pandas如何統計excel中列數據的行數？

準備測試數據：

測試數據

打開PyCharm輸入以下代碼

程序代碼

運行效果如下：

運行效果展示

附上實現代碼：

#!/usr/bin/env python

import pandas as pd

OPENPATH = 'test.xls'

SAVEPATH = 'test1.xls'

def total_count(path=OPENPATH, sheetname='testsheet'):

df = pd.read_excel(path, sheet_name=sheetname, names=['值', '計數'])

# 獲取統計項目

item_name = set(df['值'])

# 創建字典統計

total_dict = dict(zip([i for i in item_name], [

0 for _ in range(len(item_name))]))

# 遍歷”值“列，逐個統計數量

for index, item in enumerate(df['值']):

# 如果在set中

if item in item_name:

# 加入計數統計

total_dict[item] += df['計數'][index]

# 返回

return total_dict

def datato_excel(path=SAVEPATH, sheet_name='total', data_dict={}):

report_df = pd.DataFrame.from_dict(data_dict,orient='index')

xl_writer = pd.ExcelWriter(path)

report_df.to_excel(xl_writer, sheet_name)

try:

xl_writer.save()

print('Save completed')

except:

print('Error in saving file')

if __name__ == "__main__":

datato_excel(data_dict=total_count())

不知道這是不是您想要的結果，如果有幫助，請采納壹下，謝謝！