PyExcelerate
PyExcelerate is a Python library for writing Excel-compatible XLSX spreadsheet files, with an emphasis on speed.
Installation
PyExcelerate is supported on Python 2.6, 2.7, 3.3, 3.4, and 3.5.
pip install pyexcelerate
Usage
Writing bulk data
from pyexcelerate import Workbook
data = [[1, 2, 3], [4, 5, 6], [7, 8, 9]] # data is a 2D array
wb = Workbook()
wb.new_sheet("sheet name", data=data)
wb.save("output.xlsx")
Writing bulk data to a range
PyExcelerate also permits you to write data to ranges directly, which is faster than writing cell-by-cell.
from pyexcelerate import Workbook
wb = Workbook()
ws = wb.new_sheet("test")
ws.range("B2", "C3").value = [[1, 2], [3, 4]]
wb.save("output.xlsx")
Writing cell data
from datetime import datetime
from pyexcelerate import Workbook
wb = Workbook()
ws = wb.new_sheet("sheet name")
ws.set_cell_value(1, 1, 15) # a number
ws.set_cell_value(1, 2, 20)
ws.set_cell_value(1, 3, "=SUM(A1,B1)") # a formula
ws.set_cell_value(1, 4, datetime.now()) # a date
wb.save("output.xlsx")
or (slower):
from datetime import datetime
from pyexcelerate import Workbook
wb = Workbook()
ws = wb.new_sheet("sheet name")
ws[1][1].value = 15 # a number
ws[1][2].value = 20
ws[1][3].value = "=SUM(A1,B1)" # a formula
ws[1][4].value = datetime.now() # a date
wb.save("output.xlsx")
Selecting cells by name
from pyexcelerate import Workbook
wb = Workbook()
ws = wb.new_sheet("sheet name")
ws.cell("A1").value = 12
wb.save("output.xlsx")
Merging cells
from pyexcelerate import Workbook
wb = Workbook()
ws = wb.new_sheet("sheet name")
ws[1][1].value = 15
ws.range("A1", "B1").merge()
wb.save("output.xlsx")
Styling cells
Styling cells causes non-negligible overhead. It will increase your execution time (up to 10x longer if done improperly!). Only style cells if absolutely necessary.
from pyexcelerate import Workbook, Color, Style, Font, Fill, Format
from datetime import datetime
wb = Workbook()
ws = wb.new_sheet("sheet name")
ws.set_cell_value(1, 1, 1)
ws.set_cell_style(1, 1, Style(font=Font(bold=True)))
ws.set_cell_style(1, 1, Style(font=Font(italic=True)))
ws.set_cell_style(1, 1, Style(font=Font(underline=True)))
ws.set_cell_style(1, 1, Style(font=Font(strikethrough=True)))
ws.set_cell_style(1, 1, Style(fill=Fill(background=Color(255,0,0,0))))
ws.set_cell_value(1, 2, datetime.now())
ws.set_cell_style(1, 1, Style(format=Format('mm/dd/yy')))
wb.save("output.xlsx")
Note that in this example, subsequent calls to set_cell_style() override the previous styles and they are not merged in. To have a combined style, create a single Style object with multiple properties, for example
ws.set_cell_style(1, 1, Style(font=Font(bold=True), format=Format('mm/dd/yy')))
or (slower):
from pyexcelerate import Workbook, Color
from datetime import datetime
wb = Workbook()
ws = wb.new_sheet("sheet name")
ws.set_cell_value(1, 1, 1)
ws.get_cell_style(1, 1).font.bold = True
ws.get_cell_style(1, 1).font.italic = True
ws.get_cell_style(1, 1).font.underline = True
ws.get_cell_style(1, 1).font.strikethrough = True
ws.get_cell_style(1, 1).fill.background = Color(0, 255, 0, 0)
ws.set_cell_value(1, 2, datetime.now())
ws.get_cell_style(1, 1).format.format = 'mm/dd/yy'
wb.save("output.xlsx")
or (again slower):
from pyexcelerate import Workbook, Color
from datetime import datetime
wb = Workbook()
ws = wb.new_sheet("sheet name")
ws[1][1].value = 1
ws[1][1].style.font.bold = True
ws[1][1].style.font.italic = True
ws[1][1].style.font.underline = True
ws[1][1].style.font.strikethrough = True
ws[1][1].style.fill.background = Color(0, 255, 0, 0)
ws[1][2].value = datetime.now()
ws[1][2].style.format.format = 'mm/dd/yy'
wb.save("output.xlsx")
Note that .style.format.format‘s repetition is due to planned support for conditional formatting and other related features. The formatting syntax may be improved in the future.
