Series

Constructor

Series([data, index, dtype, name, copy, ...])

One-dimensional ndarray with axis labels (including time series).

Attributes

Axes

Series.index	The index (axis labels) of the Series.
Series.array	The ExtensionArray of the data backing this Series or Index.
Series.values	Return Series as ndarray or ndarray-like depending on the dtype.
Series.dtype	Return the dtype object of the underlying data.
Series.shape	Return a tuple of the shape of the underlying data.
Series.nbytes	Return the number of bytes in the underlying data.
Series.ndim	Number of dimensions of the underlying data, by definition 1.
Series.size	Return the number of elements in the underlying data.
Series.T	Return the transpose, which is by definition self.
Series.memory_usage([index, deep])	Return the memory usage of the Series.
Series.hasnans	Return True if there are any NaNs.
Series.empty	Indicator whether Series/DataFrame is empty.
Series.dtypes	Return the dtype object of the underlying data.
Series.name	Return the name of the Series.
Series.flags	Get the properties associated with this pandas object.
Series.set_flags(*[, copy, ...])	Return a new object with updated flags.

Conversion

Series.astype(dtype[, copy, errors])	Cast a pandas object to a specified dtype dtype.
Series.convert_dtypes([infer_objects, ...])	Convert columns to the best possible dtypes using dtypes supporting pd.NA.
Series.infer_objects([copy])	Attempt to infer better dtypes for object columns.
Series.copy([deep])	Make a copy of this object's indices and data.
Series.bool()	(DEPRECATED) Return the bool of a single element Series or DataFrame.
Series.to_numpy([dtype, copy, na_value])	A NumPy ndarray representing the values in this Series or Index.
Series.to_period([freq, copy])	Convert Series from DatetimeIndex to PeriodIndex.
Series.to_timestamp([freq, how, copy])	Cast to DatetimeIndex of Timestamps, at beginning of period.
Series.to_list()	Return a list of the values.
Series.__array__([dtype, copy])	Return the values as a NumPy array.

Indexing, iteration

Series.get(key[, default])	Get item from object for given key (ex: DataFrame column).
Series.at	Access a single value for a row/column label pair.
Series.iat	Access a single value for a row/column pair by integer position.
Series.loc	Access a group of rows and columns by label(s) or a boolean array.
Series.iloc	(DEPRECATED) Purely integer-location based indexing for selection by position.
Series.__iter__()	Return an iterator of the values.
Series.items()	Lazily iterate over (index, value) tuples.
Series.keys()	Return alias for index.
Series.pop(item)	Return item and drops from series.
Series.item()	Return the first element of the underlying data as a Python scalar.
Series.xs(key[, axis, level, drop_level])	Return cross-section from the Series/DataFrame.

For more information on .at, .iat, .loc, and .iloc, see the indexing documentation.

Binary operator functions

Series.add(other[, level, fill_value, axis])	Return Addition of series and other, element-wise (binary operator add).
Series.sub(other[, level, fill_value, axis])	Return Subtraction of series and other, element-wise (binary operator sub).
Series.mul(other[, level, fill_value, axis])	Return Multiplication of series and other, element-wise (binary operator mul).
Series.div(other[, level, fill_value, axis])	Return Floating division of series and other, element-wise (binary operator truediv).
Series.truediv(other[, level, fill_value, axis])	Return Floating division of series and other, element-wise (binary operator truediv).
Series.floordiv(other[, level, fill_value, axis])	Return Integer division of series and other, element-wise (binary operator floordiv).
Series.mod(other[, level, fill_value, axis])	Return Modulo of series and other, element-wise (binary operator mod).
Series.pow(other[, level, fill_value, axis])	Return Exponential power of series and other, element-wise (binary operator pow).
Series.radd(other[, level, fill_value, axis])	Return Addition of series and other, element-wise (binary operator radd).
Series.rsub(other[, level, fill_value, axis])	Return Subtraction of series and other, element-wise (binary operator rsub).
Series.rmul(other[, level, fill_value, axis])	Return Multiplication of series and other, element-wise (binary operator rmul).
Series.rdiv(other[, level, fill_value, axis])	Return Floating division of series and other, element-wise (binary operator rtruediv).
Series.rtruediv(other[, level, fill_value, axis])	Return Floating division of series and other, element-wise (binary operator rtruediv).
Series.rfloordiv(other[, level, fill_value, ...])	Return Integer division of series and other, element-wise (binary operator rfloordiv).
Series.rmod(other[, level, fill_value, axis])	Return Modulo of series and other, element-wise (binary operator rmod).
Series.rpow(other[, level, fill_value, axis])	Return Exponential power of series and other, element-wise (binary operator rpow).
Series.combine(other, func[, fill_value])	Combine the Series with a Series or scalar according to func.
Series.combine_first(other)	Update null elements with value in the same location in 'other'.
Series.round([decimals])	Round each value in a Series to the given number of decimals.
Series.lt(other[, level, fill_value, axis])	Return Less than of series and other, element-wise (binary operator lt).
Series.gt(other[, level, fill_value, axis])	Return Greater than of series and other, element-wise (binary operator gt).
Series.le(other[, level, fill_value, axis])	Return Less than or equal to of series and other, element-wise (binary operator le).
Series.ge(other[, level, fill_value, axis])	Return Greater than or equal to of series and other, element-wise (binary operator ge).
Series.ne(other[, level, fill_value, axis])	Return Not equal to of series and other, element-wise (binary operator ne).
Series.eq(other[, level, fill_value, axis])	Return Equal to of series and other, element-wise (binary operator eq).
Series.product([axis, skipna, numeric_only, ...])	Return the product of the values over the requested axis.
Series.dot(other)	Compute the dot product between the Series and the columns of other.

