python - Tkinter和openpyxl错误没有这样的文件或目录''

我有一个程序，使用tkinter和openpyxl制作一个excel比较程序。这是我的代码：

import openpyxl, csv
from tkinter import *
from tkinter.filedialog import askopenfilename
from openpyxl.utils import get_column_letter, column_index_from_string

output = open('differences.csv', 'w', newline='')
output_writer = csv.writer(output)

wb1, wb2 = '', ''
sheet1, sheet2 = '', ''
column_1, column_2 = '', ''

root = Tk()
root.configure(background='light green')
root.geometry("500x500")
root.wm_title("BananaCell")

e1 = Text(root, width=15, height=1)
e1.pack()
e1.place(x=70, y=150)

e2 = Text(root, width=15, height=1)
e2.pack()
e2.place(x=300, y=150)

column1_entry = Text(root, width=5, height=1)
column1_entry.pack()
column1_entry.place(x=135, y=250)

column2_entry = Text(root, width=5, height=1)
column2_entry.pack()
column2_entry.place(x=385, y=250)


def destroy():
    root.destroy()


def ask_for_filename_1():
    global wb1
    wb1 = askopenfilename(title="Select Workbook 1")
    print(str(wb1))
    return wb1


def ask_for_filename_2():
    global wb2
    wb2 = askopenfilename(title="Select Workbook 1")
    print(str(wb2))
    return wb2


def ask_for_sheet1():
    global sheet1
    sheet1 = e1.get("1.0", "end-1c")
    print(sheet1)
    return sheet1


def ask_for_sheet2():
    global sheet2
    sheet2 = e2.get("1.0", "end-1c")
    print(sheet2)
    return sheet2


def get_col_1():
    global column_1
    c1 = column1_entry.get("1.0", "end-1c")
    print(c1)


def get_col_2():
    global column_2
    c2 = column2_entry.get("1.0", "end-1c")
    print(c2)

filename_button1 = Button(root, text="Workbook 1", width=12, height=2, command=ask_for_filename_1)
filename_button1.pack()
filename_button1.place(x=100, y=100)

filename_button2 = Button(root, text="Workbook 2", width=12, height=2,
 command=ask_for_filename_2)
filename_button2.pack()
filename_button2.place(x=300, y=100)

col_button1 = Button(root, text="Enter", width=5, height=1, command=get_col_1)
col_button1.pack()
col_button1.place(x=185, y=248)

col_button2 = Button(root, text="Enter", width=5, height=1, command=get_col_2)
col_button2.pack()
col_button2.place(x=435, y=248)

col1 = column_1
col2 = column_2

sheet_button1 = Button(root, text="Enter", width=6, height=0,
command=ask_for_sheet1)
sheet_button1.pack()
sheet_button1.place(x=15, y=147)

sheet_button2 = Button(root, text="Enter", width=6, height=0, command=ask_for_sheet2)
sheet_button2.pack()
sheet_button2.place(x=430, y=147)

label1 = Label(root, text="Sheet 1 column letter: ", bg="light green")
label1.pack()
label1.place(x=10, y=250)

 label2 = Label(root, text="Sheet 2 column letter: ", bg = "light green")
label2.pack()
label2.place(x=260, y=250)


workbook1 = openpyxl.load_workbook(str(wb1))
workbook2 = openpyxl.load_workbook(str(wb2))

worksheet1 = workbook1.get_sheet_by_name(str(sheet1))
worksheet2 = workbook2.get_sheet_by_name(str(sheet2))

col1 = column_1
col2 = column_2


def show():
    scrollbar = Scrollbar(root)
    scrollbar.pack(side=RIGHT, fill=Y)
    textbox = Text(root, wrap=WORD, yscrollcommand=scrollbar.set)
    textbox.pack()
    textbox.place(x=300, y=200)
    for (col, col_1) in zip(worksheet1.iter_cols(min_col = column_index_from_string(col1), max_col=column_index_from_string(col1)), worksheet2.iter_cols(min_col = column_index_from_string(col2), max_col=column_index_from_string(col2))):
        for (cell, cell_1) in zip(col, col_1):
           if cell.value != cell_1.value and cell.row == cell_1.row:
               textbox.insert(INSERT, 'Row ' + str(cell.row) + ' ' +
str(cell.value) + ' is not equal to ' + str(cell_1.value) + ' ' + 'Row ' + str(cell_1.row) + '\n')


def write_csv():
    for (col, col_1) in zip(worksheet1.iter_cols(min_col = column_index_from_string(col1), max_col=column_index_from_string(col1)), worksheet2.iter_cols(min_col = column_index_from_string(col2), max_col=column_index_from_string(col2))):
        for (cell, cell_1) in zip(col, col_1):
           if cell.value != cell_1.value and cell.row == cell_1.row:
               output_writer.writerow(['Sheet 1 value: ' + ' ' + str(cell.value) + '  ' + 'is not equal to ' + '  ' + 'Sheet 2 value:  ' + ' ' + str(cell_1.value) + ' ' + 'on row ' + ' ' + str(cell.row)])

show_button = Button(root, text="Show", width=8, height=1, command=show)
show_button.pack()
show_button.place(x=1, y=20)

button_export = Button(root, text="Export to CSV", width=10, height=1, command=write_csv)
button_export.pack()
button_export.place(x=450, y=60)

dButton = Button(root, text="Done", width=8, height=1, command=destroy)
dButton.pack()
dButton.place(x=100, y=60)

mainloop()

程序崩溃并给出以下错误：No such file or directory ''，我不确定它是否会完全按计划运行。有人能重写我的代码使其顺利编译吗？一切都很好

最佳答案

从您的代码中我可以看到，问题是因为您没有实际地将文件名添加到要使用的变量中。
因此，当程序到达workbook1、workbook2、worksheet1和worksheet2所在的行时，程序将在创建变量openpyxl.load_workbook(str(wb1))、wb1、wb2、wb1和sheet1之前尝试运行命令sheet2。在创建以下内容之前，需要具有要求将文件名分配给要调用的变量的函数：

workbook1 = openpyxl.load_workbook(str(wb1))
workbook2 = openpyxl.load_workbook(str(wb2))

worksheet1 = workbook1.get_sheet_by_name(str(sheet1))
worksheet2 = workbook2.get_sheet_by_name(str(sheet2))

下面是一个例子，说明为了实现这一点，您可能需要做些什么。
这不是最好的方法，甚至不是一个好的方法，但它会很快满足你的需要，并举例说明你的工作手册和工作表需要什么来妥善处理。

def ask_for_filename_1():
    global wb1
    wb1 = askopenfilename(title="Select Workbook 1")
    print(str(wb1))
    return wb1

ask_for_filename_1() # add this line

def ask_for_filename_2():
    global wb2
    wb2 = askopenfilename(title="Select Workbook 1")
    print(str(wb2))
    return wb2

ask_for_filename_2() # add this line

在使用上述变量之前，您需要执行一个将文件名应用于变量的函数。
请记住，我给出的示例只是为了说明在对变量workbook1、workbook2、worksheet1和worksheet2执行任何操作之前需要执行的操作。您可能需要检查和更改代码，以便以后不再出现此问题。
可能添加此部分：

workbook1 = openpyxl.load_workbook(str(wb1))
workbook2 = openpyxl.load_workbook(str(wb2))

worksheet1 = workbook1.get_sheet_by_name(str(sheet1))
worksheet2 = workbook2.get_sheet_by_name(str(sheet2))

在创建每个wb1、wb2、wb1、sheet1和sheet2之后调用的函数。