我正在努力完成我的计划。我正在使用 tkinter OpenFileDialog (AskOpenFile) 打开 .txt 文件并绘制它。我需要一次打开多个文件并使用这些文件。我的函数 AskOpenFile 运行良好，但我想使用 AskOpenFiles 函数，这样我就可以同时处理多个文件。从多个 .txt 文件中创建一个图。有人可以帮我吗？我收到以下消息： Tkinter 回调中出现异常 回溯（最近一次调用最后一次）：
File "C:\Users\m.salik\AppData\Local\Programs\Python\Python312\Lib\tkinter\__init__.py", line 1962, in __call__
return self.func(*args)
^^^^^^^^^^^^^^^^
File "C:\Users\m.salik\PycharmProjects\pythonProject\Polycontact\GUI_main.py", line 95, in select_file
Analysis_frame.analysis(self)
File "C:\Users\m.salik\PycharmProjects\pythonProject\Polycontact\GUI_main.py", line 19, in analysis
data = pd.read_csv(data_raw, sep=";", skiprows=[0], low_memory=False)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\m.salik\PycharmProjects\pythonProject\.venv\Lib\site-packages\pandas\io\parsers\readers.py", line 948, in read_csv
return _read(filepath_or_buffer, kwds)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\m.salik\PycharmProjects\pythonProject\.venv\Lib\site-packages\pandas\io\parsers\readers.py", line 611, in _read
parser = TextFileReader(filepath_or_buffer, **kwds)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\m.salik\PycharmProjects\pythonProject\.venv\Lib\site-packages\pandas\io\parsers\readers.py", line 1448, in __init__
self._engine = self._make_engine(f, self.engine)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\m.salik\PycharmProjects\pythonProject\.venv\Lib\site-packages\pandas\io\parsers\readers.py", line 1720, in _make_engine
raise ValueError(msg)
ValueError: Invalid file path or buffer object type: <class 'list'>
我的代码：
```` import tkinter as tk
from tkinter import *
from tkinter import messagebox
from tkinter import filedialog as fd
import pandas as pd
import matplotlib.pyplot as plt
class Analysis_frame(tk.LabelFrame):
def __init__(self, container):
super().__init__(container)
self.configure(text="Analysis", relief="ridge", font=("Verdana", 10), borderwidth=1, border=3)
self.__create_widgets()
def analysis(self):
global Test_Start, Test_End, Duration, Duration_End, Temperature, MinTemp, MaxTemp, Start_Time, End_Time
global Current_IN_max, Current_IN_min, MaxValue_I_IN_max, MinValue_I_IN_max
global data
data = pd.read_csv(data_raw, sep=";", skiprows=[0], low_memory=False)
# print(data_raw.columns)
Test_Start = data.iloc[:, 0].values[0]
Test_End = data.iloc[:, 0].values[-1]
Start_Time = data.iloc[:, 1].values[0]
End_Time = data.iloc[:, 1].values[-1]
Duration = data.iloc[:, 3]
Duration_End = data.iloc[:, 3].values[-1]
Temperature = data.iloc[:, 4]
MinTemp = Temperature.min()
MaxTemp = Temperature.max()
Humidity = data.iloc[:, 5]
Supply_IN_max = data.iloc[:, 8]
Supply_IN_min = data.iloc[:, 9]
Current_IN_max = data.iloc[:, 12]
Current_IN_min = data.iloc[:, 13]
Voltage_OUT_max = data.iloc[:, 20]
pd.set_option("display.max_rows", 20000)
##### Temperature diagram #####
def __create_plot_temp(self):
fig, ax1 = plt.subplots(facecolor="white", figsize=(17,10), dpi=100)
ax1.set_title("Temperature diagram", font="Verdana", fontsize=11)
ax1.set_facecolor("whitesmoke")
plt.subplots_adjust(left=0.05, right=0.95, top=0.98, bottom=0.15)
ax1.set_ylim(bottom=0, top=1)
ax1.set_xlim(0,Duration_End)
ax2 = ax1.twinx()
ax2.set_ylim(bottom=MinTemp-10, top=MaxTemp+15)
ax1.minorticks_on()
plt.minorticks_on()