Function application, GroupBy & window

Series.apply(func[, convert_dtype, args, by_row])	Invoke function on values of Series.
Series.agg([func, axis])	Aggregate using one or more operations over the specified axis.
Series.aggregate([func, axis])	Aggregate using one or more operations over the specified axis.
Series.transform(func[, axis])	Call func on self producing a Series with the same axis shape as self.
Series.map(arg[, na_action])	Map values of Series according to an input mapping or function.
Series.groupby([by, axis, level, as_index, ...])	Group Series using a mapper or by a Series of columns.
Series.rolling(window[, min_periods, ...])	Provide rolling window calculations.
Series.expanding([min_periods, axis, method])	Provide expanding window calculations.
Series.ewm([com, span, halflife, alpha, ...])	Provide exponentially weighted (EW) calculations.
Series.pipe(func, *args, **kwargs)	Apply chainable functions that expect Series or DataFrames.

Computations / descriptive stats

Series.abs()	Return a Series/DataFrame with absolute numeric value of each element.
Series.all([axis, bool_only, skipna])	Return whether all elements are True, potentially over an axis.
Series.any(*[, axis, bool_only, skipna])	Return whether any element is True, potentially over an axis.
Series.autocorr([lag])	Compute the lag-N autocorrelation.
Series.between(left, right[, inclusive])	Return boolean Series equivalent to left <= series <= right.
Series.clip([lower, upper, axis, inplace])	Trim values at input threshold(s).
Series.corr(other[, method, min_periods])	Compute correlation with other Series, excluding missing values.
Series.count()	Return number of non-NA/null observations in the Series.
Series.cov(other[, min_periods, ddof])	Compute covariance with Series, excluding missing values.
Series.cummax([axis, skipna])	Return cumulative maximum over a DataFrame or Series axis.
Series.cummin([axis, skipna])	Return cumulative minimum over a DataFrame or Series axis.
Series.cumprod([axis, skipna])	Return cumulative product over a DataFrame or Series axis.
Series.cumsum([axis, skipna])	Return cumulative sum over a DataFrame or Series axis.
Series.describe([percentiles, include, exclude])	Generate descriptive statistics.
Series.diff([periods])	First discrete difference of element.
Series.factorize([sort, use_na_sentinel])	Encode the object as an enumerated type or categorical variable.
Series.kurt([axis, skipna, numeric_only])	Return unbiased kurtosis over requested axis.
Series.max([axis, skipna, numeric_only])	Return the maximum of the values over the requested axis.
Series.mean([axis, skipna, numeric_only])	Return the mean of the values over the requested axis.
Series.median([axis, skipna, numeric_only])	Return the median of the values over the requested axis.
Series.min([axis, skipna, numeric_only])	Return the minimum of the values over the requested axis.
Series.mode([dropna])	Return the mode(s) of the Series.
Series.nlargest([n, keep])	Return the largest n elements.
Series.nsmallest([n, keep])	Return the smallest n elements.
Series.pct_change([periods, fill_method, ...])	Fractional change between the current and a prior element.
Series.prod([axis, skipna, numeric_only, ...])	Return the product of the values over the requested axis.
Series.quantile([q, interpolation])	Return value at the given quantile.
Series.rank([axis, method, numeric_only, ...])	Compute numerical data ranks (1 through n) along axis.
Series.sem([axis, skipna, ddof, numeric_only])	Return unbiased standard error of the mean over requested axis.
Series.skew([axis, skipna, numeric_only])	Return unbiased skew over requested axis.
Series.std([axis, skipna, ddof, numeric_only])	Return sample standard deviation over requested axis.
Series.sum([axis, skipna, numeric_only, ...])	Return the sum of the values over the requested axis.
Series.var([axis, skipna, ddof, numeric_only])	Return unbiased variance over requested axis.
Series.kurtosis([axis, skipna, numeric_only])	Return unbiased kurtosis over requested axis.
Series.unique()	Return unique values of Series object.
Series.nunique([dropna])	Return number of unique elements in the object.
Series.is_unique	Return boolean if values in the object are unique.
Series.is_monotonic_increasing	Return boolean if values in the object are monotonically increasing.
Series.is_monotonic_decreasing	Return boolean if values in the object are monotonically decreasing.
Series.value_counts([normalize, sort, ...])	Return a Series containing counts of unique values.

