两个案例+xlwings

 案例一  把文件夹名字整理到Excel里
import os
import xlwt
file_path = 'd:/'
# 取出目标文件夹下的文件名
os.listdir(file_path)
# 新建工作簿，sheet
new_workbook = xlwt.Workbook()
sheet = new_workbook.add_sheet('new_dir')
# 取出文件名，依次写入
n = 0
for i in os.listdir(file_path):
    sheet.write(n,0,i)
    n += 1
new_workbook.save('dir.xls')

案例二  用Excel作画，将一张图以图块的形式输出到Excel

from PIL import Image
from xlsxwriter.workbook import Workbook

class ExcelPicture(object):
    FORMAT_CONSTRAINT = 65536

    def __init__(self, pic_file, ratio=0.5):
        self.__pic_file = pic_file

        self.__ratio = ratio
        self.__zoomed_out = False

        self.__formats = dict()

    # 缩小图片
    def zoom_out(self, _img):
        _size = _img.size
        _img.thumbnail((int(_img.size[0] * self.__ratio), int(_img.size[1] * self.__ratio)))

        self.__zoomed_out = True

    # 对颜色进行圆整
    def round_rgb(self, rgb, model):
        return tuple([int(round(x / model) * model) for x in rgb])

    # 查找颜色样式，去重
    def get_format(self, color):
        _format = self.__formats.get(color, None)

        if _format is None:
            _format = self.__wb.add_format({'bg_color': color})
            self.__formats[color] = _format

        return _format

    # 操作流程
    def process(self, output_file='_pic.xlsx', color_rounding=False, color_rounding_model=5.0):
        # 创建xlsx文件，并调整行列属性
        self.__wb = Workbook(output_file)
        self.__sht = self.__wb.add_worksheet()
        self.__sht.set_default_row(height=9)
        self.__sht.set_column(0, 5000, width=1)

        # 打开需要进行转换的图片
        _img = Image.open(self.__pic_file)
        print('Picture filename:', self.__pic_file)

        # 判断是否需要缩小图片尺寸
        if self.__ratio < 1:
            self.zoom_out(_img)

        # 遍历每一个像素点，并填充对应的颜色到对应的Excel单元格
        _size = _img.size
        print('Picture size:', _size)
        for (x, y) in [(x, y) for x in range(_size[0]) for y in range(_size[1])]:
            _clr = _img.getpixel((x, y))

            # 如果颜色种类过多，则需要将颜色圆整到近似的颜色上，以减少颜色种类
            if color_rounding: _clr = self.round_rgb(_clr, color_rounding_model)

            _color = '#%02X%02X%02X' % _clr
            self.__sht.write(y, x, '', self.get_format(_color))

        self.__wb.close()

        # 检查颜色样式种类是否超出限制，Excel2007对样式数量有最大限制
        format_size = len(self.__formats.keys())
        if format_size >= ExcelPicture.FORMAT_CONSTRAINT:
            print('Failed! Color size overflow: %s.' % format_size)
        else:
            print('Success!')
            print('Color: %s' % format_size)
            print('Color_rounding:', color_rounding)
            if color_rounding:
                print('Color_rounding_model:', color_rounding_model)


if __name__ == '__main__':
    r = ExcelPicture('wallhaven-l317xp.jpg', ratio=0.5)     # 图片放在同级目录
    r.process('wallhaven-l317xp.xlsx', color_rounding=True, color_rounding_model=5.0)
#
#
# # pandas_数据透视表
#
import pandas as pd
import numpy as np

r_file = pd.ExcelFile('student.xls')
data = r_file.parse('Sheet1')
print(data)
# index代表行，columns代表列
# aggfunc = np.sum 求和
# margins=True 总计
pt_s = pd.pivot_table(data, index=['省份'], aggfunc = np.sum, margins=True)  # aggfunc = np.sum 求和，默认为平均值
# 全部显示行和列
pt_s.set_option('display.max_rows', None)
pt_s.set_option('display.max_columns', None)
# 求各省的个数
pt_n = pd.pivot_table(data, index=['省份'], aggfunc=np.size, margins=True) # aggfunc=np.sum  求和，默认是平均值
print(pt_s.iat[0, 0])
print(pt_n.iat[0, 0])

import os
path = 'example.xlsx'
separate = os.path.splitext(path)
print(separate)
'''
#  利用xlwings创建空工作簿并关闭
import xlwings as xw
app = xw.App(visible=True,add_book=False)
workbook = app.books.add()
workbook.save('d:\\example.xlsx')
workbook.close()  # 关闭工作簿
app.quit()  # 退出Excel程序

# 打开已有工作簿
import xlwings as xw
app = xw.App(visible=True,add_book=False)
workbook = app.books.open(r'd:\example.xlsx')  # 打开D盘根文件夹下工作簿
'''

'''
# 案例1
import xlwings as xw
app = xw.App(visible=True)
workbook = app.books.add()
worksheet = workbook.sheets.add('产品统计表')
worksheet.range('A1').value = '编号'
workbook.save(r'd:\beijing.xlsx')
workbook.close()
app.quit()

# 案例2

# 操控工作表和单元格
worksheet = workbook.sheets['Sheets']  # 选中工作表
worksheet.range('A1').value = '编号' # 在单元格A1中输入编号
worksheet = workbook.sheets.add('产品统计')  #新增一个工作表，名称为“产品统计“

import xlwings as xw
app = xw.App(visible = False)
workbook = app.books.add()
worksheet = workbook.sheets.add('产品统计表')
worksheet.range('A1').value = '编号'
workbook.save(r'd:\统计x.xlsx')
workbook.close
app.quit
'''

标签：.__,两个,format,color,self,xlwings,案例,workbook,size
来源： https://www.cnblogs.com/chengfo/p/16528024.html