非模板类的DataFrame 更多...

#include <DAPyDataFrame.h>

类 DA::DAPyDataFrame 继承关系图:

Public 成员函数
	DAPyDataFrame (const DAPyDataFrame &df)

	DAPyDataFrame (const DAPyObjectWrapper &df)

	DAPyDataFrame (DAPyDataFrame &&df)

	DAPyDataFrame (const pybind11::object &obj)

	DAPyDataFrame (pybind11::object &&obj)

DAPySeries	operator[] (const QString &n) const

DAPySeries	operator[] (size_t n) const

DAPyDataFrame &	operator= (const pybind11::object &obj)

DAPyDataFrame &	operator= (const DAPyDataFrame &obj)

DAPyDataFrame &	operator= (const DAPyObjectWrapper &obj)

DAPyDataFrame &	operator= (pybind11::object &&obj)

DAPyDataFrame &	operator= (DAPyDataFrame &&obj)

DAPyDataFrame &	operator= (DAPyObjectWrapper &&obj)

bool	operator< (const DAPyDataFrame &other) const
	重写小于操作，用于std::map容器，注意，这个小于仅仅比较指针的大小，没有任何意义

QList< QString >	columns () const
	DataFrame.columns

QString	columnName (std::size_t i) const
	获取第n个列名

bool	columns (std::size_t i, const QString &name)
	设置列名

bool	columns (const QList< QString > &cols)
	设置阵列内容

bool	empty () const
	DADataFrame::empty property DataFrame.empty

std::pair< std::size_t, std::size_t >	shape () const
	DADataFrame::shape property DataFrame.shape(row,column)

std::size_t	size () const
	DADataFrame::size property DataFrame.size

QVariant	iat (std::size_t r, std::size_t c) const
	DataFrame.iat Access a single value for a row/column pair by integer position.

pybind11::object	iatObj (std::size_t r, std::size_t c) const
	DataFrame.iat Access a single value for a row/column pair by integer position.

bool	iat (std::size_t r, std::size_t c, const QVariant &v)
	DataFrame.iat Access a single value for a row/column pair by integer position.

bool	iat (std::size_t r, std::size_t c, const pybind11::object &v)

DAPySeries	iloc (std::size_t c) const

DAPySeries	loc (const QString &n) const
	DADataFrame::loc

bool	drop (std::size_t index, int axis=0)
	DataFrame.drop(index=index,axis=axis,inplace=True)

DAPyIndex	index () const
	DAPyDataFrame::index

pybind11::dtype	dtypes (std::size_t c) const
	获取某一列对应的dtype,等同于pandas.DataFrame.dtypes[c]

DAPyDataFrame	describe () const
	pandas.DataFrame.describe

bool	to_csv (const QString &path, const QVariantHash &args=QVariantHash()) const noexcept
	转换为csv

bool	to_pickle (const QString &path, const QVariantHash &args=QVariantHash()) const noexcept
	转换为pickle

bool	to_parquet (const QString &path, const QVariantHash &args=QVariantHash()) const noexcept
	转换为parquet

bool	setIndex (const QString &colName, bool isDrop=true) noexcept
	设置索引

QString	toString (std::size_t maxrow=12) const
	打印为字符串

bool	read_csv (const QString &path, const QVariantHash args=QVariantHash(), QString *why=nullptr)

Public 成员函数继承自 DA::DAPyObjectWrapper
	DAPyObjectWrapper (const DAPyObjectWrapper &obj)

	DAPyObjectWrapper (DAPyObjectWrapper &&obj)

	DAPyObjectWrapper (const pybind11::object &obj)

	DAPyObjectWrapper (pybind11::object &&obj)

bool	isNone () const

DAPyObjectWrapper &	operator= (const DAPyObjectWrapper &obj)

DAPyObjectWrapper &	operator= (DAPyObjectWrapper &&obj)

DAPyObjectWrapper &	operator= (const pybind11::object &obj)

DAPyObjectWrapper &	operator= (pybind11::object &&obj)

bool	operator== (void *ptr) const

bool	operator== (const pybind11::object &obj) const

bool	operator== (const DAPyObjectWrapper &obj) const

bool	operator!= (void *ptr) const

bool	operator!= (const pybind11::object &obj) const

bool	operator!= (const DAPyObjectWrapper &obj) const

	operator bool () const

void	dealException (const std::exception &e) const
	统一的异常处理函数

DAPyObjectWrapper	deepCopy () const
	深拷贝

pybind11::object &	object ()

const pybind11::object &	object () const

QVariant	toVariant () const

bool	isinstance (const pybind11::handle &type) const

bool	isInt () const
	是否为int

bool	isModule () const
	是否为Module

bool	isFloat () const
	是否为float

bool	isStr () const
	是否为str

bool	isBool () const

bool	isList () const

bool	isDict () const

bool	isTuple () const

bool	isCallable () const

bool	isSequence () const

bool	isNumeric () const

void	setErrCallback (const ErrCallback &fun)
	设置错误处理回调

ErrCallback	getErrCallback () const

pybind11::object	attr (const char *c_att)
	获取属性

pybind11::object	attr (const char *c_att) const

template<typename... Args>
pybind11::object	call (Args &&... args)
	直接调用Python可调用对象

QString	__name__ () const
	对应__name__

QString	__str__ () const

QString	__repr__ () const

QString	typeName () const

size_t	refCount () const

静态 Public 成员函数
static bool	isDataFrame (const pybind11::object &obj)

