    • polars.DataFrame.columns
    • polars.DataFrame.dtypes
    • polars.DataFrame.schema
    • polars.DataFrame.to_arrow
    • polars.DataFrame.to_avro
    • polars.DataFrame.to_json
    • polars.DataFrame.to_pandas
    • polars.DataFrame.to_csv
    • polars.DataFrame.to_ipc
    • polars.DataFrame.to_parquet
    • polars.DataFrame.to_numpy
    • polars.DataFrame.to_dict
    • polars.DataFrame.to_dicts
    • polars.DataFrame.to_struct
    • polars.DataFrame.max
    • polars.DataFrame.min
    • polars.DataFrame.sum
    • polars.DataFrame.mean
    • polars.DataFrame.std
    • polars.DataFrame.var
    • polars.DataFrame.median
    • polars.DataFrame.quantile
    • polars.DataFrame.product
    • polars.DataFrame.describe
    • polars.DataFrame.estimated_size
    • polars.DataFrame.is_duplicated
    • polars.DataFrame.is_unique
    • polars.DataFrame.n_chunks
    • polars.DataFrame.null_count
    • polars.DataFrame.is_empty
    • polars.DataFrame.hash_rows
    • polars.DataFrame.fold
    • polars.DataFrame.rename
    • polars.DataFrame.with_row_count
    • polars.DataFrame.insert_at_idx
    • polars.DataFrame.filter
    • polars.DataFrame.find_idx_by_name
    • polars.DataFrame.select_at_idx
    • polars.DataFrame.replace_at_idx
    • polars.DataFrame.sort
    • polars.DataFrame.replace
    • polars.DataFrame.slice
    • polars.DataFrame.limit
    • polars.DataFrame.head
    • polars.DataFrame.tail
    • polars.DataFrame.drop_nulls
    • polars.DataFrame.drop
    • polars.DataFrame.drop_in_place
    • polars.DataFrame.to_series
    • polars.DataFrame.clone
    • polars.DataFrame.get_columns
    • polars.DataFrame.get_column
    • polars.DataFrame.fill_null
    • polars.DataFrame.fill_nan
    • polars.DataFrame.explode
    • polars.DataFrame.pivot
    • polars.DataFrame.melt
    • polars.DataFrame.shift
    • polars.DataFrame.shift_and_fill
    • polars.DataFrame.with_column
    • polars.DataFrame.hstack
    • polars.DataFrame.vstack
    • polars.DataFrame.extend
    • polars.DataFrame.groupby
    • polars.DataFrame.groupby_dynamic
    • polars.DataFrame.groupby_rolling
    • polars.DataFrame.select
    • polars.DataFrame.with_columns
    • polars.DataFrame.sample
    • polars.DataFrame.row
    • polars.DataFrame.rows
    • polars.DataFrame.to_dummies
    • polars.DataFrame.distinct
    • polars.DataFrame.unique
    • polars.DataFrame.shrink_to_fit
    • polars.DataFrame.rechunk
    • polars.DataFrame.pipe
    • polars.DataFrame.join
    • polars.DataFrame.join_asof
    • polars.DataFrame.interpolate
    • polars.DataFrame.transpose
    • polars.DataFrame.partition_by
    • polars.DataFrame.upsample
    • polars.DataFrame.unnest
    • polars.DataFrame.apply
    • polars.DataFrame.frame_equal
    • polars.DataFrame.lazy
    • polars.internals.frame.GroupBy.agg
    • polars.internals.frame.GroupBy.apply
    • polars.internals.frame.GroupBy.head
    • polars.internals.frame.GroupBy.tail
    • polars.internals.frame.GroupBy.get_group
    • polars.internals.frame.GroupBy.groups
    • polars.internals.frame.GroupBy.pivot
    • polars.internals.frame.GroupBy.first
    • polars.internals.frame.GroupBy.last
    • polars.internals.frame.GroupBy.sum
    • polars.internals.frame.GroupBy.min
    • polars.internals.frame.GroupBy.max
    • polars.internals.frame.GroupBy.count
