xlsxwriter | 易学教程

Python How to use ExcelWriter to write into an existing worksheet

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问题 I am trying to use ExcelWriter to write/add some information into a workbook that contains multiple sheets. First time when I use the function, I am creating the workbook with some data. In the second call, I would like to add some information into the workbook in different locations into all sheets. def Out_Excel(file_name,C,col): writer = pd.ExcelWriter(file_name,engine='xlsxwriter') for tab in tabs: # tabs here is provided from a different function that I did not write here to keep it

Python 操作Excel

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概述在使用Python处理数据的过程中常常需要读取或写入Excel表格，本文简要介绍使用xlrd读取Excel表格数据及使用XlsxWriter将数据写入到指定的sheet中。 Code Sample Excel读操作示例 #coding=utf-8 import xlrd #路径前加 r，读取的文件路径 file_path = r'c:/Users/yuvmtest/Desktop/testdata.xlsx' #获取数据 data = xlrd.open_workbook(file_path) #获取sheet table = data.sheet_by_name('Sheet0') #获取总行数 nrows = table.nrows #获取总列数 ncols = table.ncols print("总行数: %d，总列数: %d" % (nrows, ncols)) #获取一行的数值，例如第2行 rowvalue = table.row_values(2) #获取一列的数值，例如第3列 col_values = table.col_values(3) #获取一个单元格的数值，例如第2行第3列 cell_value = table.cell(2, 3).value print(rowvalue) print(col_values) Excel 写操作示例 # excel

python处理Excel文件的几个模块

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在python中简单地处理excel文件，有几个相关的模块，各有千秋，本文将不定时收录。 Python Excel网站收集了关于python处理excel文件的各种信息。【注意】使用python处理excel文件前，请多备份文件，以防数据丢失。 ------------------ 0x01 xlrd xlrd is a library for reading data and formatting information from Excel files, whether they are .xls or .xlsx files. 官方文档： https://xlrd.readthedocs.io/en/latest/api.html github项目： https://github.com/python-excel/xlrd 安装： pip install xlrd 使用：只能读.xls、.xlsx文件（xlrd0.8.0+版本支持读取xlsx文件） import xlrd book = xlrd.open_workbook("pcat.xls") print("The number of worksheets is {0}".format(book.nsheets)) print("Worksheet name(s): {0}".format(book.sheet

xlsxwriter: is there a way to open an existing worksheet in my workbook?

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问题 I'm able to open my pre-existing workbook, but I don't see any way to open pre-existing worksheets within that workbook. Is there any way to do this? 回答1: You cannot append to an existing xlsx file with xlsxwriter . There is a module called openpyxl which allows you to read and write to preexisting excel file, but I am sure that the method to do so involves reading from the excel file, storing all the information somehow (database or arrays), and then rewriting when you call workbook.close()

Write to StringIO object using Pandas Excelwriter?

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问题 I can pass a StringIO object to pd.to_csv() just fine: io = StringIO.StringIO() pd.DataFrame().to_csv(io) But when using the excel writer, I am having a lot more trouble. io = StringIO.StringIO() writer = pd.ExcelWriter(io) pd.DataFrame().to_excel(writer,\"sheet name\") writer.save() Returns an AttributeError: StringIO instance has no attribute \'rfind\' I\'m trying to create an ExcelWriter object without calling pd.ExcelWriter() but am having some trouble. This is what I\'ve tried so far:

pandas xlsxwriter, format header

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问题 I\'m saving pandas DataFrame to_excel using xlsxwriter. I\'ve managed to format all of my data (set column width, font size etc) except for changing header\'s font and I can\'t find the way to do it. Here\'s my example: import pandas as pd data = pd.DataFrame({\'test_data\': [1,2,3,4,5]}) writer = pd.ExcelWriter(\'test.xlsx\', engine=\'xlsxwriter\') data.to_excel(writer, sheet_name=\'test\', index=False) workbook = writer.book worksheet = writer.sheets[\'test\'] font_fmt = workbook.add_format