• openpyxl基础


    一、官方文档
    https://openpyxl.readthedocs.io
    
    二 openpyxl常用属性函数
    
    常用函数或者属性                    说明
    openpyxl.load_workbook()            加载excel工作本
    Workbook.active                        获得默认sheet
    Workbook.create_sheet()                创建sheet
    Workbook.get_sheet_names()            已过时, 获得所有sheet名称
    workbook.sheetnames                    获得所有sheet名称
    workbook.get_sheet_by_name(name)    已过时获得指定的sheet对象
    workbook[sheetname]                    获得指定的sheet对象
    workbook.copy_worksheet(soure)        复制sheet
    sheet[cell]                            获取单个单元格
    sheet.cell(self, row, column, value=None)        获取单个单元格
    sheet[cell,cell]                    访问多个单元格
    sheet.iter_rows(min_row, max_col, max_row)        返回多行,用于访问多个单元格
    sheet.iter_cols(min_row, max_col, max_row)        返回多列,用于访问多个单元格
    sheet.rows                            获取所有行
    sheet.columns                        获取所有列
    cell.value                            获取属性值
    sheet.merge_cells()                    合并单元格
    sheet.unmerge_cells()                取消合并单元格
    
    
    三 读取excel
    读取整体流程如下:
    
    加载工作本
    获取标签页
    获取指定区域的单元格
    获取单个单元格对象
    通过单元格对象获取值
    
    
    3.1 创建一个名为zszxz.xlsx excel文件;其中标签sheet名为zszxz; 列A B C 如下;
    
    id num name
    1 100 zszxz
    2 101 smile
    3 102 kitty
    4 103 wolf
    5 104 cloud
    6 105 water
    
    3.2 支持操作excel和图像(安装第三方库即可)
    pip install openpyxl
    pip install pillow
    
    
    3.3 获取所有标签页名称
    # -*- coding: utf-8 -*-
    import openpyxl
    path = r'C:xxzszxz.xlsx'
    # 加载工作本
    workbook = openpyxl.load_workbook(path)
    # 获得所有sheet标签页
    sheet_names = workbook.get_sheet_names()
    print(sheet_names)
    输出
    ['zszxz']
    
    正确的获取方式
    # -*- coding: utf-8 -*-
    import openpyxl
    path = r'C:xxzszxz.xlsx'
    # 加载工作本
    workbook = openpyxl.load_workbook(path)
    # 获得所有标签页名称
    print(workbook.sheetnames)
    
    
    3.4 获取指定标签页对象
    不建议通过方法获得标签页对象,建议通过属性方式获取;
    # -*- coding: utf-8 -*-
    import openpyxl
    path = r'C:xxzszxz.xlsx'
    # 加载工作本
    workbook = openpyxl.load_workbook(path)
    # 获得指定的sheet
    sheet = workbook.get_sheet_by_name('zszxz')
    print(sheet)
    输出
    <Worksheet "zszxz">
    
    正确的获取方式
    # -*- coding: utf-8 -*-
    import openpyxl
    path = r'C:xxzszxz.xlsx'
    # 加载工作本
    workbook = openpyxl.load_workbook(path)
    # 获取sheet对象
    sheet = workbook['zszxz']
    print(sheet)
    输出
    <Worksheet "zszxz">
    ==>>注:也可以通过循环工作本方式获取sheet
    
    
    3.5 复制sheet
    在已有的sheet上可以进行复制一个副本;
    # -*- coding: utf-8 -*-
    import openpyxl
    path = r'C:xxzszxz.xlsx'
    # 加载工作本
    workbook = openpyxl.load_workbook(path)
    # 获取sheet对象
    sheet = workbook['zszxz']
    # 复制sheet
    cp_sheet = workbook.copy_worksheet(sheet)
    print(cp_sheet)
    输出
    <Worksheet "zszxz Copy">
    
    3.5 获取指定一个单元格对象
    指定获取A1单元格对象
    # -*- coding: utf-8 -*-
    import openpyxl
    path = r'C:xxzszxz.xlsx'
    # 加载工作本
    workbook = openpyxl.load_workbook(path)
    # 获取sheet对象
    sheet = workbook['zszxz']
    # 获取指定单元格
    cell = sheet['A1']
    print(cell)
    输出
    <Cell 'zszxz'.A1>
    