    • polars.internals.frame.GroupBy.mean
    • polars.internals.frame.GroupBy.n_unique
    • polars.internals.frame.GroupBy.quantile
    • polars.internals.frame.GroupBy.median
    • polars.internals.frame.GroupBy.agg_list
    • polars.internals.frame.PivotOps.first
    • polars.internals.frame.PivotOps.last
    • polars.internals.frame.PivotOps.sum
    • polars.internals.frame.PivotOps.min
    • polars.internals.frame.PivotOps.max
    • polars.internals.frame.PivotOps.mean
    • polars.internals.frame.PivotOps.count
    • polars.internals.frame.PivotOps.median
  • Expressions
    • polars.select
    • polars.col
    • polars.count
    • polars.list
    • polars.std
    • polars.var
    • polars.max
    • polars.min
    • polars.sum
    • polars.mean
    • polars.avg
    • polars.median
    • polars.n_unique
    • polars.first
    • polars.last
    • polars.head
    • polars.tail
    • polars.lit
    • polars.pearson_corr
    • polars.spearman_rank_corr
    • polars.cov
    • polars.map
    • polars.apply
    • polars.fold
    • polars.any
    • polars.all
    • polars.groups
    • polars.quantile
    • polars.arange
    • polars.repeat
    • polars.argsort_by
    • polars.concat_str
    • polars.concat_list
    • polars.format
    • polars.when
    • polars.exclude
    • polars.datetime
    • polars.duration
    • polars.date
    • polars.struct
    • polars.Expr
      • polars.Expr.abs
      • polars.Expr.agg_groups
      • polars.Expr.alias
      • polars.Expr.all
      • polars.Expr.any
      • polars.Expr.apply
      • polars.Expr.arccos
      • polars.Expr.arcsin
      • polars.Expr.arctan
      • polars.Expr.arg_max
      • polars.Expr.arg_min
      • polars.Expr.arg_sort
      • polars.Expr.arg_unique
      • polars.Expr.argsort
      • polars.Expr.backward_fill
      • polars.Expr.cast
      • polars.Expr.ceil
      • polars.Expr.clip
      • polars.Expr.cos
      • polars.Expr.count
      • polars.Expr.cumcount
      • polars.Expr.cummax
      • polars.Expr.cummin
      • polars.Expr.cumprod
      • polars.Expr.cumsum
      • polars.Expr.cumulative_eval
      • polars.Expr.diff
      • polars.Expr.dot
      • polars.Expr.drop_nans
      • polars.Expr.drop_nulls
      • polars.Expr.entropy
      • polars.Expr.ewm_mean
      • polars.Expr.ewm_std
      • polars.Expr.ewm_var
      • polars.Expr.exclude
      • polars.Expr.exp
      • polars.Expr.explode
      • polars.Expr.extend_constant
      • polars.Expr.fill_nan
      • polars.Expr.fill_null
      • polars.Expr.filter
      • polars.Expr.first
      • polars.Expr.flatten
      • polars.Expr.floor
      • polars.Expr.forward_fill
      • polars.Expr.hash
      • polars.Expr.head
      • polars.Expr.inspect
      • polars.Expr.interpolate
      • polars.Expr.is_between
      • polars.Expr.is_duplicated
      • polars.Expr.is_finite
      • polars.Expr.is_first
      • polars.Expr.is_in
      • polars.Expr.is_infinite
      • polars.Expr.is_nan
      • polars.Expr.is_not
      • polars.Expr.is_not_nan
      • polars.Expr.is_not_null
      • polars.Expr.is_null
      • polars.Expr.is_unique
      • polars.Expr.keep_name
      • polars.Expr.kurtosis
      • polars.Expr.last
      • polars.Expr.len
      • polars.Expr.list
      • polars.Expr.log
      • polars.Expr.log10
