Question

我希望在Tkinter文本小部件中而不是在命令行中输出Python脚本。我有来自https://stackoverflow.com/a/665598/3524043的脚本：

from Tkinter import *
import subprocess as sub
p = sub.Popen('./Scripts/Speedtest.py',stdout=sub.PIPE,stderr=sub.PIPE, shell=True)
output, errors = p.communicate()

root = Tk()
text = Text(root)
text.pack()
text.insert(END, output)
root.mainloop()

我在子流程中添加了shell=true，因为我有一个OSError: [Errno 13] Permission denied。

当我运行程序时，只有一个空的文本小部件。

使用更好的解决方案编辑：

导入脚本并调用对象

from Tkinter import *
from Speedtest import ping_speed, download_speed, upload_speed

root = Tk()
text = Text(root)
text.insert(INSERT, ping_speed)
text.insert(END, download_speed)
text.pack()
mainloop()

Answer 1

基于this answer，您只需使用以下代码就可以轻松完成：

import subprocess           # required for redirecting stdout to GUI

try:
    import Tkinter as tk    # required for the GUI python 2
except:
    import tkinter as tk    # required for the GUI python 3


def redirect(module, method):
    '''Redirects stdout from the method or function in module as a string.'''
    proc = subprocess.Popen(["python", "-c",
        "import " + module + ";" + module + "." + method + "()"], stdout=subprocess.PIPE)
    out = proc.communicate()[0]
    return out.decode('unicode_escape')

def put_in_txt():
    '''Puts the redirected string in a text.'''
    txt.insert('1.0', redirect(module.get(), method.get()))


if __name__ == '__main__':

    root = tk.Tk()

    txt = tk.Text(root)
    module = tk.Entry(root)
    method = tk.Entry(root)
    btn = tk.Button(root, text="Redirect", command=put_in_txt)

    #layout
    txt.pack(fill='both', expand=True)
    module.pack(fill='both', expand=True, side='left')
    btn.pack(fill='both', expand=True, side='left')
    method.pack(fill='both', expand=True, side='left')

    root.mainloop()

假设模块位于相同的目录中。代码将模块（最左边的条目）中的方法或函数（最右边的条目）的控制台输出作为字符串返回。然后它将该字符串放在Text字段中。

请参阅Returning all methods/functions from a script without explicitly passing method names的答案。

显示命令行会生成Tkinter文本小部件

1 个答案: