AI Code

Python Language Python and Excel

Put list data into a Excel's file.

import os, sys
from openpyxl import Workbook
from datetime import datetime

dt =
list_values = [["01/01/2016", "05:00:00", 3], \
               ["01/02/2016", "06:00:00", 4], \
               ["01/03/2016", "07:00:00", 5], \
               ["01/04/2016", "08:00:00", 6], \
               ["01/05/2016", "09:00:00", 7]]

# Create a Workbook on Excel:
wb = Workbook()
sheet =
sheet.title = 'data'

# Print the titles into Excel Workbook:
row = 1
sheet['A'+str(row)] = 'Date'
sheet['B'+str(row)] = 'Hour'
sheet['C'+str(row)] = 'Value'

# Populate with data
for item in list_values:
    row += 1
    sheet['A'+str(row)] = item[0]
    sheet['B'+str(row)] = item[1]
    sheet['C'+str(row)] = item[2]

# Save a file by date:
filename = 'data_' + dt.strftime("%Y%m%d_%I%M%S") + '.xlsx'

# Open the file for the user:
os.system('start excel.exe "%s\\%s"' % (sys.path[0], filename, ))


OpenPyXL is a module for manipulating and creating xlsx/xlsm/xltx/xltm workbooks in memory.

Manipulating and reading an existing workbook:

import openpyxl as opx
#To change an existing wookbook we located it by referencing its path
workbook = opx.load_workbook(workbook_path)

load_workbook() contains the parameter read_only, setting this to True will load the workbook as read_only, this is helpful when reading larger xlsx files:

workbook = opx.load_workbook(workbook_path, read_only=True)

Once you have loaded the workbook into memory, you can access the individual sheets using workbook.sheets

first_sheet = workbook.worksheets[0]

If you want to specify the name of an available sheets, you can use workbook.get_sheet_names().

sheet = workbook.get_sheet_by_name('Sheet Name')

Finally, the rows of the sheet can be accessed using sheet.rows. To iterate over the rows in a sheet, use:

for row in sheet.rows:
    print row[0].value

Since each row in rows is a list of Cells, use Cell.value to get the contents of the Cell.

Creating a new Workbook in memory:

#Calling the Workbook() function creates a new book in memory
wb = opx.Workbook()

#We can then create a new sheet in the wb
ws = wb.create_sheet('Sheet Name', 0) #0 refers to the index of the sheet order in the wb

Several tab properties may be changed through openpyxl, for example the tabColor:

ws.sheet_properties.tabColor = 'FFC0CB'

To save our created workbook we finish with:'filename.xlsx')

Create excel charts with xlsxwriter

import xlsxwriter

# sample data
chart_data = [
    {'name': 'Lorem', 'value': 23},
    {'name': 'Ipsum', 'value': 48},
    {'name': 'Dolor', 'value': 15},
    {'name': 'Sit', 'value': 8},
    {'name': 'Amet', 'value': 32}

# excel file path
xls_file = 'chart.xlsx'

# the workbook
workbook = xlsxwriter.Workbook(xls_file)

# add worksheet to workbook
worksheet = workbook.add_worksheet()

row_ = 0
col_ = 0

# write headers
worksheet.write(row_, col_, 'NAME')
col_ += 1
worksheet.write(row_, col_, 'VALUE')
row_ += 1

# write sample data 
for item in chart_data:
    col_ = 0
    worksheet.write(row_, col_, item['name'])
    col_ += 1
    worksheet.write(row_, col_, item['value'])
    row_ += 1

# create pie chart
pie_chart = workbook.add_chart({'type': 'pie'})

# add series to pie chart
    'name': 'Series Name',
    'categories': '=Sheet1!$A$3:$A$%s' % row_,
    'values': '=Sheet1!$B$3:$B$%s' % row_,
    'marker': {'type': 'circle'}
# insert pie chart
worksheet.insert_chart('D2', pie_chart)

# create column chart
column_chart = workbook.add_chart({'type': 'column'})

# add serie to column chart
    'name': 'Series Name',
    'categories': '=Sheet1!$A$3:$A$%s' % row_,
    'values': '=Sheet1!$B$3:$B$%s' % row_,
    'marker': {'type': 'circle'}
# insert column chart
worksheet.insert_chart('D20', column_chart)



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Read the excel data using xlrd module

Python xlrd library is to extract data from Microsoft Excel (tm) spreadsheet files.


pip install xlrd

Or you can use file from pypi

Reading an excel sheet:- Import xlrd module and open excel file using open_workbook() method.

import xlrd

Check number of sheets in the excel

print book.nsheets

Print the sheet names

print book.sheet_names()

Get the sheet based on index


Read the contents of a cell

cell = sheet.cell(row,col) #where row=row number and col=column number
print cell.value #to print the cell contents

Get number of rows and number of columns in an excel sheet


Get excel sheet by name

sheets = book.sheet_names()
cur_sheet = book.sheet_by_name(sheets[0])

Format Excel files with xlsxwriter

import xlsxwriter

# create a new file 
workbook = xlsxwriter.Workbook('your_file.xlsx')

# add some new formats to be used by the workbook 
percent_format = workbook.add_format({'num_format': '0%'})
percent_with_decimal = workbook.add_format({'num_format': '0.0%'})
bold = workbook.add_format({'bold': True})
red_font = workbook.add_format({'font_color': 'red'})
remove_format = workbook.add_format()

# add a new sheet 
worksheet = workbook.add_worksheet() 

# set the width of column A 
worksheet.set_column('A:A', 30, )

# set column B to 20 and include the percent format we created earlier 
worksheet.set_column('B:B', 20, percent_format)

# remove formatting from the first row (change in height=None) 
worksheet.set_row('0:0', None, remove_format)


Got any Python Language Question?