通用函数

数据操作

cut(x, bins[, right, labels, retbins, …])	Bin values into discrete intervals.
qcut(x, q[, labels, retbins, precision, …])	Quantile-based discretization function.
concat(objs[, axis, join, ignore_index, …])
melt(frame[, id_vars, value_vars, var_name, …])	Unpivot a DataFrame from wide to long format, optionally leaving identifiers set.
merge(df, right[, how, on, left_on, …])

顶层缺失值处理函数

isna(df)	Detect missing values.
isnull(df)	Detect missing values.
notna(df)	Detect existing (non-missing) values.
notnull(df)	Detect existing (non-missing) values.

顶层日期时间处理函数

to_datetime(arg[, errors, dayfirst, …])	Convert argument to datetime.
date_range([start, end, periods, freq, tz, …])	Return a fixed frequency DatetimeIndex.

顶层计算函数

eval(expr[, parser, engine, local_dict, …])

Evaluate a Python expression as a string using various backends.

Misc

CustomReduction([name, is_gpu])
ExecutableTuple(*args)

mars.dataframe.read_sql_query mars.dataframe.cut