    方式二
    # -*- coding: utf-8 -*-
    import openpyxl
    path = r'C:xxzszxz.xlsx'
    # 加载工作本
    workbook = openpyxl.load_workbook(path)
    # 获取sheet对象
    sheet = workbook['zszxz']
    # 获取指定单元格
    cell = sheet.cell(row=1, column=1)
    print(cell)
    输出
    <Cell 'zszxz'.A1>
    
    
    3.6 访问多个单元格
    访问单元格获取单元格对象;
    # -*- coding: utf-8 -*-
    import openpyxl
    path = r'C:xxzszxz.xlsx'
    # 加载工作本
    workbook = openpyxl.load_workbook(path)
    # 获取sheet对象
    sheet = workbook['zszxz']
    cells_range = sheet['A1':'C1']
    for cells in cells_range:
      for cell in cells:
        print(cell)
    输出
    <Cell 'zszxz'.A1>
    <Cell 'zszxz'.B1>
    <Cell 'zszxz'.C1>
    
    方式二
    # -*- coding: utf-8 -*-
    import openpyxl
    path = r'C:xxzszxz.xlsx'
    # 加载工作本
    workbook = openpyxl.load_workbook(path)
    # 获取sheet对象
    sheet = workbook['zszxz']
    # 获取指定范围的行
    row = sheet.iter_rows(min_row=1, max_col=3, max_row=1)
    for cell in row:
        print(cell)
    输出
    (<Cell 'zszxz'.A1>, <Cell 'zszxz'.B1>, <Cell 'zszxz'.C1>)
    sheet.iter_cols(min_row, max_col, max_row)通用的
    
    
    3.7 获取全部行
    # -*- coding: utf-8 -*-
    import openpyxl
    path = r'C:xxzszxz.xlsx'
    # 加载工作本
    workbook = openpyxl.load_workbook(path)
    # 获取sheet对象
    sheet = workbook['zszxz']
    # 获取所有行
    for row in sheet.rows:
      print(row)
    输出
    (<Cell 'zszxz'.A1>, <Cell 'zszxz'.B1>, <Cell 'zszxz'.C1>)
    (<Cell 'zszxz'.A2>, <Cell 'zszxz'.B2>, <Cell 'zszxz'.C2>)
    (<Cell 'zszxz'.A3>, <Cell 'zszxz'.B3>, <Cell 'zszxz'.C3>)
    (<Cell 'zszxz'.A4>, <Cell 'zszxz'.B4>, <Cell 'zszxz'.C4>)
    (<Cell 'zszxz'.A5>, <Cell 'zszxz'.B5>, <Cell 'zszxz'.C5>)
    (<Cell 'zszxz'.A6>, <Cell 'zszxz'.B6>, <Cell 'zszxz'.C6>)
    (<Cell 'zszxz'.A7>, <Cell 'zszxz'.B7>, <Cell 'zszxz'.C7>)
    同理 sheet.columns获取所有列
    
    
    3.8 获取值
    cell.value获取属性值
    # -*- coding: utf-8 -*-
    import openpyxl
    path = r'C:xxzszxz.xlsx'
    # 加载工作本
    workbook = openpyxl.load_workbook(path)
    # 获取sheet对象
    sheet = workbook['zszxz']
    cells_range = sheet['A1':'C1']
    for cells in cells_range:
      for cell in cells:
       # 获取属性值
        print(cell.value)
    输出
    id
    num
    name
    
    
    四 写入 excel
    4.1 写入文本
    # -*- coding: utf-8 -*-
    import openpyxl
    path = r'C:xxzszxz_write.xlsx'
    # 创建一个工作本
    workbook = openpyxl.Workbook()
    # 创建一个 sheet
    sheet = workbook.create_sheet('zszxz')
    # 写入文本形式
    sheet['A1'] = 'zszxz666'
    # 读取
    print(sheet['A1'].value)
    # 保存
    workbook.save(path)
    输出
    zszxz666
    
    
    4.2 写入数字
    # -*- coding: utf-8 -*-
    import openpyxl
    import datetime
    path = r'C:xxzszxz_write.xlsx'
    # 创建一个工作本
    workbook = openpyxl.Workbook()
    # 创建一个 sheet
    sheet = workbook.create_sheet('zszxz')
    # 写入值数字形式
    sheet['A2'] = datetime.datetime(2010, 7, 21)
    print(sheet['A2'].value)
    # 保存
    workbook.save(path)
    输出
    2010-07-21 00:00:00
    
    4.3 写入公式
    # -*- coding: utf-8 -*-
    import openpyxl
    path = r'C:xxzszxz_write.xlsx'
    # 创建一个工作本
    workbook = openpyxl.Workbook()
    # 创建一个 sheet
    sheet = workbook.create_sheet('zszxz')
    # 写入公式
    sheet['A3'] = '=SUM(1, 1)'
    print(sheet['A3'].value)
    # 保存
    workbook.save(path)
    输出
    =SUM(1, 1)
    实际中A3单元格值为2
    
    
    4.4 合并单元格
    # -*- coding: utf-8 -*-
    import openpyxl
    path = r'C:xxzszxz_write.xlsx'
    # 创建一个工作本
    workbook = openpyxl.Workbook()
    # 创建一个 sheet
    sheet = workbook.create_sheet('zszxz')
    # 合并单元格
    sheet.merge_cells('A2:D2')
    # 保存
    workbook.save(path)
    
    4.4.1取消合并单元格
    # -*- coding: utf-8 -*-
    import openpyxl
    path = r'C:xxzszxz_write.xlsx'
    # 创建一个工作本
    workbook = openpyxl.Workbook()
    # 创建一个 sheet
    sheet = workbook.create_sheet('zszxz')
    # 取消合并单元格
    sheet.unmerge_cells('A2:D2')
    # 保存
    workbook.save(path)
    
    
    4.5 插入图片
    # -*- coding: utf-8 -*-
    import openpyxl
    from openpyxl.drawing.image import Image
    path = r'C:xxzszxz_write.xlsx'
    # 创建一个工作本
    workbook = openpyxl.Workbook()
    # 创建一个 sheet
    sheet = workbook.create_sheet('zszxz')
    # 设置图像
    img = Image(r'C:xxmain.jpg')
    # 设置图像单元格说明
    sheet['A1'] = 'you are my angel'
    # 插入图片
    sheet.add_image(img, 'A1')
    # 保存
    workbook.save(path)
    
    
     
    
    4.6 隐藏轮廓
    # -*- coding: utf-8 -*-
    import openpyxl
    path = r'C:xxzszxz_write.xlsx'
    wb = openpyxl.Workbook()
    ws = wb.create_sheet()
    # 隐藏行 A-B
    ws.column_dimensions.group('A', 'B', hidden=True)
    # 隐藏 列 1 -5 
    ws.row_dimensions.group(1, 5, hidden=True)
    wb.save(path)
    
    4.7 设置行高列高
    # -*- coding: utf-8 -*-
    import openpyxl
    path = r'C:xxzszxz_write.xlsx'
    # 创建一个工作本
    workbook = openpyxl.Workbook()
    # 创建一个 sheet
    sheet = workbook.create_sheet('zszxz')
    # 写入文本形式
    sheet['A1'] = 'zszxz666'
    # 设置行高
    sheet.row_dimensions[1].height = 50
    # 设置列高
    sheet.column_dimensions['A'].width = 30
    workbook.save(path)
    
    五 删除sheet
    # -*- coding: utf-8 -*-
    import openpyxl
    path = r'C:xxzszxz_write.xlsx'
    # 加载工作本
    workbook = openpyxl.load_workbook(path)
    # 获得sheet
    sheet = workbook['Sheet']
    # 移除sheet
    workbook.remove(sheet)
    # 保存
    workbook.save(path)
    
    六 更新工作表
    # -*- coding: utf-8 -*-
    import openpyxl
    path = r'C:xxzszxz_write.xlsx'
    # 加载工作本
    workbook = openpyxl.load_workbook(path)
    # 获得sheet
    sheet = workbook['zszxz']
    # 获得值
    val = sheet['A1'].value
    print(val)
    # 重新赋值
    new_val = sheet['A1'].value = 'zszxz'
    print(new_val)
    # 保存
    workbook.save(path)
    
    
    # -*- coding: utf-8 -*-
    import openpyxl
    path = r'C:xxzszxz_write.xlsx'
    # 加载工作本
    workbook = openpyxl.load_workbook(path)
    # 获得sheet
    sheet = workbook['zszxz']
    # 获得值
    val = sheet['A1'].value
    print(val)
    # 重新赋值
    new_val = sheet['A1'].value = 'zszxz'
    print(new_val)
    # 保存
    workbook.save(path)
    输出
    zszxz666
    zszxz
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  • 原文地址:https://www.cnblogs.com/QiKa/p/13969835.html
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