Protected 成员函数
void	checkObjectValid ()

额外继承的成员函数
Public 类型继承自 DA::DAPyObjectWrapper
using	ErrCallback = std::function< void(const char *) >
	异常错误回调函数

Protected 属性继承自 DA::DAPyObjectWrapper
pybind11::object	_object

ErrCallback	_errcallback

详细描述

非模板类的DataFrame

此类相当是对python Dataframe的封装

成员函数说明

◆ columnName()

QString DAPyDataFrame::columnName ( std::size_t i ) const

获取第n个列名

参数

i

返回

◆ columns() [1/3]

QList< QString > DAPyDataFrame::columns ( ) const

DataFrame.columns

返回

◆ columns() [2/3]

bool DAPyDataFrame::columns ( const QList< QString > & cols )

设置阵列内容

参数

cols

返回

◆ columns() [3/3]

bool DAPyDataFrame::columns	(	std::size_t	i,
		const QString &	name
	)

设置列名

参数

i
name

返回

◆ describe()

DAPyDataFrame DAPyDataFrame::describe ( ) const

pandas.DataFrame.describe

返回

◆ drop()

bool DAPyDataFrame::drop	(	std::size_t	index,
		int	axis = `0`
	)

DataFrame.drop(index=index,axis=axis,inplace=True)

参数

index
axis

返回

◆ dtypes()

pybind11::dtype DAPyDataFrame::dtypes ( std::size_t c ) const

获取某一列对应的dtype,等同于pandas.DataFrame.dtypes[c]

参数

c

返回

注解: 注意，此函数会抛出异常

◆ empty()

bool DAPyDataFrame::empty ( ) const

DADataFrame::empty property DataFrame.empty

返回

◆ iat() [1/2]

QVariant DAPyDataFrame::iat	(	std::size_t	r,
		std::size_t	c
	)		const

DataFrame.iat Access a single value for a row/column pair by integer position.

参数

r	row
c	column

返回: 如果没有或超出范围，返回QVariant(),此函数不会做isNone判断

◆ iat() [2/2]

bool DAPyDataFrame::iat	(	std::size_t	r,
		std::size_t	c,
		const QVariant &	v
	)

DataFrame.iat Access a single value for a row/column pair by integer position.

参数

r	row
c	column
v	需要设置的参数值，由于类似于 pandas.iat[r,c] = v

返回: 如果设置成功，返回true

◆ iatObj()

pybind11::object DAPyDataFrame::iatObj	(	std::size_t	r,
		std::size_t	c
	)		const

DataFrame.iat Access a single value for a row/column pair by integer position.

参数

r
c

返回

◆ index()

DAPyIndex DAPyDataFrame::index ( ) const

DAPyDataFrame::index

返回

◆ loc()

DAPySeries DAPyDataFrame::loc ( const QString & n ) const

DADataFrame::loc

参数

n

返回

◆ operator<()

bool DAPyDataFrame::operator< ( const DAPyDataFrame & other ) const

重写小于操作，用于std::map容器，注意，这个小于仅仅比较指针的大小，没有任何意义

参数

other

返回

◆ setIndex()

bool DAPyDataFrame::setIndex	(	const QString &	colName,
		bool	isDrop = `true`
	)

noexcept

设置索引

参数

colName
isDrop

返回

◆ shape()

std::pair< std::size_t, std::size_t > DAPyDataFrame::shape ( ) const

DADataFrame::shape property DataFrame.shape(row,column)

返回

◆ size()

std::size_t DAPyDataFrame::size ( ) const

DADataFrame::size property DataFrame.size

返回: return the number of rows times number of columns if DataFrame.

◆ to_csv()

bool DAPyDataFrame::to_csv	(	const QString &	path,
		const QVariantHash &	args = `QVariantHash()`
	)		const

noexcept

转换为csv

参数

path
args

◆ to_parquet()

bool DAPyDataFrame::to_parquet	(	const QString &	path,
		const QVariantHash &	args = `QVariantHash()`
	)		const

noexcept

转换为parquet

参数

path
args

◆ to_pickle()

bool DAPyDataFrame::to_pickle	(	const QString &	path,
		const QVariantHash &	args = `QVariantHash()`
	)		const

noexcept

转换为pickle

参数

path
args

◆ toString()

QString DAPyDataFrame::toString ( std::size_t maxrow = 12 ) const

打印为字符串

参数

maxrow

返回

该类的文档由以下文件生成:

/home/runner/work/data-workbench/data-workbench/src/DAPyBindQt/pandas/DAPyDataFrame.h
/home/runner/work/data-workbench/data-workbench/src/DAPyBindQt/pandas/DAPyDataFrame.cpp

Public 成员函数

静态 Public 成员函数

Protected 成员函数

额外继承的成员函数

详细描述

成员函数说明

◆ columnName()

◆ columns() [1/3]

◆ columns() [2/3]

◆ columns() [3/3]

◆ describe()

◆ drop()

◆ dtypes()

◆ empty()

◆ iat() [1/2]

◆ iat() [2/2]

◆ iatObj()

◆ index()

◆ loc()

◆ operator<()

◆ setIndex()

◆ shape()

◆ size()

◆ to_csv()

◆ to_parquet()

◆ to_pickle()

◆ toString()