Explore the techniques and practical applications of pandas writing to excel

In-depth analysis of the method and application of Pandas writing to Excel

Pandas is a powerful Python data processing library that provides various data operation and analysis functions. In data analysis work, it is often necessary to write processed data into Excel files for further processing and display. This article will provide an in-depth analysis of the method and application of Pandas writing to Excel, and provide specific code examples.

Before using Pandas to write to Excel, we need to install the relevant dependent libraries, including Pandas and openpyxl. It can be installed through the following command:

pip install pandas
pip install openpyxl

Next, we will introduce the two methods of writing to Excel provided by Pandas.

Method 1: Use the to_excel method to write to an Excel file

Pandas provides the to_excel method, which can write DataFrame data into an Excel file. The syntax of this method is as follows:

df.to_excel('filename.xlsx', sheet_name='sheet1', index=False)

• 'filename.xlsx': Specify the Excel file name to be written, which can be a relative path or an absolute path.
• sheet_name: Specify the name of the worksheet to be written. Defaults to 'sheet1'.
• index: Whether to write the DataFrame index to the Excel file, the default is True.

Next, we illustrate the application of this method through a specific example.

import pandas as pd

# 创建DataFrame数据
data = {'姓名': ['张三', '李四', '王五'],
        '年龄': [25, 30, 35],
        '性别': ['男', '女', '男']}
df = pd.DataFrame(data)

# 将DataFrame数据写入Excel文件
df.to_excel('data.xlsx', sheet_name='Sheet1', index=False)

After running the above code, an Excel file named 'data.xlsx' will be generated in the current directory. The content of the file is as follows:

import pandas as pd

# 创建ExcelWriter对象
writer = pd.ExcelWriter('filename.xlsx')

# 将DataFrame数据写入到Excel文件中的工作表1
df1.to_excel(writer, sheet_name='Sheet1', index=False)

# 将DataFrame数据写入到Excel文件中的工作表2
df2.to_excel(writer, sheet_name='Sheet2', index=False)

# 保存Excel文件
writer.save()

import pandas as pd

# 创建DataFrame数据
data1 = {'姓名': ['张三', '李四', '王五'],
         '年龄': [25, 30, 35]}
df1 = pd.DataFrame(data1)

data2 = {'城市': ['北京', '上海', '广州'],
         '职业': ['工程师', '教师', '医生']}
df2 = pd.DataFrame(data2)

# 创建ExcelWriter对象
writer = pd.ExcelWriter('data.xlsx')

# 将DataFrame数据写入到Excel文件中的工作表1
df1.to_excel(writer, sheet_name='个人信息', index=False)

# 将DataFrame数据写入到Excel文件中的工作表2
df2.to_excel(writer, sheet_name='工作信息', index=False)

# 保存Excel文件
writer.save()

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