Source for the above image can be found here
Table of Contents
- Quick Start
- Formatting Options
- Exporters
- Building Samples
- Generating Single Header
- Contributing
- License
Quick Start
tabulate is a header-only library. Just add include/ to your include_directories and you should be good to go. A single header file version is also available in single_include/.
NOTE Tabulate supports >=C++11. The rest of this README, however, assumes C++17 support.
Create a Table object and call Table.add_rows to add rows to your table.
#include <tabulate/table.hpp>
using namespace tabulate;
int main() {
Table universal_constants;
universal_constants.add_row({"Quantity", "Value"});
universal_constants.add_row({"Characteristic impedance of vacuum", "376.730 313 461... Ω"});
universal_constants.add_row({"Electric constant (permittivity of free space)", "8.854 187 817... × 10⁻¹²F·m⁻¹"});
universal_constants.add_row({"Magnetic constant (permeability of free space)", "4π × 10⁻⁷ N·A⁻² = 1.2566 370 614... × 10⁻⁶ N·A⁻²"});
universal_constants.add_row({"Gravitational constant (Newtonian constant of gravitation)", "6.6742(10) × 10⁻¹¹m³·kg⁻¹·s⁻²"});
universal_constants.add_row({"Planck's constant", "6.626 0693(11) × 10⁻³⁴ J·s"});
universal_constants.add_row({"Dirac's constant", "1.054 571 68(18) × 10⁻³⁴ J·s"});
universal_constants.add_row({"Speed of light in vacuum", "299 792 458 m·s⁻¹"});
You can format this table using Table.format() which returns a Format object. Using a fluent interface, format properties of the table, e.g., borders, font styles, colors etc.
universal_constants.format()
.font_style({FontStyle::bold})
.border_top(" ")
.border_bottom(" ")
.border_left(" ")
.border_right(" ")
.corner(" ");
You can access rows in the table using Table[row_index]. This will return a Row object on which you can similarly call Row.format() to format properties of all the cells in that row.
Now, let's format the header of the table. The following code changes the font background of the header row to red, aligns the cell contents to center and applies a padding to the top and bottom of the row.
universal_constants[0].format()
.padding_top(1)
.padding_bottom(1)
.font_align(FontAlign::center)
.font_style({FontStyle::underline})
.font_background_color(Color::red);
Calling Table.column(index) will return a Column object. Similar to rows, you can use Column.format() to format all the cells in that column.
Now, let's change the font color of the second column to yellow:
universal_constants.column(1).format()
.font_color(Color::yellow);
You can access cells by indexing twice from a table: From a row using Table[row_index][col_index] or from a column using Table.column(col_index)[cell_index]. Just like rows, columns, and tables, you can use Cell.format() to format individual cells
universal_constants[0][1].format()
.font_background_color(Color::blue)
.font_color(Color::white);
}
Print the table using the stream operator<< like so:
std::cout << universal_constants << std::endl;
You could also use Table.print(stream) to print the table, e.g., universal_constants.print(std::cout).
Formatting Options
Style Inheritance Model
Formatting in tabulate follows a simple style-inheritance model. When rendering each cell:
- Apply cell formatting if specified
- If no cell formatting is specified, apply its parent row formatting
- If no row formatting is specified, apply its parent table formatting
- If no table formatting is specified, apply the default table formatting
This enables overriding the formatting for a particular cell even though row or table formatting is specified, e.g., when an entire row is colored yellow but you want a specific cell to be colored red.
Word Wrapping
tabulate supports automatic word-wrapping when printing cells.
Although word-wrapping is automatic, there is a simple override. Automatic word-wrapping is used only if the cell contents do not have any embedded newline \n characters. So, you can embed newline characters in the cell contents and enforce the word-wrapping manually.
#include <tabulate/table.hpp>
using namespace tabulate;
int main() {
Table table;
table.add_row({"This paragraph contains a veryveryveryveryveryverylong word. The long word will "
"break and word wrap to the next line.",
"This paragraph \nhas embedded '\\n' \ncharacters and\n will break\n exactly "
"where\n you want it\n to\n break."});
table[0][0].format().width(20);
table[0][1].format().width(50);
std::cout << table << std::endl;
}
- The above table has 1 row and 2 columns.
- The first cell has automatic word-wrapping.
- The second cell uses the embedded newline characters in the cell contents - even though the second column has plenty of space (50 characters width), it uses user-provided newline characters to break into new lines and enforce the cell style.
