ptzagk / rapidtables

Super fast list of dicts to pre-formatted tables conversion library for Python 2/3

rapidtables

rapidtables is a module for Python 2/3, which does only one thing: converts lists of dictionaries to pre-formatted tables. And it does the job as fast as possible.

rapidtables is focused on speed and is useful for applications which dynamically refresh data in console. The module code is heavily optimized and written purely in Python.

And unlike other similar modules, rapidtables can output pre-formatted generators of strings or even generators of tuples of strings, which allows you to colorize every single column.

Install

pip install rapidtables

Example

# if you need to keep strict column ordering, use OrderedDict for the rows
data = [
    { 'name': 'John', 'salary': 2000, 'job': 'DevOps' },
    { 'name': 'Jack', 'salary': 2500, 'job': 'Architect' },
    { 'name': 'Diana', 'salary': None, 'job': 'Student' },
    { 'name': 'Ken', 'salary': 1800, 'job': 'Q/A' }
]

from rapidtables import format_table
from termcolor import colored

header, rows = format_table(data, fmt=2)
spacer = '  '
print(colored(spacer.join(header), color='blue'))
print(colored('-' * sum([(len(x) + 2) for x in header]), color='grey'))
for r in rows:
    print(colored(r[0], color='white', attrs=['bold']) + spacer, end='')
    print(colored(r[1], color='cyan') + spacer, end='')
    print(colored(r[2], color='yellow'))

Pretty cool, isn't it? Actually, it was the most complex example, you can work with header + table rows already joined:

header, rows = format_table(data, fmt=1)
print(colored(header, color='blue'))
print(colored('-' * len(header), color='grey'))
for r in rows:
    print(colored(r, color='yellow'))

Or you can use make_table function to return the table out-of-the-box (or print_table to instantly print it), and print it in raw:

print_table(data)

name  salary  job
----  ------  ---------
John    2000  DevOps
Jack    2500  Architect
Ken     1800  Q/A

Quick API reference

format_table

Formats a table. Outputs data in raw, generator of strings (one string per row) or generator of tuples of strings (one tuple per row, one string per column):

• fmt=0 raw string
• fmt=1 generator of strings
• fmt=2 generator of tuples of strings

You may also customize headers, separators etc. Read pydoc for more info.

make_table

Generates a ready to output table. Support basic formats:

table = rapidtables.make_table(data, tablefmt='raw')

name  salary  job
-----------------------
John    2000  DevOps
Jack    2500  Architect
Ken     1800  Q/A

table = rapidtables.make_table(data, tablefmt='simple')

name  salary  job
----  ------  ---------
John    2000  DevOps
Jack    2500  Architect
Ken     1800  Q/A

table = rapidtables.make_table(data, tablefmt='md') # Markdown

| name | salary | job       |
|------|--------|-----------|
| John |   2000 | DevOps    |
| Jack |   2500 | Architect |
| Ken  |   1800 | Q/A       |

table = rapidtables.make_table(data, tablefmt='rst') # reStructured Text

====  ======  =========
name  salary  job
====  ======  =========
John    2000  DevOps
Jack    2500  Architect
Ken     1800  Q/A
====  ======  =========

print_table

The same as make_table, but prints table to stdout.

Benchmarks

(Python 3.7)

Enjoy!