      • polars.Expr.lower_bound
      • polars.Expr.map
      • polars.Expr.map_alias
      • polars.Expr.max
      • polars.Expr.mean
      • polars.Expr.median
      • polars.Expr.min
      • polars.Expr.mode
      • polars.Expr.n_unique
      • polars.Expr.null_count
      • polars.Expr.over
      • polars.Expr.pct_change
      • polars.Expr.pow
      • polars.Expr.prefix
      • polars.Expr.product
      • polars.Expr.quantile
      • polars.Expr.rank
      • polars.Expr.reinterpret
      • polars.Expr.repeat_by
      • polars.Expr.reshape
      • polars.Expr.reverse
      • polars.Expr.rolling_apply
      • polars.Expr.rolling_max
      • polars.Expr.rolling_mean
      • polars.Expr.rolling_median
      • polars.Expr.rolling_min
      • polars.Expr.rolling_quantile
      • polars.Expr.rolling_skew
      • polars.Expr.rolling_std
      • polars.Expr.rolling_sum
      • polars.Expr.rolling_var
      • polars.Expr.round
      • polars.Expr.sample
      • polars.Expr.shift
      • polars.Expr.shift_and_fill
      • polars.Expr.shuffle
      • polars.Expr.sign
      • polars.Expr.sin
      • polars.Expr.skew
      • polars.Expr.slice
      • polars.Expr.sort
      • polars.Expr.sort_by
      • polars.Expr.sqrt
      • polars.Expr.std
      • polars.Expr.suffix
      • polars.Expr.sum
      • polars.Expr.tail
      • polars.Expr.take
      • polars.Expr.take_every
      • polars.Expr.tan
      • polars.Expr.to_physical
      • polars.Expr.unique
      • polars.Expr.unique_counts
      • polars.Expr.upper_bound
      • polars.Expr.value_counts
      • polars.Expr.var
      • polars.Expr.where
    • polars.Expr.arr
    • polars.Expr.dt
    • polars.Expr.str
    • polars.Expr.cat
    • polars.Expr.std
    • polars.Expr.var
    • polars.Expr.max
    • polars.Expr.min
    • polars.Expr.sum
    • polars.Expr.mean
    • polars.Expr.mean
    • polars.Expr.median
    • polars.Expr.first
    • polars.Expr.last
    • polars.Expr.product
    • polars.Expr.list
    • polars.Expr.agg_groups
    • polars.Expr.count
    • polars.Expr.len
    • polars.Expr.quantile
    • polars.Expr.arg_min
    • polars.Expr.arg_max
    • polars.Expr.is_not
    • polars.Expr.is_null
    • polars.Expr.is_not_null
    • polars.Expr.is_finite
    • polars.Expr.is_infinite
    • polars.Expr.is_nan
    • polars.Expr.is_not_nan
    • polars.Expr.is_unique
    • polars.Expr.is_first
    • polars.Expr.is_duplicated
    • polars.Expr.is_between
    • polars.Expr.is_in
    • polars.Expr.any
    • polars.Expr.all
    • polars.Expr.cumsum
    • polars.Expr.cummin
    • polars.Expr.cummax
    • polars.Expr.cumprod
    • polars.Expr.cumcount
    • polars.Expr.cumulative_eval
    • polars.Expr.dot
    • polars.Expr.mode
    • polars.Expr.n_unique
    • polars.Expr.arg_unique
    • polars.Expr.unique
    • polars.Expr.pow
    • polars.Expr.rolling_min
    • polars.Expr.rolling_max
    • polars.Expr.rolling_mean
    • polars.Expr.rolling_sum
    • polars.Expr.rolling_apply
    • polars.Expr.rolling_std
    • polars.Expr.rolling_var
    • polars.Expr.rolling_median
    • polars.Expr.rolling_quantile
    • polars.Expr.rolling_skew
    • polars.Expr.ewm_mean
    • polars.Expr.ewm_std
    • polars.Expr.ewm_var
    • polars.Expr.hash
    • polars.Expr.abs
    • polars.Expr.rank
    • polars.Expr.diff