- NOTE: Whether word-wrapping is automatic or not,
tabulateperforms a trim operation on each line of each cell to remove whitespace characters from either side of line.
NOTE: Both columns in the above table are left-aligned by default. This, however, can be easily changed.
Font Alignment
tabulate supports three font alignment settings: left, center, and right. By default, all table content is left-aligned. To align cells, use .format().font_align(alignment).
#include <tabulate/table.hpp>
using namespace tabulate;
int main() {
Table movies;
movies.add_row({"S/N", "Movie Name", "Director", "Estimated Budget", "Release Date"});
movies.add_row({"tt1979376", "Toy Story 4", "Josh Cooley", "$200,000,000", "21 June 2019"});
movies.add_row({"tt3263904", "Sully", "Clint Eastwood", "$60,000,000", "9 September 2016"});
movies.add_row({"tt1535109", "Captain Phillips", "Paul Greengrass", "$55,000,000", " 11 October 2013"});
// center align 'Director' column
movies.column(2).format()
.font_align(FontAlign::center);
// right align 'Estimated Budget' column
movies.column(3).format()
.font_align(FontAlign::right);
// right align 'Release Date' column
movies.column(4).format()
.font_align(FontAlign::right);
// center-align and color header cells
for (size_t i = 0; i < 5; ++i) {
movies[0][i].format()
.font_color(Color::yellow)
.font_align(FontAlign::center)
.font_style({FontStyle::bold});
}
std::cout << movies << std::endl;
}
Font Styles
tabulate supports 8 font styles: bold, dark, italic, underline, blink, reverse, concealed, crossed. Depending on the terminal (or terminal settings), some of these might not work.
To apply a font style, simply call .format().font_style({...}). The font_style method takes a vector of font styles. This allows to apply multiple font styles to a cell, e.g., bold and italic.
#include <tabulate/table.hpp>
using namespace tabulate;
int main() {
Table styled_table;
styled_table.add_row({"Bold", "Italic", "Bold & Italic", "Blinking"});
styled_table.add_row({"Underline", "Crossed", "Dark", "Bold, Italic & Underlined"});
styled_table[0][0].format()
.font_style({FontStyle::bold});
styled_table[0][1].format()
.font_style({FontStyle::italic});
styled_table[0][2].format()
.font_style({FontStyle::bold, FontStyle::italic});
styled_table[0][3].format()
.font_style({FontStyle::blink});
styled_table[1][0].format()
.font_style({FontStyle::underline});
styled_table[1][1].format()
.font_style({FontStyle::crossed});
styled_table[1][2].format()
.font_style({FontStyle::dark});
styled_table[1][3].format()
.font_style({FontStyle::bold, FontStyle::italic, FontStyle::underline});
std::cout << styled_table << std::endl;
}
NOTE: Font styles are applied to the entire cell. Unlike HTML, you cannot currently apply styles to specific words in a cell.
Cell Colors
There are a number of methods in the Format object to color cells - foreground and background - for font, borders, corners, and column separators. Thanks to termcolor, tabulate supports 8 colors: grey, red, green, yellow, blue, magenta, cyan, and white. The look of these colors vary depending on your terminal.
For font, border, and corners, you can call .format().<element>_color(value) to set the foreground color and .format().<element>_background_color(value) to set the background color. Here's an example:
#include <tabulate/table.hpp>
using namespace tabulate;
int main() {
Table colors;
colors.add_row({"Font Color is Red", "Font Color is Blue", "Font Color is Green"});
colors.add_row({"Everything is Red", "Everything is Blue", "Everything is Green"});
colors.add_row({"Font Background is Red", "Font Background is Blue", "Font Background is Green"});
colors[0][0].format()
.font_color(Color::red)
.font_style({FontStyle::bold});
colors[0][1].format()
.font_color(Color::blue)
.font_style({FontStyle::bold});
colors[0][2].format()
.font_color(Color::green)
.font_style({FontStyle::bold});
colors[1][0].format()
.border_left_color(Color::red)
.border_left_background_color(Color::red)
.font_background_color(Color::red)
.font_color(Color::red);
colors[1][1].format()
.border_left_color(Color::blue)
.border_left_background_color(Color::blue)
.font_background_color(Color::blue)
.font_color(Color::blue);
colors[1][2].format()
.border_left_color(Color::green)
.border_left_background_color(Color::green)
.font_background_color(Color::green)
.font_color(Color::green)
.border_right_color(Color::green)
.border_right_background_color(Color::green);
colors[2][0].format()
.font_background_color(Color::red)
.font_style({FontStyle::bold});
colors[2][1].format()
.font_background_color(Color::blue)
.font_style({FontStyle::bold});
colors[2][2].format()
.font_background_color(Color::green)
.font_style({FontStyle::bold});
std::cout << colors << std::endl;
}
Borders and Corners
tabulate allows for fine control over borders and corners. For each border and corner, you can set the text, color, and background color.
