Python Tkinter：从CSV导入数据到OptionMenu显示异常求助

It looks like the problem stems from two key issues: how you're reading the CSV data into a list, and how you're passing that list to the OptionMenu constructor. Let's break down the fixes step by step.

1. Fix CSV Reading to Get a Flat List of Strings #

Right now, when you use csv.reader, each row is returned as a single-element list (since you wrote each club name as a single column). Using dummy_club.extend(reader) adds each of these lists to your dummy_club, resulting in a nested list like [['Club1'], ['Club2'], ...]. Instead, we need to extract the string from each row to create a flat list.

Option A: Fix with csv.reader #

import csv

with open('clubs.csv', newline='') as club:
    reader = csv.reader(club)
    dummy_club = []
    for row in reader:
        if row:  # Skip empty rows
            dummy_club.append(row[0])  # Extract the first (only) element from each row

Option B: Simplify by Reading Plain Lines #

Since you removed commas from club names, you can skip the CSV reader entirely and just read each line directly:

with open('clubs.csv', newline='') as club:
    dummy_club = [line.strip() for line in club if line.strip()]

2. Correctly Populate the OptionMenu #

The OptionMenu constructor expects the variable followed by the options as positional arguments. You were passing the list as a value keyword argument, which is incorrect. Instead, unpack the list using * to pass each element as a separate option.

from tkinter import Tk, StringVar, OptionMenu

app = Tk()
sv_club = StringVar()

# Set a default value if the list isn't empty
if dummy_club:
    sv_club.set(dummy_club[0])

# Create OptionMenu with unpacked list of options
d_club = OptionMenu(app, sv_club, *dummy_club)
d_club.pack()

app.mainloop()

Alternative: Add Options via the Menu (Consistent with Scrape Code) #

If you prefer to use the same approach as your scrape function (adding commands to the menu), you can initialize the OptionMenu with a placeholder value, then loop through your dummy_club list to add each option:

app = Tk()
sv_club = StringVar()

# Initialize OptionMenu with a default placeholder
d_club = OptionMenu(app, sv_club, "Select a Club")
d_club.pack()

# Get the menu widget from the OptionMenu
m_club = d_club.children['menu']

# Clear any existing default options (optional)
m_club.delete(0, 'end')

# Add each club from the CSV list
for val in dummy_club:
    m_club.add_command(label=val, command=lambda v=sv_club, l=val: v.set(l))

# Set default value if needed
if dummy_club:
    sv_club.set(dummy_club[0])

app.mainloop()

Why This Works #

• Fixing the CSV reading ensures you have a flat list of strings instead of nested lists, which Tkinter can interpret as individual menu options.
• Unpacking the list with * in the OptionMenu constructor tells Tkinter to treat each string as a separate entry.
• Using the menu's add_command method matches your existing scrape workflow, giving you consistent behavior across both loading scenarios.

内容的提问来源于stack exchange，提问作者exec85