    • polars.Expr.pct_change
    • polars.Expr.skew
    • polars.Expr.kurtosis
    • polars.Expr.entropy
    • polars.Expr.sqrt
    • polars.Expr.sin
    • polars.Expr.cos
    • polars.Expr.tan
    • polars.Expr.arcsin
    • polars.Expr.arccos
    • polars.Expr.arctan
    • polars.Expr.log
    • polars.Expr.log10
    • polars.Expr.exp
    • polars.Expr.sign
    • polars.Expr.unique_counts
    • polars.Expr.value_counts
    • polars.Expr.null_count
    • polars.Expr.inspect
    • polars.Expr.slice
    • polars.Expr.explode
    • polars.Expr.flatten
    • polars.Expr.take_every
    • polars.Expr.repeat_by
    • polars.Expr.round
    • polars.Expr.floor
    • polars.Expr.ceil
    • polars.Expr.cast
    • polars.Expr.sort
    • polars.Expr.arg_sort
    • polars.Expr.argsort
    • polars.Expr.sort_by
    • polars.Expr.take
    • polars.Expr.shift
    • polars.Expr.shift_and_fill
    • polars.Expr.fill_null
    • polars.Expr.fill_nan
    • polars.Expr.forward_fill
    • polars.Expr.backward_fill
    • polars.Expr.reverse
    • polars.Expr.filter
    • polars.Expr.where
    • polars.Expr.head
    • polars.Expr.tail
    • polars.Expr.reinterpret
    • polars.Expr.drop_nulls
    • polars.Expr.drop_nans
    • polars.Expr.interpolate
    • polars.Expr.arg_sort
    • polars.Expr.clip
    • polars.Expr.lower_bound
    • polars.Expr.upper_bound
    • polars.Expr.reshape
    • polars.Expr.to_physical
    • polars.Expr.shuffle
    • polars.Expr.sample
    • polars.Expr.extend_constant
    • polars.Expr.alias
    • polars.Expr.keep_name
    • polars.Expr.prefix
    • polars.Expr.suffix
    • polars.Expr.map_alias
    • polars.Expr.exclude
    • polars.Expr.map
    • polars.Expr.apply
    • polars.Expr.over
    • polars.internals.expr.ExprDateTimeNameSpace.strftime
    • polars.internals.expr.ExprDateTimeNameSpace.year
    • polars.internals.expr.ExprDateTimeNameSpace.month
    • polars.internals.expr.ExprDateTimeNameSpace.week
    • polars.internals.expr.ExprDateTimeNameSpace.weekday
    • polars.internals.expr.ExprDateTimeNameSpace.day
    • polars.internals.expr.ExprDateTimeNameSpace.ordinal_day
    • polars.internals.expr.ExprDateTimeNameSpace.hour
    • polars.internals.expr.ExprDateTimeNameSpace.minute
    • polars.internals.expr.ExprDateTimeNameSpace.second
    • polars.internals.expr.ExprDateTimeNameSpace.nanosecond
    • polars.internals.expr.ExprDateTimeNameSpace.to_python_datetime
    • polars.internals.expr.ExprDateTimeNameSpace.timestamp
    • polars.internals.expr.ExprDateTimeNameSpace.truncate
    • polars.internals.expr.ExprDateTimeNameSpace.epoch
    • polars.internals.expr.ExprDateTimeNameSpace.epoch_days
    • polars.internals.expr.ExprDateTimeNameSpace.epoch_milliseconds
    • polars.internals.expr.ExprDateTimeNameSpace.epoch_seconds
    • polars.internals.expr.ExprDateTimeNameSpace.and_time_unit
    • polars.internals.expr.ExprDateTimeNameSpace.and_time_zone
    • polars.internals.expr.ExprDateTimeNameSpace.with_time_unit
    • polars.internals.expr.ExprDateTimeNameSpace.cast_time_unit
    • polars.internals.expr.ExprDateTimeNameSpace.days
    • polars.internals.expr.ExprDateTimeNameSpace.hours
    • polars.internals.expr.ExprDateTimeNameSpace.minutes
    • polars.internals.expr.ExprDateTimeNameSpace.seconds
    • polars.internals.expr.ExprDateTimeNameSpace.milliseconds