NOTE: You can use .corner(..), .corner_color(..), and .corner_background_color(..) to set a common style for all corners. Similarly, you can use .border(..), .border_color(..) and .border_background_color(..) to set a common style for all borders.
NOTE: Note the use of .format().multi_byte_characters(true). Use this when you know your table has multi-byte characters. This is an opt-in because the calculation of column width when dealing with multi-byte characters is more involved and you don't want to pay the performance penalty unless you need it. Just like any other format setting, you can set this at the table-level, row-level, or on a per-cell basis.
Here's an example where each border and corner is individually styled:
#include <tabulate/table.hpp>
using namespace tabulate;
int main() {
Table table;
table.add_row({"ᛏᚺᛁᛊ ᛁᛊ ᚨ ᛊᛏᛟᚱy ᛟᚠᚨ ᛒᛖᚨᚱ ᚨᚾᛞ\n"
"ᚨ ᚹᛟᛚᚠ, ᚹᚺᛟ ᚹᚨᚾᛞᛖᚱᛖᛞ ᛏᚺᛖ\n"
"ᚱᛖᚨᛚᛗᛊ ᚾᛁᚾᛖ ᛏᛟ ᚠᚢᛚᚠᛁᛚᛚ ᚨ ᛈᚱᛟᛗᛁᛊᛖ\n"
"ᛏᛟ ᛟᚾᛖ ᛒᛖᚠᛟᚱᛖ; ᛏᚺᛖy ᚹᚨᛚᚲ ᛏᚺᛖ\n"
"ᛏᚹᛁᛚᛁᚷᚺᛏ ᛈᚨᛏᚺ, ᛞᛖᛊᛏᛁᚾᛖᛞ ᛏᛟ\n"
"ᛞᛁᛊcᛟᚹᛖᚱ ᛏᚺᛖ ᛏᚱᚢᛏᚺ\nᛏᚺᚨᛏ ᛁᛊ ᛏᛟ cᛟᛗᛖ."});
table.format()
.multi_byte_characters(true)
// Font styling
.font_style({FontStyle::bold, FontStyle::dark})
.font_align(FontAlign::center)
.font_color(Color::red)
.font_background_color(Color::yellow)
// Corners
.corner_top_left("ᛰ")
.corner_top_right("ᛯ")
.corner_bottom_left("ᛮ")
.corner_bottom_right("ᛸ")
.corner_top_left_color(Color::cyan)
.corner_top_right_color(Color::yellow)
.corner_bottom_left_color(Color::green)
.corner_bottom_right_color(Color::red)
// Borders
.border_top("ᛜ")
.border_bottom("ᛜ")
.border_left("ᚿ")
.border_right("ᛆ")
.border_left_color(Color::yellow)
.border_right_color(Color::green)
.border_top_color(Color::cyan)
.border_bottom_color(Color::red);
std::cout << table << std::endl;
}
Range-based Iteration
Hand-picking and formatting cells using operator[] gets tedious very quickly. To ease this, tabulate supports range-based iteration on tables, rows, and columns. Quickly iterate over rows and columns to format cells.
#include <tabulate/table.hpp>
using namespace tabulate;
int main() {
Table table;
table.add_row({"Company", "Contact", "Country"});
table.add_row({"Alfreds Futterkiste", "Maria Anders", "Germany"});
table.add_row({"Centro comercial Moctezuma", "Francisco Chang", "Mexico"});
table.add_row({"Ernst Handel", "Roland Mendel", "Austria"});
table.add_row({"Island Trading", "Helen Bennett", "UK"});
table.add_row({"Laughing Bacchus Winecellars", "Yoshi Tannamuri", "Canada"});
table.add_row({"Magazzini Alimentari Riuniti", "Giovanni Rovelli", "Italy"});
// Set width of cells in each column
table.column(0).format().width(40);
table.column(1).format().width(30);
table.column(2).format().width(30);
// Iterate over cells in the first row
for (auto& cell : table[0]) {
cell.format()
.font_style({FontStyle::underline})
.font_align(FontAlign::center);
}
// Iterator over cells in the first column
for (auto& cell : table.column(0)) {
if (cell.get_text() != "Company") {
cell.format()
.font_align(FontAlign::right);
}
}
// Iterate over rows in the table
size_t index = 0;
for (auto& row : table) {
row.format()
.font_style({FontStyle::bold});
// Set blue background color for alternate rows
if (index > 0 && index % 2 == 0) {
for (auto& cell : row) {
cell.format()
.font_background_color(Color::blue);
}
}
index += 1;
}
std::cout << table << std::endl;
}
Nested Tables
Table.add_row(...) takes either a std::string or a tabulate::Table. This can be used to nest tables within tables. Here's an example program that prints a UML class diagram using tabulate. Note the use of font alignment, style, and width settings to generate a diagram that looks centered and great.