Reindexing / selection / label manipulation

Series.align(other[, join, axis, level, ...])	Align two objects on their axes with the specified join method.
Series.case_when(caselist)	Replace values where the conditions are True.
Series.drop([labels, axis, index, columns, ...])	Return Series with specified index labels removed.
Series.droplevel(level[, axis])	Return Series/DataFrame with requested index / column level(s) removed.
Series.drop_duplicates(*[, keep, inplace, ...])	Return Series with duplicate values removed.
Series.duplicated([keep])	Indicate duplicate Series values.
Series.equals(other)	Test whether two objects contain the same elements.
Series.first(offset)	(DEPRECATED) Select initial periods of time series data based on a date offset.
Series.head([n])	Return the first n rows.
Series.idxmax([axis, skipna])	Return the row label of the maximum value.
Series.idxmin([axis, skipna])	Return the row label of the minimum value.
Series.isin(values)	Whether elements in Series are contained in values.
Series.last(offset)	(DEPRECATED) Select final periods of time series data based on a date offset.
Series.reindex([index, axis, method, copy, ...])	Conform Series to new index with optional filling logic.
Series.reindex_like(other[, method, copy, ...])	Return an object with matching indices as other object.
Series.rename([index, axis, copy, inplace, ...])	Alter Series index labels or name.
Series.rename_axis([mapper, index, axis, ...])	Set the name of the axis for the index or columns.
Series.reset_index([level, drop, name, ...])	Generate a new DataFrame or Series with the index reset.
Series.sample([n, frac, replace, weights, ...])	Return a random sample of items from an axis of object.
Series.set_axis(labels, *[, axis, copy])	Assign desired index to given axis.
Series.take(indices[, axis])	Return the elements in the given positional indices along an axis.
Series.tail([n])	Return the last n rows.
Series.truncate([before, after, axis, copy])	Truncate a Series or DataFrame before and after some index value.
Series.where(cond[, other, inplace, axis, level])	Replace values where the condition is False.
Series.mask(cond[, other, inplace, axis, level])	Replace values where the condition is True.
Series.add_prefix(prefix[, axis])	Prefix labels with string prefix.
Series.add_suffix(suffix[, axis])	Suffix labels with string suffix.
Series.filter([items, like, regex, axis])	Subset the dataframe rows or columns according to the specified index labels.