    • polars.internals.expr.ExprDateTimeNameSpace.nanoseconds
    • polars.internals.expr.ExprStringNameSpace.strptime
    • polars.internals.expr.ExprStringNameSpace.lengths
    • polars.internals.expr.ExprStringNameSpace.to_uppercase
    • polars.internals.expr.ExprStringNameSpace.to_lowercase
    • polars.internals.expr.ExprStringNameSpace.concat
    • polars.internals.expr.ExprStringNameSpace.strip
    • polars.internals.expr.ExprStringNameSpace.lstrip
    • polars.internals.expr.ExprStringNameSpace.rstrip
    • polars.internals.expr.ExprStringNameSpace.contains
    • polars.internals.expr.ExprStringNameSpace.json_path_match
    • polars.internals.expr.ExprStringNameSpace.extract
    • polars.internals.expr.ExprStringNameSpace.split
    • polars.internals.expr.ExprStringNameSpace.split_exact
    • polars.internals.expr.ExprStringNameSpace.replace
    • polars.internals.expr.ExprStringNameSpace.replace_all
    • polars.internals.expr.ExprStringNameSpace.slice
    • polars.internals.expr.ExprStringNameSpace.encode
    • polars.internals.expr.ExprStringNameSpace.decode
    • polars.internals.expr.ExprListNameSpace.concat
    • polars.internals.expr.ExprListNameSpace.lengths
    • polars.internals.expr.ExprListNameSpace.sum
    • polars.internals.expr.ExprListNameSpace.min
    • polars.internals.expr.ExprListNameSpace.max
    • polars.internals.expr.ExprListNameSpace.mean
    • polars.internals.expr.ExprListNameSpace.sort
    • polars.internals.expr.ExprListNameSpace.reverse
    • polars.internals.expr.ExprListNameSpace.unique
    • polars.internals.expr.ExprListNameSpace.get
    • polars.internals.expr.ExprListNameSpace.first
    • polars.internals.expr.ExprListNameSpace.last
    • polars.internals.expr.ExprListNameSpace.contains
    • polars.internals.expr.ExprListNameSpace.join
    • polars.internals.expr.ExprListNameSpace.arg_min
    • polars.internals.expr.ExprListNameSpace.arg_max
    • polars.internals.expr.ExprListNameSpace.diff
    • polars.internals.expr.ExprListNameSpace.shift
    • polars.internals.expr.ExprListNameSpace.slice
    • polars.internals.expr.ExprListNameSpace.head
    • polars.internals.expr.ExprListNameSpace.tail
    • polars.internals.expr.ExprListNameSpace.to_struct
    • polars.internals.expr.ExprListNameSpace.eval
    • polars.internals.expr.ExprCatNameSpace.set_ordering
    • polars.internals.expr.ExprStructNameSpace.field
    • polars.internals.expr.ExprStructNameSpace.rename_fields
  • LazyFrame
    • polars.LazyFrame.columns
    • polars.LazyFrame.dtypes
    • polars.LazyFrame.schema
    • polars.LazyFrame.std
    • polars.LazyFrame.var
    • polars.LazyFrame.max
    • polars.LazyFrame.min
    • polars.LazyFrame.sum
    • polars.LazyFrame.mean
    • polars.LazyFrame.median
    • polars.LazyFrame.quantile
    • polars.LazyFrame.describe_plan
    • polars.LazyFrame.describe_optimized_plan
    • polars.LazyFrame.show_graph
    • polars.LazyFrame.with_row_count
    • polars.LazyFrame.inspect
    • polars.LazyFrame.filter
    • polars.LazyFrame.select
    • polars.LazyFrame.groupby
    • polars.LazyFrame.groupby_dynamic
    • polars.LazyFrame.groupby_rolling
    • polars.LazyFrame.join
    • polars.DataFrame.join_asof
    • polars.LazyFrame.with_columns
    • polars.LazyFrame.with_column
