Python——openpyxl reads Excel tables (reading, cell modification, cell background color)

First of all, there are many libraries for python to read Excel, including xlwings, pandas, xlrd, etc. I usually use openpyxl and pandas. Of course, I also like to convert Excel with a relatively large amount of data into csv format for reading.

Today we use openpyxl to read excel files. When reading, we can convert the information of each row into a list. Most importantly, we can output the row number of each row, so that the content of the cell can be modified later, and we can rely on line number

Step 1, read

code:

import os
import openpyxl
# 打开 Excel 文件，获取 Workbook 对象
workbook = openpyxl.load_workbook('./数据源/'+os.listdir('./数据源/')[0])
# 选择需要读取数据的 Sheet，获取 Worksheet 对象
worksheet = workbook.active

# 循环遍历每一行，将每一行的数据以列表形式添加到 rows 列表中

for i, row in enumerate(worksheet.iter_rows(values_only=True), 1):
    d = list(row)
    print(f"行{
      
      i}",d)
# workbook.save("./结果.xlsx"),由于这里只是读取，没有修改，无需保存

Step 2, Modify

If I am in column K, add a column to fill in the line number of the above code

worksheet["K{line number}"] = assignment

Haha, I forgot to skip the first line (add a continue), but it doesn’t matter, the line number of the data is filled correctly (the code below is correct)

import os
import openpyxl
# 打开 Excel 文件，获取 Workbook 对象
workbook = openpyxl.load_workbook('./数据源/'+os.listdir('./数据源/')[0])
# 选择需要读取数据的 Sheet，获取 Worksheet 对象
worksheet = workbook.active

# 循环遍历每一行，将每一行的数据以列表形式添加到 rows 列表中

for i, row in enumerate(worksheet.iter_rows(values_only=True), 1):
    if i== 1:
        continue
    d = list(row)
    worksheet[f"K{
      
      i}"] = i
    print(f"行{
      
      i}",d)

workbook.save("./结果.xlsx")

Set cell width, height, and background color

Let's make column B wider

worksheet.column_dimensions['B'].width = 15

worksheet.column_dimensions['1'].height = 15# This is the row height of the first row, and so on

Set cell background color

worksheet[’A1'].fill = PatternFill("solid", fgColor="3CB371")# For example, set cell A1 to the color ["3CB371"], which is a hexadecimal color

the code

import os
import openpyxl
from openpyxl.styles import PatternFill

# 打开 Excel 文件，获取 Workbook 对象
workbook = openpyxl.load_workbook('./数据源/'+os.listdir('./数据源/')[0])
# 选择需要读取数据的 Sheet，获取 Worksheet 对象
worksheet = workbook.active
worksheet.column_dimensions['C'].width = 20

# 循环遍历每一行，将每一行的数据以列表形式添加到 rows 列表中
d2 = {
    
    i:chr(i+64) for i in range(1, 27)}
# print(d)
for i, row in enumerate(worksheet.iter_rows(values_only=True), 1):
    k = i
    if k<=11:
        worksheet[d2[k]+'1'].fill = PatternFill("solid", fgColor="3CB371")
    if i== 1:
        continue
    d = list(row)
    worksheet[f"K{
      
      i}"] = i
    print(f"行{
      
      i}",d)

workbook.save("./结果.xlsx")

I hope everyone has to help

A little programmer dedicated to office automation

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