嗨，这个问题与以下问题几乎完全相同：
不同之处在于我想从Excel文件列表中读取数据。我有一个名为“filenames”的文件名列表，我想将它们合并成一个数据框。
我的代码如下：
import tkinter as tk
import pandas as pd
import tkinter.messagebox as tr
from tkinter.filedialog import askopenfilename
LARGE_FONT = ("Verdana", 12)
class BlahTest(tk.Tk):
def __init__(self, *args, **kwargs):
tk.Tk.__init__(self, *args, **kwargs)
container = tk.Frame(self)
container.pack(side="top", fill="both", expand=True)
container.grid_rowconfigure(0, weight=1)
container.grid_columnconfigure(0, weight=1)
self.frames = {}
frame = StartPage(container, self)
self.frames[StartPage] = frame
frame.grid(row=0, column=0, sticky="nsew")
self.show_frame(StartPage)
def show_frame(self, cont):
frame = self.frames[cont]
frame.tkraise()
class StartPage(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self,parent)
label = tk.Label(self, text="Add files to start compiling your report", font=LARGE_FONT)
label.pack(pady=10,padx=10)
button1 = tk.Button(self, text="Add Files", command=FileOperations.openFile)
button1.pack()
class FileOperations():
def openFile():
options = {}
options['initialdir'] = 'C:\\Users\\Blah'
options['filetypes'] = [('Excel files', '.xlsx')]
options['multiple'] = 1
global filenames
filenames = tk.filedialog.askopenfilename(**options)
if len(filenames) == 8: #checks if the user has selected exactly 8 files else shows errormessage
PandasOperations.MergetoSingleDF
else:
tr.showerror("Wrong number of files","There should be exactly 8 files")
class PandasOperations():
def MergetoSingleDF():
df_list = [pd.read_excel((file), sheetname=0) for file in filenames]
big_df = pd.Dataframe()
big_df = pd.concat(df_list)
big_df
writer = pd.ExcelWriter('C:\\Users\\Blah.xlsx', engine = 'xlsxwriter')
big_df.to_excel(writer, sheet_name='Patch Summary by Server Report', index=False)
workbook = writer.book
worksheet = writer.sheets['Patch Summary by Server Report']
writer.save()
app = BlahTest()
app.mainloop()
我的代码应该： - 获取8个Excel文件的列表 - 将每个Excel文件加载到对应的数据帧中，并将这些数据帧存储在一个新列表中 - 合并整个数据帧列表为一个数据帧 - 打印出新的大数据帧 - 将新的大数据帧保存到一个Excel文件中
很抱歉它没有给我任何错误信息 - 它似乎只是没有打印出数据帧或将其保存到Excel。
任何帮助都将不胜感激。