    • polars.LazyFrame.drop
    • polars.LazyFrame.rename
    • polars.LazyFrame.reverse
    • polars.LazyFrame.shift
    • polars.LazyFrame.shift_and_fill
    • polars.LazyFrame.slice
    • polars.LazyFrame.limit
    • polars.LazyFrame.head
    • polars.LazyFrame.tail
    • polars.LazyFrame.last
    • polars.LazyFrame.first
    • polars.LazyFrame.fill_null
    • polars.LazyFrame.fill_nan
    • polars.LazyFrame.explode
    • polars.LazyFrame.distinct
    • polars.LazyFrame.unique
    • polars.LazyFrame.drop_nulls
    • polars.LazyFrame.sort
    • polars.LazyFrame.melt
    • polars.LazyFrame.interpolate
    • polars.LazyFrame.unnest
    • polars.LazyFrame.write_json
    • polars.LazyFrame.read_json
    • polars.LazyFrame.from_json
    • polars.LazyFrame.map
    • polars.LazyFrame.pipe
    • polars.LazyFrame.collect
    • polars.LazyFrame.fetch
    • polars.LazyFrame.cache
    • polars.internals.lazy_frame.LazyGroupBy.agg
    • polars.internals.lazy_frame.LazyGroupBy.apply
    • polars.internals.lazy_frame.LazyGroupBy.head
    • polars.internals.lazy_frame.LazyGroupBy.tail
  • Testing
    • polars.testing.assert_series_equal
    • polars.testing.assert_frame_equal
  • Config
    • polars.Config.set_utf8_tables
    • polars.Config.set_ascii_tables
    • polars.Config.set_tbl_width_chars
    • polars.Config.set_tbl_rows
    • polars.Config.set_tbl_cols
    • polars.Config.set_global_string_cache
    • polars.Config.unset_global_string_cache
    • polars.toggle_string_cache
    • polars.StringCache

API referenceΒΆ

This page gives an overview of all public polars objects, functions and methods. All classes and functions exposed in polars.* namespace are public.

  • Input/output
    • CSV
    • Feather/ IPC
    • Parquet
    • SQL
    • JSON
    • AVRO
    • Datasets
  • Functions
    • Config
    • Conversion
    • Eager functions
    • Parallelization
  • Series
    • Constructor
    • Attributes
    • Conversion
    • Aggregation
    • Descriptive stats
    • Boolean
    • Computations
    • Manipulation/ selection
    • Various
    • TimeSeries
    • Strings
    • Lists
    • Categories
    • Struct
  • DataFrame
    • Constructor
    • Attributes
    • Conversion
    • Aggregation
    • Descriptive stats
    • Computations
    • Manipulation/ selection
    • Apply
    • Various
    • GroupBy
    • Pivot
  • Expressions
    • Functions
    • Constructor
    • Attributes
    • Aggregation
    • Boolean
    • Computations
    • Manipulation/ selection
    • Column names
    • Apply
    • Window
    • TimeSeries
    • Strings
    • Lists
    • Categories
    • Struct
  • LazyFrame
    • Attributes
    • Aggregation
    • Descriptive stats
    • Manipulation/ selection
    • Conversion
    • Apply
    • Various
    • GroupBy
  • Testing
    • polars.testing.assert_series_equal
    • polars.testing.assert_frame_equal
  • Config
    • polars.Config.set_utf8_tables
    • polars.Config.set_ascii_tables
    • polars.Config.set_tbl_width_chars
    • polars.Config.set_tbl_rows
    • polars.Config.set_tbl_cols
    • polars.Config.set_global_string_cache
    • polars.Config.unset_global_string_cache
    • polars.toggle_string_cache
    • polars.StringCache
<no title> Input/output

© Copyright 2021, Ritchie Vink.

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