Missing data handling

Series.backfill(*[, axis, inplace, limit, ...])	(DEPRECATED) Fill NA/NaN values by using the next valid observation to fill the gap.
Series.bfill(*[, axis, inplace, limit, ...])	Fill NA/NaN values by using the next valid observation to fill the gap.
Series.dropna(*[, axis, inplace, how, ...])	Return a new Series with missing values removed.
Series.ffill(*[, axis, inplace, limit, ...])	Fill NA/NaN values by propagating the last valid observation to next valid.
Series.fillna([value, method, axis, ...])	Fill NA/NaN values using the specified method.
Series.interpolate([method, axis, limit, ...])	Fill NaN values using an interpolation method.
Series.isna()	Detect missing values.
Series.isnull()	Series.isnull is an alias for Series.isna.
Series.notna()	Detect existing (non-missing) values.
Series.notnull()	Series.notnull is an alias for Series.notna.
Series.pad(*[, axis, inplace, limit, downcast])	(DEPRECATED) Fill NA/NaN values by propagating the last valid observation to next valid.
Series.replace([to_replace, value, inplace, ...])	Replace values given in to_replace with value.

Reshaping, sorting

Series.argsort([axis, kind, order, stable])	Return the integer indices that would sort the Series values.
Series.argmin([axis, skipna])	Return int position of the smallest value in the Series.
Series.argmax([axis, skipna])	Return int position of the largest value in the Series.
Series.reorder_levels(order)	Rearrange index levels using input order.
Series.sort_values(*[, axis, ascending, ...])	Sort by the values.
Series.sort_index(*[, axis, level, ...])	Sort Series by index labels.
Series.swaplevel([i, j, copy])	Swap levels i and j in a MultiIndex.
Series.unstack([level, fill_value, sort])	Unstack, also known as pivot, Series with MultiIndex to produce DataFrame.
Series.explode([ignore_index])	Transform each element of a list-like to a row.
Series.searchsorted(value[, side, sorter])	Find indices where elements should be inserted to maintain order.
Series.ravel([order])	(DEPRECATED) Return the flattened underlying data as an ndarray or ExtensionArray.
Series.repeat(repeats[, axis])	Repeat elements of a Series.
Series.squeeze([axis])	Squeeze 1 dimensional axis objects into scalars.
Series.view([dtype])	(DEPRECATED) Create a new view of the Series.

Combining / comparing / joining / merging

Series.compare(other[, align_axis, ...])	Compare to another Series and show the differences.
Series.update(other)	Modify Series in place using values from passed Series.

Time Series-related

Series.asfreq(freq[, method, how, ...])	Convert time series to specified frequency.
Series.asof(where[, subset])	Return the last row(s) without any NaNs before where.
Series.shift([periods, freq, axis, ...])	Shift index by desired number of periods with an optional time freq.
Series.first_valid_index()	Return index for first non-NA value or None, if no non-NA value is found.
Series.last_valid_index()	Return index for last non-NA value or None, if no non-NA value is found.
Series.resample(rule[, axis, closed, label, ...])	Resample time-series data.
Series.tz_convert(tz[, axis, level, copy])	Convert tz-aware axis to target time zone.
Series.tz_localize(tz[, axis, level, copy, ...])	Localize tz-naive index of a Series or DataFrame to target time zone.
Series.at_time(time[, asof, axis])	Select values at particular time of day (e.g., 9:30AM).
Series.between_time(start_time, end_time[, ...])	Select values between particular times of the day (e.g., 9:00-9:30 AM).

Accessors

pandas provides dtype-specific methods under various accessors. These are separate namespaces within Series that only apply to specific data types.

Series.str	alias of StringMethods
Series.cat	alias of CategoricalAccessor
Series.dt	alias of CombinedDatetimelikeProperties
Series.sparse	alias of SparseAccessor
DataFrame.sparse	alias of SparseFrameAccessor
Index.str	alias of StringMethods

Data Type	Accessor
Datetime, Timedelta, Period	dt
String	str
Categorical	cat
Sparse	sparse

Datetimelike properties

Series.dt can be used to access the values of the series as datetimelike and return several properties. These can be accessed like Series.dt.<property>.