#include <tabulate/table.hpp>
using namespace tabulate;
int main() {
Table class_diagram;
// Global styling
class_diagram.format().font_style({FontStyle::bold}).font_align(FontAlign::center).width(60);
// Animal class
Table animal;
animal.add_row({"Animal"});
animal[0].format().font_align(FontAlign::center);
// Animal properties nested table
Table animal_properties;
animal_properties.format().width(20);
animal_properties.add_row({"+age: Int"});
animal_properties.add_row({"+gender: String"});
animal_properties[1].format().hide_border_top();
// Animal methods nested table
Table animal_methods;
animal_methods.format().width(20);
animal_methods.add_row({"+isMammal()"});
animal_methods.add_row({"+mate()"});
animal_methods[1].format().hide_border_top();
animal.add_row({animal_properties});
animal.add_row({animal_methods});
animal[2].format().hide_border_top();
class_diagram.add_row({animal});
// Add rows in the class diagram for the up-facing arrow
// THanks to center alignment, these will align just fine
class_diagram.add_row({"▲"});
class_diagram[1][0].format().hide_border_top().multi_byte_characters(true); // ▲ is multi-byte
class_diagram.add_row({"|"});
class_diagram[2].format().hide_border_top();
class_diagram.add_row({"|"});
class_diagram[3].format().hide_border_top();
// Duck class
Table duck;
duck.add_row({"Duck"});
duck[0].format().font_align(FontAlign::center);
// Duck proeperties nested table
Table duck_properties;
duck_properties.format().width(40);
duck_properties.add_row({"+beakColor: String = \"yellow\""});
// Duck methods nested table
Table duck_methods;
duck_methods.format().width(40);
duck_methods.add_row({"+swim()"});
duck_methods.add_row({"+quack()"});
duck_methods[1].format().hide_border_top();
duck.add_row({duck_properties});
duck.add_row({duck_methods});
duck[2].format().hide_border_top();
class_diagram.add_row({duck});
class_diagram[4].format().hide_border_top();
std::cout << class_diagram << std::endl;
}
UTF-8 Support
In *nix, wcswidth is used to compute the display width of multi-byte characters. Column alignment works well when your system supports the necessary locale, e.g., I've noticed on MacOS 10 there is no Arabic locale (searched with locale -a) and this ends up causing alignment issues when using Arabic text, e.g., "ٲنَا بحِبَّك (Ana bahebak)" in tables.
The following table prints the phrase I love you in different languages. Note the use of .format().multi_byte_characters(true) for the second column. Remember to do this when dealing with multi-byte characters.
#include <tabulate/table.hpp>
using namespace tabulate;
int main() {
Table table;
table.format().corner("♥")
.font_style({FontStyle::bold})
.corner_color(Color::magenta)
.border_color(Color::magenta);
table.add_row({"English", "I love you"});
table.add_row({"French", "Je t’aime"});
table.add_row({"Spanish", "Te amo"});
table.add_row({"German", "Ich liebe Dich"});
table.add_row({"Mandarin Chinese", "我爱你"});
table.add_row({"Japanese", "愛してる"});
table.add_row({"Korean", "사랑해 (Saranghae)"});
table.add_row({"Greek", "Σ΄αγαπώ (Se agapo)"});
table.add_row({"Italian", "Ti amo"});
table.add_row({"Russian", "Я тебя люблю (Ya tebya liubliu)"});
table.add_row({"Hebrew", "אני אוהב אותך (Ani ohev otakh)"});
// Column 1 is using mult-byte characters
table.column(1).format()
.multi_byte_characters(true);
std::cout << table << std::endl;
}
You can explicitly set the locale for a cell using .format().locale(value). Note that the locale string is system-specific. So, the following code might throw std::runtime_error locale::facet::_S_create_c_locale name not valid on your system.
