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Apply cell formatting to gspread worksheets

Project description

gspread-formatting

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This package provides complete support of basic cell formatting for Google spreadsheets to the popular gspread package, along with a few related features such as setting “frozen” rows and columns in a worksheet.

The package also offers graceful formatting of Google spreadsheets using a Pandas DataFrame. See the section below for usage and details.

Usage

Basic formatting of a range of cells in a worksheet is offered by the format_cell_range function. All basic formatting components of the v4 Sheets API’s CellFormat are present as classes in the gspread_formatting module, available both by InitialCaps names and camelCase names: for example, the background color class is BackgroundColor but is also available as backgroundColor, while the color class is Color but available also as color. Attributes of formatting components are best specified as keyword arguments using camelCase naming, e.g. backgroundColor=.... Complex formats may be composed easily, by nesting the calls to the classes.

See the CellFormat page of the Sheets API documentation to learn more about each formatting component.:

from gspread_formatting import *

fmt = cellFormat(
    backgroundColor=color(1, 0.9, 0.9),
    textFormat=textFormat(bold=True, foregroundColor=color(1, 0, 1)),
    horizontalAlignment='CENTER'
    )

format_cell_range(worksheet, 'A1:J1', fmt)

The format_cell_ranges function allows for formatting multiple ranges with corresponding formats, all in one function call and Sheets API operation:

fmt = cellFormat(
    backgroundColor=color(1, 0.9, 0.9),
    textFormat=textFormat(bold=True, foregroundColor=color(1, 0, 1)),
    horizontalAlignment='CENTER'
    )

fmt2 = cellFormat(
    backgroundColor=color(0.9, 0.9, 0.9),
    horizontalAlignment='RIGHT'
    )

format_cell_ranges(worksheet, [('A1:J1', fmt), ('K1:K200', fmt2)])

Retrieving, Comparing, and Composing CellFormats

A Google spreadsheet’s own default format, as a CellFormat object, is available via get_default_format(spreadsheet). get_effective_format(worksheet, label) and get_user_entered_format(worksheet, label) also will return for any provided cell label either a CellFormat object (if any formatting is present) or None.

CellFormat objects are comparable with == and !=, and are mutable at all times; they can be safely copied with Python’s copy.deepcopy function. CellFormat objects can be combined into a new CellFormat object using the add method (or + operator). CellFormat objects also offer difference and intersection methods, as well as the corresponding operators - (for difference) and & (for intersection).:

>>> default_format = CellFormat(backgroundColor=color(1,1,1), textFormat=textFormat(bold=True))
>>> user_format = CellFormat(textFormat=textFormat(italic=True))
>>> effective_format = default_format + user_format
>>> effective_format
CellFormat(backgroundColor=color(1,1,1), textFormat=textFormat(bold=True, italic=True))
>>> effective_format - user_format
CellFormat(backgroundColor=color(1,1,1), textFormat=textFormat(bold=True))
>>> effective_format - user_format == default_format
True

Frozen Rows and Columns

The following functions get or set “frozen” row or column counts for a worksheet:

get_frozen_row_count(worksheet)
get_frozen_column_count(worksheet)
set_frozen(worksheet, rows=1)
set_frozen(worksheet, cols=1)
set_frozen(worksheet, rows=1, cols=0)

Formatting a Worksheet Using a Pandas DataFrame

If you are using Pandas DataFrames to provide data to a Google spreadsheet – using perhaps the gspread-dataframe package available on PyPI – the format_with_dataframe function in gspread_formatting.dataframe allows you to use that same DataFrame object and specify formatting for a worksheet. There is a DEFAULT_FORMATTER in the module, which will be used if no formatter object is provided to format_with_dataframe:

from gspread_formatting.dataframe import format_with_dataframe, BasicFormatter
from gspread_formatting import Color

# uses DEFAULT_FORMATTER
format_with_dataframe(worksheet, dataframe, include_index=True, include_column_header=True)

formatter = BasicFormatter(
    header_background_color=Color(0,0,0),
    header_text_color=Color(1,1,1),
    decimal_format='#,##0.00'
)

format_with_dataframe(worksheet, dataframe, formatter, include_index=False, include_column_header=True)

Installation

Requirements

  • Python 2.6+ or Python 3+
  • gspread >= 3.0.0

From PyPI

pip install gspread-formatting

From GitHub

git clone https://github.com/robin900/gspread-formatting.git
cd gspread-formatting
python setup.py install

Development and Testing

Install packages listed in requirements-dev.txt. To run the test suite in test.py you will need to:

  • Authorize as the Google account you wish to use as a test, and download a JSON file containing the credentials. Name the file creds.json and locate it in the top-level folder of the repository.
  • Set up a tests.config file using the tests.config.example file as a template. Specify the ID of a spreadsheet that the Google account you are using can access with write privileges.

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