Datetime properties

Series.dt.date	Returns numpy array of python datetime.date objects.
Series.dt.time	Returns numpy array of datetime.time objects.
Series.dt.timetz	Returns numpy array of datetime.time objects with timezones.
Series.dt.year	The year of the datetime.
Series.dt.month	The month as January=1, December=12.
Series.dt.day	The day of the datetime.
Series.dt.hour	The hours of the datetime.
Series.dt.minute	The minutes of the datetime.
Series.dt.second	The seconds of the datetime.
Series.dt.microsecond	The microseconds of the datetime.
Series.dt.nanosecond	The nanoseconds of the datetime.
Series.dt.dayofweek	The day of the week with Monday=0, Sunday=6.
Series.dt.day_of_week	The day of the week with Monday=0, Sunday=6.
Series.dt.weekday	The day of the week with Monday=0, Sunday=6.
Series.dt.dayofyear	The ordinal day of the year.
Series.dt.day_of_year	The ordinal day of the year.
Series.dt.days_in_month	The number of days in the month.
Series.dt.quarter	The quarter of the date.
Series.dt.is_month_start	Indicates whether the date is the first day of the month.
Series.dt.is_month_end	Indicates whether the date is the last day of the month.
Series.dt.is_quarter_start	Indicator for whether the date is the first day of a quarter.
Series.dt.is_quarter_end	Indicator for whether the date is the last day of a quarter.
Series.dt.is_year_start	Indicate whether the date is the first day of a year.
Series.dt.is_year_end	Indicate whether the date is the last day of the year.
Series.dt.is_leap_year	Boolean indicator if the date belongs to a leap year.
Series.dt.daysinmonth	The number of days in the month.
Series.dt.days_in_month	The number of days in the month.
Series.dt.tz	Return the timezone.
Series.dt.freq	Return the frequency object for this PeriodArray.
Series.dt.unit

Datetime methods

Series.dt.isocalendar()	Calculate year, week, and day according to the ISO 8601 standard.
Series.dt.to_period(*args, **kwargs)	Cast to PeriodArray/PeriodIndex at a particular frequency.
Series.dt.to_pydatetime()	(DEPRECATED) Return the data as an array of datetime.datetime objects.
Series.dt.tz_localize(*args, **kwargs)	Localize tz-naive Datetime Array/Index to tz-aware Datetime Array/Index.
Series.dt.tz_convert(*args, **kwargs)	Convert tz-aware Datetime Array/Index from one time zone to another.
Series.dt.normalize(*args, **kwargs)	Convert times to midnight.
Series.dt.strftime(*args, **kwargs)	Convert to Index using specified date_format.
Series.dt.round(*args, **kwargs)	Perform round operation on the data to the specified freq.
Series.dt.floor(*args, **kwargs)	Perform floor operation on the data to the specified freq.
Series.dt.ceil(*args, **kwargs)	Perform ceil operation on the data to the specified freq.
Series.dt.month_name(*args, **kwargs)	Return the month names with specified locale.
Series.dt.day_name(*args, **kwargs)	Return the day names with specified locale.
Series.dt.as_unit(*args, **kwargs)

Period properties

Series.dt.qyear
Series.dt.start_time	Get the Timestamp for the start of the period.
Series.dt.end_time	Get the Timestamp for the end of the period.

Timedelta properties

Series.dt.days	Number of days for each element.
Series.dt.seconds	Number of seconds (>= 0 and less than 1 day) for each element.
Series.dt.microseconds	Number of microseconds (>= 0 and less than 1 second) for each element.
Series.dt.nanoseconds	Number of nanoseconds (>= 0 and less than 1 microsecond) for each element.
Series.dt.components	Return a Dataframe of the components of the Timedeltas.
Series.dt.unit

Timedelta methods

Series.dt.to_pytimedelta()	Return an array of native datetime.timedelta objects.
Series.dt.total_seconds(*args, **kwargs)	Return total duration of each element expressed in seconds.
Series.dt.as_unit(*args, **kwargs)

String handling

Series.str can be used to access the values of the series as strings and apply several methods to it. These can be accessed like Series.str.<function/property>.

