How to read and write Excel files using the xlrd module in python

How to read and write Excel files using the xlrd module in python

This article mainly introduces how to read and write Excel files using the xlrd module in python. It analyzes in detail the installation, usage, and related skills of the xlrd module. For more information, see

1. Install the xlrd Module

Go to the python official website and download http://pypi.python.org/pypi/xlrd.pdf. The python environment has been installed.

II. Introduction

1. Import Module

The Code is as follows:

Import xlrd

2. Open an Excel file to read data

The Code is as follows:

Data = xlrd.open_workbook('excelFile.xls ')

3. Tips

Get a worksheet

The Code is as follows:

Table = data. sheets () [0] # obtain from index order

Table = data. sheet_by_index (0) # obtain from index order

Table = data. sheet_by_name (u'sheet1') # obtain it by name

Get the value of the whole row and the whole column (array)

The Code is as follows:

Table. row_values (I)

Table. col_values (I)

Obtain the number of rows and columns

The Code is as follows:

Nrows = table. nrows

Ncols = table. ncols

Cyclic row List Data

The Code is as follows:

For I in range (nrows ):

Print table. row_values (I)

Cell

The Code is as follows:

Cell_A1 = table. cell (0, 0). value

Cell_C4 = table. cell (2, 3). value

Use row and column Indexes

The Code is as follows:

Cell_A1 = table. row (0) [0]. value

Cell_A2 = table. col (1) [0]. value

Simple Writing

The Code is as follows:

Row = 0

Col = 0

# Type 0 empty, 1 string, 2 number, 3 date, 4 boolean, 5 error

Ctype = 1 value = 'cell value'

Xf = 0 # extended formatting

Table. put_cell (row, col, ctype, value, xf)

Table. cell (0, 0) # cell value'

Table. cell (0, 0). value # cell value'

Iii. Demo code

The Demo code is actually very simple, that is, reading Excel Data.

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49

#-*-Coding: UTF-8 -*- Import xdrlib, sys Import xlrd Def open_excel (file = 'file.xls '): Try: Data = xlrd. open_workbook (file) Return data Except t Exception, e: Print str (e) # Retrieving data parameters in an Excel table based on indexes: file: Excel file path colnameindex: the row where the header column is located, so by_index: The table Index Def excel_table_byindex (file = 'file.xls ', colnameindex = 0, by_index = 0 ): Data = open_excel (file) Table = data. sheets () [by_index] Nrows = table. nrows # number of rows Ncols = table. ncols # Number of Columns Colnames = table. row_values (colnameindex) # a row of data List = [] For rownum in range (1, nrows ): Row = table. row_values (rownum) If row: App = {} For I in range (len (colnames )): App [colnames [I] = row [I] List. append (app) Return list # Obtain the data parameters in the Excel table by name: file: Excel file path colnameindex: the row where the header column is located, so by_name: Sheet1 name Def excel_table_byname (file = 'file.xls ', colnameindex = 0, by_name = u 'sheet1 '): Data = open_excel (file) Table = data. sheet_by_name (by_name) Nrows = table. nrows # number of rows Colnames = table. row_values (colnameindex) # a row of data List = [] For rownum in range (1, nrows ): Row = table. row_values (rownum) If row: App = {} For I in range (len (colnames )): App [colnames [I] = row [I] List. append (app) Return list Def main (): Tables = excel_table_byindex () For row in tables: Print row Tables = excel_table_byname () For row in tables: Print row If _ name __= = "_ main __": Main ()

I hope this article will help you with Python programming.