// Set English-US locale for first column
table.column(0).format().locale("en_US.UTF-8");
table[0][1].format().locale("en_US.UTF-8");
// Set locale for individual cells
table[1][1].format().locale("fr_FR.UTF-8"); // French
table[2][1].format().locale("es_ES.UTF-8"); // Spanish
table[3][1].format().locale("de_DE.UTF-8"); // German
table[4][1].format().locale("zh_CN.UTF-8"); // Chinese
table[5][1].format().locale("ja_JP.UTF-8"); // Japanese
table[6][1].format().locale("ko_KR.UTF-8"); // Korean
table[7][1].format().locale("el_GR.UTF-8"); // Greek
table[8][1].format().locale("it_IT.UTF-8"); // Italian
table[9][1].format().locale("ru_RU.UTF-8"); // Russian
table[10][1].format().locale("he_IL.UTF-8"); // Hebrew
Exporters
Markdown
Tables can be exported to GitHub-flavored markdown using a MarkdownExporter. Simply create an exporter object and call exporter.dump(table) to generate a Markdown-formatted std::string.
#include <tabulate/markdown_exporter.hpp>
using namespace tabulate;
int main() {
Table movies;
movies.add_row({"S/N", "Movie Name", "Director", "Estimated Budget", "Release Date"});
movies.add_row({"tt1979376", "Toy Story 4", "Josh Cooley", "$200,000,000", "21 June 2019"});
movies.add_row({"tt3263904", "Sully", "Clint Eastwood", "$60,000,000", "9 September 2016"});
movies.add_row(
{"tt1535109", "Captain Phillips", "Paul Greengrass", "$55,000,000", " 11 October 2013"});
// center align 'Director' column
movies.column(2).format().font_align(FontAlign::center);
// right align 'Estimated Budget' column
movies.column(3).format().font_align(FontAlign::right);
// right align 'Release Date' column
movies.column(4).format().font_align(FontAlign::right);
// Color header cells
for (size_t i = 0; i < 5; ++i) {
movies[0][i].format().font_color(Color::yellow).font_style({FontStyle::bold});
}
// Export to Markdown
MarkdownExporter exporter;
auto markdown = exporter.dump(movies);
// tabulate::table
std::cout << movies << "\n\n";
// Exported Markdown
std::cout << markdown << std::endl;
}
The above table renders in Markdown like below.
NOTE: Unlike tabulate, you cannot align individual cells in Markdown. Alignment is on a per-column basis. Markdown allows a second header row where such column-wise alignment can be specified. The MarkdownExporter uses the formatting of the header cells in the original tabulate::Table to decide how to align each column. As per the Markdown spec, columns are left-aligned by default.
| S/N | Movie Name | Director | Estimated Budget | Release Date |
|---|---|---|---|---|
| tt1979376 | Toy Story 4 | Josh Cooley | $200,000,000 | 21 June 2019 |
| tt3263904 | Sully | Clint Eastwood | $60,000,000 | 9 September 2016 |
| tt1535109 | Captain Phillips | Paul Greengrass | $55,000,000 | 11 October 2013 |
AsciiDoc
Tabulate can export tables as AsciiDoc using an AsciiDocExporter.
#include <tabulate/asciidoc_exporter.hpp>
using namespace tabulate;
int main() {
Table movies;
movies.add_row({"S/N", "Movie Name", "Director", "Estimated Budget", "Release Date"});
movies.add_row({"tt1979376", "Toy Story 4", "Josh Cooley", "$200,000,000", "21 June 2019"});
movies.add_row({"tt3263904", "Sully", "Clint Eastwood", "$60,000,000", "9 September 2016"});
movies.add_row(
{"tt1535109", "Captain Phillips", "Paul Greengrass", "$55,000,000", " 11 October 2013"});
// center align 'Director' column
movies.column(2).format().font_align(FontAlign::center);
// right align 'Estimated Budget' column
movies.column(3).format().font_align(FontAlign::right);
// right align 'Release Date' column
movies.column(4).format().font_align(FontAlign::right);
movies[1][2].format().font_style({FontStyle::bold, FontStyle::italic});
movies[2][1].format().font_style({FontStyle::italic});
// Color header cells
for (size_t i = 0; i < 5; ++i) {
movies[0][i]
.format()
.font_color(Color::white)
.font_style({FontStyle::bold})
.background_color(Color::blue);
}
AsciiDocExporter exporter;
auto asciidoc = exporter.dump(movies);
// tabulate::table
std::cout << movies << "\n\n";
// Exported AsciiDoc
std::cout << asciidoc << std::endl;
}
Below is the export of the example above:
[cols="<,<,^,>,>"]
|===
|*S/N*|*Movie Name*|*Director*|*Estimated Budget*|*Release Date*
|tt1979376|Toy Story 4|*_Josh Cooley_*|$200,000,000|21 June 2019
|tt3263904|_Sully_|Clint Eastwood|$60,000,000|9 September 2016
|tt1535109|Captain Phillips|Paul Greengrass|$55,000,000| 11 October 2013
|===
The rendered output you can see here: http://tpcg.io/pbbfU3ks
NOTE Alignment is only supported per column. The font styles FontStyle::bold and FontStyle::italic can be used for each cell, also in combination.