Series.str.capitalize()	Convert strings in the Series/Index to be capitalized.
Series.str.casefold()	Convert strings in the Series/Index to be casefolded.
Series.str.cat([others, sep, na_rep, join])	Concatenate strings in the Series/Index with given separator.
Series.str.center(width[, fillchar])	Pad left and right side of strings in the Series/Index.
Series.str.contains(pat[, case, flags, na, ...])	Test if pattern or regex is contained within a string of a Series or Index.
Series.str.count(pat[, flags])	Count occurrences of pattern in each string of the Series/Index.
Series.str.decode(encoding[, errors])	Decode character string in the Series/Index using indicated encoding.
Series.str.encode(encoding[, errors])	Encode character string in the Series/Index using indicated encoding.
Series.str.endswith(pat[, na])	Test if the end of each string element matches a pattern.
Series.str.extract(pat[, flags, expand])	Extract capture groups in the regex pat as columns in a DataFrame.
Series.str.extractall(pat[, flags])	Extract capture groups in the regex pat as columns in DataFrame.
Series.str.find(sub[, start, end])	Return lowest indexes in each strings in the Series/Index.
Series.str.findall(pat[, flags])	Find all occurrences of pattern or regular expression in the Series/Index.
Series.str.fullmatch(pat[, case, flags, na])	Determine if each string entirely matches a regular expression.
Series.str.get(i)	Extract element from each component at specified position or with specified key.
Series.str.index(sub[, start, end])	Return lowest indexes in each string in Series/Index.
Series.str.join(sep)	Join lists contained as elements in the Series/Index with passed delimiter.
Series.str.len()	Compute the length of each element in the Series/Index.
Series.str.ljust(width[, fillchar])	Pad right side of strings in the Series/Index.
Series.str.lower()	Convert strings in the Series/Index to lowercase.
Series.str.lstrip([to_strip])	Remove leading characters.
Series.str.match(pat[, case, flags, na])	Determine if each string starts with a match of a regular expression.
Series.str.normalize(form)	Return the Unicode normal form for the strings in the Series/Index.
Series.str.pad(width[, side, fillchar])	Pad strings in the Series/Index up to width.
Series.str.partition([sep, expand])	Split the string at the first occurrence of sep.
Series.str.removeprefix(prefix)	Remove a prefix from an object series.
Series.str.removesuffix(suffix)	Remove a suffix from an object series.
Series.str.repeat(repeats)	Duplicate each string in the Series or Index.
Series.str.replace(pat, repl[, n, case, ...])	Replace each occurrence of pattern/regex in the Series/Index.
Series.str.rfind(sub[, start, end])	Return highest indexes in each strings in the Series/Index.
Series.str.rindex(sub[, start, end])	Return highest indexes in each string in Series/Index.
Series.str.rjust(width[, fillchar])	Pad left side of strings in the Series/Index.
Series.str.rpartition([sep, expand])	Split the string at the last occurrence of sep.
Series.str.rstrip([to_strip])	Remove trailing characters.
Series.str.slice([start, stop, step])	Slice substrings from each element in the Series or Index.
Series.str.slice_replace([start, stop, repl])	Replace a positional slice of a string with another value.
Series.str.split([pat, n, expand, regex])	Split strings around given separator/delimiter.
Series.str.rsplit([pat, n, expand])	Split strings around given separator/delimiter.
Series.str.startswith(pat[, na])	Test if the start of each string element matches a pattern.
Series.str.strip([to_strip])	Remove leading and trailing characters.
Series.str.swapcase()	Convert strings in the Series/Index to be swapcased.
Series.str.title()	Convert strings in the Series/Index to titlecase.
Series.str.translate(table)	Map all characters in the string through the given mapping table.
Series.str.upper()	Convert strings in the Series/Index to uppercase.
Series.str.wrap(width, **kwargs)	Wrap strings in Series/Index at specified line width.
Series.str.zfill(width)	Pad strings in the Series/Index by prepending '0' characters.
Series.str.isalnum()	Check whether all characters in each string are alphanumeric.
Series.str.isalpha()	Check whether all characters in each string are alphabetic.
Series.str.isdigit()	Check whether all characters in each string are digits.
Series.str.isspace()	Check whether all characters in each string are whitespace.
Series.str.islower()	Check whether all characters in each string are lowercase.
Series.str.isupper()	Check whether all characters in each string are uppercase.
Series.str.istitle()	Check whether all characters in each string are titlecase.
Series.str.isnumeric()	Check whether all characters in each string are numeric.
Series.str.isdecimal()	Check whether all characters in each string are decimal.
Series.str.get_dummies([sep])	Return DataFrame of dummy/indicator variables for Series.

Categorical accessor

Categorical-dtype specific methods and attributes are available under the Series.cat accessor.

Series.cat.categories	The categories of this categorical.
Series.cat.ordered	Whether the categories have an ordered relationship.
Series.cat.codes	Return Series of codes as well as the index.

