编写数据框字典以分隔 Excel 工作表

Question

我有一个字典，其中包含“data.csv”中每个状态的数据框。

df=pd.read_csv('data.csv')

dict_of_st = {k: v for k, v in df.groupby('Preferred State/Province')}

我想将每个数据框写入已经存在的工作簿（'test.xlsx'）中的单独 excel 表。

我尝试使用 for 循环和 load workbook

from openpyxl import load_workbook

book = load_workbook('test.xlsx')
writer = pd.ExcelWriter('test.xlsx', engine='openpyxl') 
writer.book = book
writer.sheets = dict((ws.title, ws) for ws in book.worksheets)

for i in dict_of_st:
    i.to_excel(writer, sheet_name=i)

writer.save()

但是 jupyter notebook 引发了这个错误：

AttributeError                            Traceback (most recent call last)
<ipython-input-8-c1ba1b4d53d8> in <module>
      7 
      8 for i in dict_of_st:
----> 9     i.to_excel(writer, sheet_name=i)
     10 
     11 writer.save()

AttributeError: 'str' object has no attribute 'to_excel'

Answer 1

for x in some_dict迭代键。您应该显式迭代items()哪些返回键值对：

for df_name, df in dict_of_st.items():
    df.to_excel(writer, sheet_name=df_name)