Building Samples
There are a number of samples in the samples/ directory, e.g., Mario. You can build these samples by running the following commands.
mkdir build
cd build
cmake -DSAMPLES=ON -DUSE_CPP17=ON ..
make
./samples/mario
Note the USE_CPP17 variable. Tabulate uses std::variant and std::optional. If you do not have C++17 compiler support for these data structures, build without this flag. Tabulate will then use variant-lite and optional-lite.
Generating Single Header
python3 utils/amalgamate/amalgamate.py -c single_include.json -s .
Contributing
Contributions are welcome, have a look at the CONTRIBUTING.md document for more information.
License
The project is available under the MIT license.
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库引用 使用tabulate库需先引用tabulate import tabulate 函数使用 tabulate.tabulate(tabular_data, headers=(), tablefmt='simple', floatfmt='g', \ numalign='decimal', stralign='left', missingval='',\ showindex='defaul
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(m 为组数) 5.table=tabulate(x) 绘制频数表,返回值 table 中,第一列为 ...这篇关于函数的文档如何下载? 2018-06-23 05:10:51 非常好,matlab概率函数...... Matlab 概率函数大全 统计工具箱函数 表Ⅰ-1 概率...中值绝对差 mean 均值 median 中值 moment 样本...tabulate 频数表 trimmean
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(x,m) 可编辑ppt 4 Matlab相关命令介绍 table=tabulate(x) 绘制频数表,返回值 table 中,第一列为x的值,第二列 为该值出现的次数,最后一列包含每个值的...... (x,m) 2020/7/6 Matlab相关命令介绍 table=tabulate(x) 绘制频数表,返回值 table 中,第一列为x的值,第二列 为该值出现的次数,最后一列包含每个值的百分比
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(m 为组数) 5.table=tabulate(x) 绘制频数表,返回值 table 中,第一列为 ...这篇关于函数的文档如何下载? 2018-06-23 05:10:51 非常好,matlab概率函数...... Matlab 概率函数大全 统计工具箱函数 表Ⅰ-1 概率...中值绝对差 mean 均值 median 中值 moment 样本...tabulate 频数表 trimmean
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format 指定数据输出格式； 不会改变变量值，只是按照指定格式显示。 一般格式： format 变量1 格式1 变量2 格式2……; 字符型变量的输出格式：$w.（与输入格式一样）； 数值型变量的输出格式：w.d、commaw.d(将数值的整数部分自右向左每三位用逗号隔开，其中w包括逗号和小数点)、percentw.d(将数据显示百分比的格式，自动将变量乘以100，并加上%。其中w包括%，%为
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tabulate函数官方文档 tabulate直译是制表，让python实现表格化显示。 tabulate.tabulate(tabular_data, headers=(), tablefmt=u'simple', floatfmt=u'g', numalign=u'decimal', stralign=u'left', missingval=u'') tabular_data:需要显示的内容。
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功能 python的tabulate库提供打印表格数据的功能，支持以下数据类型： 支持二维列表、二维迭代类型、字典迭代等类型 支持NumPy二维数组、pandas.DataFrame类型 输出表格可以通过参数自定义风格 tabulate库的函数 tabulate库只有一个函数tabulate() 介绍一些常用参数： table：表格数据或变量 headers：定义表格的表头 headers=“fi
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说我有一个熊猫数据框： import numpy as np import pandas as pd from tabulate import tabulate A = pd.DataFrame(np.random.randint(0,10,(3,6)),index= ['uno','dos','tres']) A.columns = ['A','B','C','D','E','F'] A.ind