Styling ranges
from pyexcelerate import Workbook, Color
from datetime import datetime
wb = Workbook()
ws = wb.new_sheet("test")
ws.range("A1","C3").value = 1
ws.range("A1","C1").style.font.bold = True
ws.range("A2","C3").style.font.italic = True
ws.range("A3","C3").style.fill.background = Color(255, 0, 0, 0)
ws.range("C1","C3").style.font.strikethrough = True
Styling rows
A simpler (and faster) way to style an entire row.
from pyexcelerate import Workbook, Color, Style, Fill
from datetime import datetime
wb = Workbook()
ws = wb.new_sheet("sheet name")
ws.set_row_style(1, Style(fill=Fill(background=Color(255,0,0,0))))
wb.save("output.xlsx")
or (slower):
from pyexcelerate import Workbook, Color
from datetime import datetime
wb = Workbook()
ws = wb.new_sheet("sheet name")
ws.get_row_style(1).fill.background = Color(255, 0, 0)
wb.save("output.xlsx")
or (again slower):
from pyexcelerate import Workbook, Color
from datetime import datetime
wb = Workbook()
ws = wb.new_sheet("sheet name")
ws[1].style.fill.background = Color(255, 0, 0)
wb.save("output.xlsx")
Styling columns
from pyexcelerate import Workbook, Color, Style, Fill
from datetime import datetime
wb = Workbook()
ws = wb.new_sheet("sheet name")
ws.set_col_style(1, Style(fill=Fill(background=Color(255,0,0,0))))
wb.save("output.xlsx")
Available style attributes
Consistent with the implementation patterns above, the following style parameters are available:
ws[1][1].style.font.bold = True
ws[1][1].style.font.italic = True
ws[1][1].style.font.underline = True
ws[1][1].style.font.strikethrough = True
ws[1][1].style.font.color = Color(255, 0, 255)
ws[1][1].style.fill.background = Color(0, 255, 0)
ws[1][1].style.alignment.vertical = 'top'
ws[1][1].style.alignment.horizontal = 'right'
ws[1][1].style.alignment.rotation = 90
ws[1][1].style.alignment.wrap_text = True
ws[1][1].style.borders.top.color = Color(255, 0, 0)
ws[1][1].style.borders.right.style = '-.'
Each attribute also has constructors for implementing via set_cell_style().
The following border styles are available: .-, ..-, --, .., =, ., medium -., medium -.., medium --, /-., _
Setting row heights and column widths
Row heights and column widths are set using the size attribute in Style. Appropriate values are:
* -1 for auto-fit
* 0 for hidden
* Any other value for the appropriate size.
For example, to hide column B:
from pyexcelerate import Workbook, Color, Style, Fill
from datetime import datetime
wb = Workbook()
ws = wb.new_sheet("sheet name")
ws.set_col_style(2, Style(size=0))
wb.save("output.xlsx")
Linked styles
PyExcelerate supports using style objects instead manually setting each attribute as well. This permits you to modify the style at a later time.
from pyexcelerate import Workbook, Font
wb = Workbook()
ws = wb.new_sheet("sheet name")
ws[1][1].value = 1
font = Font(bold=True, italic=True, underline=True, strikethrough=True)
ws[1][1].style.font = font
wb.save("output.xlsx")
Packaging with PyInstaller
PyInstaller is the only packager officially supported by PyExcelerate. Copy hook-pyexcelerate.Writer.py to your PyInstaller hooks directory.
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- License: Simplified BSD License
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