python - 从桌面文本文件创建一列并在 python tkinter 中将其识别为正面、负面或中性句子

Question

我想在 python gui 中创建一个 (nx2) 表，其中 n 是我在文本文件中的句子数量，我的第二列将包含一个滚动条，我可以在其中手动分配(正或负或中性)值到它。目前，我可以使用以下代码从文本文件中获取句子:-

root=Tk()

def openInstruktion():
    from subprocess import call
    call("notepad c:\\Users\\Desktop\\tweets.txt")

instruktionBtn = Button(root, text='tweets', command=openInstruktion)
instruktionBtn.grid(row=6, column=0)
root.mainloop()

Gui 应该是这样的:-

提前感谢您的帮助。

Answer 1

首先，要从您的文本文件中读取推文，请尝试使用 .readlines() :

# Get the list of tweets from a text file
with open("c:\\Users\\summert\\Desktop\\tweets.txt") as f:
    tweets = [x.strip() for x in f.readlines()]

然后，创建“表格”的一种简单方法是使用 grid 对齐小部件方法。

最后，你可以添加一个scrollbar如果表格太长:

import tkinter as tk
from tkinter import ttk

root = tk.Tk()
label_tweet = tk.Label(root, text="Tweet", width=28)
label_tweet.grid(row=0, column=0, padx=(20,0), pady=5)
label_sentiment = tk.Label(root, text="Sentiment", width=15)
label_sentiment.grid(row=0, column=1, padx=(0,30), pady=5)

# Create a table container with a scrollbar using a canvas
table_container = tk.Frame(root)
table_container.grid(row=1, column=0, columnspan=2, padx=20)
canvas = tk.Canvas(table_container, highlightthickness=0)
frame = tk.Frame(canvas)
vsb = ttk.Scrollbar(table_container, orient="vertical", command=canvas.yview)
canvas.configure(yscrollcommand=vsb.set)
canvas.pack(side="left", fill="both", expand=True)
vsb.pack(side="left", fill="y")
canvas.create_window((0,0), window=frame, anchor="nw")

# Put the tweets in a hand-made "table"
possibleSentiments = ["Positive", "Neutral", "Negative"]
sentimentBoxes = []
for i, tweet in enumerate(tweets):
    # Create an entry box for the tweet
    e = ttk.Entry(frame, width=35)
    e.insert(0, tweet)
    e.grid(row=i+1, column=0)
    # Create a combobox for the associated sentiment
    c = ttk.Combobox(frame, values=possibleSentiments, width=12, state="readonly")
    c.set(possibleSentiments[1])
    c.grid(row=i+1, column=1)
    sentimentBoxes.append(c)

# Add a button to save the tweets and sentiments in a CSV file
def saveSentiments():
    sentiments = [c.get() for c in sentimentBoxes]
    print(sentiments)
    with open('tweetSentiments.csv', 'w') as csvfile:
        for i in range(len(tweets)):
            csvfile.write('"{}","{}"\n'.format(tweets[i], sentiments[i]))

button = tk.Button(root, text="Save sentiments", command=saveSentiments)
button.grid(row=2, column=0, columnspan=2, pady=10)

# Resize the canvas
root.update()
frame_width = frame.winfo_width()
canvas.config(width=frame_width, height=140)
canvas.configure(scrollregion=canvas.bbox("all"))

# Launch the app
root.mainloop()