Series.cat.rename_categories(*args, **kwargs)	Rename categories.
Series.cat.reorder_categories(*args, **kwargs)	Reorder categories as specified in new_categories.
Series.cat.add_categories(*args, **kwargs)	Add new categories.
Series.cat.remove_categories(*args, **kwargs)	Remove the specified categories.
Series.cat.remove_unused_categories(*args, ...)	Remove categories which are not used.
Series.cat.set_categories(*args, **kwargs)	Set the categories to the specified new categories.
Series.cat.as_ordered(*args, **kwargs)	Set the Categorical to be ordered.
Series.cat.as_unordered(*args, **kwargs)	Set the Categorical to be unordered.

Sparse accessor

Sparse-dtype specific methods and attributes are provided under the Series.sparse accessor.

Series.sparse.npoints	The number of non- fill_value points.
Series.sparse.density	The percent of non- fill_value points, as decimal.
Series.sparse.fill_value	Elements in data that are fill_value are not stored.
Series.sparse.sp_values	An ndarray containing the non- fill_value values.

Series.sparse.from_coo(A[, dense_index])	Create a Series with sparse values from a scipy.sparse.coo_matrix.
Series.sparse.to_coo([row_levels, ...])	Create a scipy.sparse.coo_matrix from a Series with MultiIndex.

List accessor

Arrow list-dtype specific methods and attributes are provided under the Series.list accessor.

Series.list.flatten()	Flatten list values.
Series.list.len()	Return the length of each list in the Series.
Series.list.__getitem__(key)	Index or slice lists in the Series.

Struct accessor

Arrow struct-dtype specific methods and attributes are provided under the Series.struct accessor.

Series.struct.dtypes

Return the dtype object of each child field of the struct.

Series.struct.field(name_or_index)	Extract a child field of a struct as a Series.
Series.struct.explode()	Extract all child fields of a struct as a DataFrame.

Flags

Flags refer to attributes of the pandas object. Properties of the dataset (like the date is was recorded, the URL it was accessed from, etc.) should be stored in Series.attrs.

Flags(obj, *, allows_duplicate_labels)

Flags that apply to pandas objects.

Metadata

Series.attrs is a dictionary for storing global metadata for this Series.

Warning

Series.attrs is considered experimental and may change without warning.

Series.attrs

Dictionary of global attributes of this dataset.

Plotting

Series.plot is both a callable method and a namespace attribute for specific plotting methods of the form Series.plot.<kind>.

Series.plot([kind, ax, figsize, ....])

Series plotting accessor and method

Series.plot.area([x, y, stacked])	Draw a stacked area plot.
Series.plot.bar([x, y])	Vertical bar plot.
Series.plot.barh([x, y])	Make a horizontal bar plot.
Series.plot.box([by])	Make a box plot of the DataFrame columns.
Series.plot.density([bw_method, ind])	Generate Kernel Density Estimate plot using Gaussian kernels.
Series.plot.hist([by, bins])	Draw one histogram of the DataFrame's columns.
Series.plot.kde([bw_method, ind])	Generate Kernel Density Estimate plot using Gaussian kernels.
Series.plot.line([x, y])	Plot Series or DataFrame as lines.
Series.plot.pie(**kwargs)	Generate a pie plot.

Series.hist([by, ax, grid, xlabelsize, ...])

Draw histogram of the input series using matplotlib.

Serialization / IO / conversion

Series.to_pickle(path, *[, compression, ...])	Pickle (serialize) object to file.
Series.to_csv([path_or_buf, sep, na_rep, ...])	Write object to a comma-separated values (csv) file.
Series.to_dict(*[, into])	Convert Series to {label -> value} dict or dict-like object.
Series.to_excel(excel_writer, *[, ...])	Write object to an Excel sheet.
Series.to_frame([name])	Convert Series to DataFrame.
Series.to_xarray()	Return an xarray object from the pandas object.
Series.to_hdf(path_or_buf, *, key[, mode, ...])	Write the contained data to an HDF5 file using HDFStore.
Series.to_sql(name, con, *[, schema, ...])	Write records stored in a DataFrame to a SQL database.
Series.to_json([path_or_buf, orient, ...])	Convert the object to a JSON string.
Series.to_string([buf, na_rep, ...])	Render a string representation of the Series.
Series.to_clipboard(*[, excel, sep])	Copy object to the system clipboard.
Series.to_latex([buf, columns, header, ...])	Render object to a LaTeX tabular, longtable, or nested table.
Series.to_markdown([buf, mode, index, ...])	Print Series in Markdown-friendly format.