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[英]Import multiple csv files into pandas and concatenate into one DataFrame where 1st column same in all csv and no headers of data just file name
[英]How do I concatenate files that have multiple sheets with same column headers but randomly ordered in Python/Pandas?
我有 3 个 xls 文件,每个文件有 3 张。 所有工作表都有相同的列标题,但如下所示的顺序不同
1.xls
Name Address Date City State Zip
2.xls
Address Date City Zip Name State
3.xls
City Zip Name Address Date State
我希望我的最终 xls 文件连接所有 3 个文件和工作表
Output.xls
Name Address Date City State Zip RowNumber SheetName
rownumber 应该是来自每个文件的特定行号,并且在连接之前数据来自工作表。Sheetname 应该是它来自 xls 文件中的工作表。
我的尝试-
import os
import pandas as pd
#set src directory
os.chdir('C:/Users/hhh/Desktop/python/Concat')
def read_sheets(filename):
result = []
sheets = pd.read_excel(filename, sheet_name=None)
for name, sheet in sheets.items():
sheet['Sheetname'] = name
sheet['Row'] = sheet.index
result.append(sheet)
return pd.concat(result, ignore_index=True)
files = [file for file in os.listdir(folder_path) if file.endswith(".xls")]
dfoo = read_sheets(files)
但什么也没发生,我只是收到一个断言错误,说 assert content_or_path is not None。 这是因为列顺序不匹配吗? 有解决方法吗? 所有文件和工作表中的列数都相同。 在每个文件表中都有相同的顺序。 但是,如果您将 1.xls 工作表与 2.xls 进行比较,则列顺序会有所不同,正如您在上面的 reprex 中看到的那样
我相信您的问题是要求获取 9 个不同的工作表(3 个不同的 .xls 文件中的每个 3 个)并将它们合并到新电子表格 Output.xls 中的一个工作表中。
一些评论开始:
FutureWarning:
As the xlwt package is no longer maintained, the xlwt engine will be removed in a future version of pandas.
This is the only engine in pandas that supports writing in the xls format.
Install openpyxl and write to an xlsx file instead.
You can set the option io.excel.xls.writer to 'xlwt' to silence this warning.
While this option is deprecated and will also raise a warning, it can be globally set and the warning suppressed.
writer = pd.ExcelWriter('Output.xls')
这是对您的代码的修改,它可以满足您的要求(对 os.chdir() 使用不同的参数以匹配我的测试环境):
import os
import pandas as pd
#set src directory
#os.chdir('C:/Users/hhh/Desktop/python/Concat')
os.chdir('./Concat')
def read_sheets(files):
result = []
for filename in files:
sheets = pd.read_excel(filename, sheet_name=None)
for name, sheet in sheets.items():
sheet['Sheetname'] = name
sheet['Row'] = sheet.index
result.append(sheet)
return pd.concat(result, ignore_index=True)
folder_path = '.'
files = [file for file in os.listdir(folder_path) if file.endswith(".xls")]
dfCombined = read_sheets(files)
writer = pd.ExcelWriter('Output.xls')
dfCombined.to_excel(writer, index=None, sheet_name='Combined')
writer.save()
writer.close()
样本 output 如下所示:
Name Address Date City State Zip Sheetname Row
Alice 1 Main St 11 Nome Alaska 11111 Sheet1 0
Bob 1 Main St 12 Providence Rhode Island 22222 Sheet1 1
Candace 1 Main St 13 Denver Colorado 33333 Sheet1 2
Dirk 1 Main St 14 Wilmington Delaware 44444 Sheet1 3
Edward 1 Marvin Gardens 11 Nome Alaska 11111 Sheet2 0
Fran 1 Marvin Gardens 12 Providence Rhode Island 22222 Sheet2 1
George 1 Marvin Gardens 13 Denver Colorado 33333 Sheet2 2
Hannah 1 Marvin Gardens 14 Wilmington Delaware 44444 Sheet2 3
Irvin 1 St Marks Place 11 Nome Alaska 11111 Sheet3 0
Jasmine 1 St Marks Place 12 Providence Rhode Island 22222 Sheet3 1
Kirk 1 St Marks Place 13 Denver Colorado 33333 Sheet3 2
Lana 1 St Marks Place 14 Wilmington Delaware 44444 Sheet3 3
Alice 2 Main St 11 Nome Alaska 11111 Sheet1 0
Bob 2 Main St 12 Providence Rhode Island 22222 Sheet1 1
Candace 2 Main St 13 Denver Colorado 33333 Sheet1 2
Dirk 2 Main St 14 Wilmington Delaware 44444 Sheet1 3
Edward 2 Marvin Gardens 11 Nome Alaska 11111 Sheet2 0
Fran 2 Marvin Gardens 12 Providence Rhode Island 22222 Sheet2 1
George 2 Marvin Gardens 13 Denver Colorado 33333 Sheet2 2
Hannah 2 Marvin Gardens 14 Wilmington Delaware 44444 Sheet2 3
Irvin 2 St Marks Place 11 Nome Alaska 11111 Sheet3 0
Jasmine 2 St Marks Place 12 Providence Rhode Island 22222 Sheet3 1
Kirk 2 St Marks Place 13 Denver Colorado 33333 Sheet3 2
Lana 2 St Marks Place 14 Wilmington Delaware 44444 Sheet3 3
Alice 3 Main St 11 Nome Alaska 11111 Sheet1 0
Bob 3 Main St 12 Providence Rhode Island 22222 Sheet1 1
Candace 3 Main St 13 Denver Colorado 33333 Sheet1 2
Dirk 3 Main St 14 Wilmington Delaware 44444 Sheet1 3
Edward 3 Marvin Gardens 11 Nome Alaska 11111 Sheet2 0
Fran 3 Marvin Gardens 12 Providence Rhode Island 22222 Sheet2 1
George 3 Marvin Gardens 13 Denver Colorado 33333 Sheet2 2
Hannah 3 Marvin Gardens 14 Wilmington Delaware 44444 Sheet2 3
Irvin 3 St Marks Place 11 Nome Alaska 11111 Sheet3 0
Jasmine 3 St Marks Place 12 Providence Rhode Island 22222 Sheet3 1
Kirk 3 St Marks Place 13 Denver Colorado 33333 Sheet3 2
Lana 3 St Marks Place 14 Wilmington Delaware 44444 Sheet3 3
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