如何将DataFrame列表导出到一个Excel电子表格中?
to_excel
州的文档:
注释
如果传递现有的ExcelWriter对象,则将添加工作表 到现有的工作簿。这可以用来保存不同的 DataFrames到一个工作簿
writer = ExcelWriter('output.xlsx')
df1.to_excel(writer, 'sheet1')
df2.to_excel(writer, 'sheet2')
writer.save()
在此之后,我想我可以编写一个函数,将一个DataFrame列表保存到一个电子表格中,如下所示:
from openpyxl.writer.excel import ExcelWriter
def save_xls(list_dfs, xls_path):
writer = ExcelWriter(xls_path)
for n, df in enumerate(list_dfs):
df.to_excel(writer,'sheet%s' % n)
writer.save()
但是(包含两个小型DataFrame的列表,每个都可以单独保存to_excel
),会引发异常(编辑:删除跟踪):
AttributeError: 'str' object has no attribute 'worksheets'
据推测,我没有正确地呼叫ExcelWriter
,我应该怎么做才能做到这一点?
答案 0 :(得分:100)
您应该使用pandas自己的ExcelWriter
类:
from pandas import ExcelWriter
# from pandas.io.parsers import ExcelWriter
然后save_xls
函数按预期工作:
def save_xls(list_dfs, xls_path):
with ExcelWriter(xls_path) as writer:
for n, df in enumerate(list_dfs):
df.to_excel(writer,'sheet%s' % n)
writer.save()
答案 1 :(得分:1)
万一有人需要使用数据帧字典的示例:
from pandas import ExcelWriter
def save_xls(dict_df, path):
"""
Save a dictionary of dataframes to an excel file, with each dataframe as a seperate page
"""
writer = ExcelWriter(path)
for key in dict_df:
dict_df[key].to_excel(writer, key)
writer.save()
示例:
save_xls(dict_df = my_dict, path = '~/my_path.xls')
答案 2 :(得分:0)
如果数据框中存在某些不支持的字符类型,有时可能会出现问题(编写包含unicode的excel文件)。为了克服这个问题,我们可以使用“ xlsxwriter ”包,如下所示:
以下代码:
from pandas import ExcelWriter
import xlsxwriter
writer = ExcelWriter('notes.xlsx')
for key in dict_df:
data[key].to_excel(writer, key,index=False)
writer.save()
我收到了错误信息“ IllegalCharacterError”
有效的代码:
%pip install xlsxwriter
from pandas import ExcelWriter
import xlsxwriter
writer = ExcelWriter('notes.xlsx')
for key in dict_df:
data[key].to_excel(writer, key,index=False,engine='xlsxwriter')
writer.save()