ax1.set_ylabel("Current [A]").set_fontsize(10)
ax2.set_ylabel("Temperature [°C]").set_fontsize(10)
ax1.set_xlabel("Test duration [h]").set_fontsize(10)
sample1, = ax1.plot(Duration, Current_IN_max, label="IGSS1", color="green", marker=".", markersize=2,
mouseover=True, linewidth=0.2, visible=True, alpha=0.5)
sample2, = ax1.plot(Duration, Current_IN_min, label="IGSS2", color="orange", marker=".", markersize=2,
mouseover=True, linewidth=0.2, visible=True, alpha=0.5)
temp, = ax2.plot(Duration, Temperature, label="Temperature", color="red", linewidth=0.8, alpha=0.7)
plt.figtext(0.05,0.10,f"Test start: {Test_Start +" "+ Start_Time}", fontfamily="verdana", fontsize=10)
plt.figtext(0.85,0.10, f"Test end: {Test_End +" "+ End_Time}", fontfamily="verdana", fontsize=10)
plt.show()
def __create_widgets(self):
tk.Button(self, text="Temperature" "\n" "diagram", font=("Verdana", 8), command=self.__create_plot_temp).grid(
column=0, row=0, sticky=tk.S)
for widget in self.winfo_children(): # spacings for all widgets within the frame
widget.grid(padx=5, pady=5)
class Button_frame(tk.LabelFrame): # create frame
def __init__(self, container):
super().__init__(container)
self.configure(text="Files", font=("Verdana", 10), relief="ridge", borderwidth=1, border=3)
self.__create_widgets()
def select_file(self): # function for opening the csv files, command for open_file button
global data_raw
filetypes = (
("textfiles", ".txt"),
)
file = fd.askopenfiles(
filetypes=filetypes,
mode="r+",
title="Open file",
initialdir="/",
)
if file is not None:
data_raw = file
Analysis_frame.analysis(self)
messagebox.showinfo("Data", "Data loaded succesfull!")
else:
messagebox.showinfo("Data", "No data loaded!")
def __create_widgets(self): # create buttons within the frame
open_file = tk.Button(self, text="Open csv file", font=("Verdana", 8), command=self.select_file)
open_file.grid(column=0, row=0, sticky=N)
exit = tk.Button(self, text="Close", font=("Verdana", 8), command=quit)
exit.grid(column=1, row=0, sticky=N)
for widget in self.winfo_children(): # spacings for all widgets within the frame
widget.grid(padx=5, pady=5)
class Main_window(tk.Tk):
def __init__(self):
super().__init__()
self.title("Analysis")
self.geometry("600x500")
#self.attributes("-toolwindow", True)
self.__create_widgets()
def __create_widgets(self):
analysis = Analysis_frame(self)
analysis.grid(column=0, row=2, sticky=NW)
buttons = Button_frame(self)
buttons.grid(column=0, row=1, sticky=NW)
for widget in self.winfo_children(): # spacings for all widgets within the main window
widget.grid(padx=5, pady=5)
if __name__ == "__main__":
app = Main_window()
app.mainloop()```
问题在这里：
file = fd.askopenfiles(
filetypes=filetypes,
mode="r+",
title="Open file",
initialdir="/",
)
askopenfileslistValueError: Invalid file path or buffer object type: <class 'list'>
如果要依次打开并处理选定的文件，则需要像这样迭代
askopenfilesdef select_file(self):
global data_raw
filetypes = ("textfiles", ".txt")
files = fd.askopenfiles( # changed this to 'files' since it's a list of multiple files
filetypes=filetypes,
mode="r+",
title="Open file",
initialdir="/",
)
for file in files: # iterate over the list of files
if file is not None:
data_raw = file
Analysis_frame.analysis(self)
messagebox.showinfo("Data", "Data loaded succesfull!")
else:
messagebox.showinfo("Data", "No data loaded!")