Python - 需要類似字節的對象，而不是'str'

Question

我有一個簡單的Python代碼片段，它將宏Excel工作表複製到csvs中。這段代碼出於某種奇怪的原因而爆炸。我曾經運行這個片段Python 2.7，並沒有問題。我最近下載了Python 3.6。我該如何解決這個問題？

import csv 
import xlrd 

workbook = xlrd.open_workbook('P:/LFC Lots and Sales-NEW.xlsm') 
for sheet in workbook.sheets(): 
with open('{}.csv'.format(sheet.name), 'wb') as f: 
    writer = csv.writer(f) 
    writer.writerows(sheet.row_values(row) for row in range(sheet.nrows)) 
print ("Sheets copied") 

回溯：

writer.writerows(sheet.row_values(row) for row in range(sheet.nrows)) 
TypeError: a bytes-like object is required, not 'str' 

Answer 1

明白了！我所需要做的就是將wb更改爲w。

import csv 
import xlrd 

workbook = xlrd.open_workbook('P:/LFC Lots and Sales-NEW.xlsm') 
for sheet in workbook.sheets(): 
with open('{}.csv'.format(sheet.name), 'w') as f: 
    writer = csv.writer(f) 
    writer.writerows(sheet.row_values(row) for row in range(sheet.nrows)) 
print ("Sheets copied")