python 窗口更新_pythontkinter更新文本窗口

所以我把这一切都搞错了。因为Tk是被驱动的，它总是会进入那个循环，而不是给我我我所期望的。我通过从头开始并使用.after方法修复了这个问题。下面是我的修改。总的来说，对于python和GUI来说是一次非常好的学习体验。在from sys import argv

import tkinter as tk

text = tk.Text

current_line = 0

file_lines = []

pause_status = False

def pause_updates():

global pause_status

if pause_status:

pause_status = False

root.title("Pytail v1.0 - Watching File")

else:

pause_status = True

root.title("Pytail v1.0 - Paused")

def get_current_line_count(lines):

lines = lines.count("n")

return lines

def get_file(tail_name):

file = open(tail_name, 'r')

lines = file.read()

file.close()

return lines

def print_lines(begin_line):

global text

global file_lines

text.config(state=tk.NORMAL)

split_lines = file_lines.split("n")

for num in range(begin_line, len(split_lines)-1):

text.insert("end", (split_lines[num])+"n")

text.yview(tk.END)

text.config(state=tk.DISABLED)

text.update()

def update_window():

try:

global current_line

global file_lines

global pause_status

if not pause_status:

file_lines = get_file(argv[1])

new_lines = get_current_line_count(file_lines)

if new_lines > current_line:

print_lines(current_line)

current_line = new_lines

except (KeyboardInterrupt, SystemExit):

print("Now Exiting.....")

root.after(1000, update_window)

def create_interface():

global text

global file_lines

frame = tk.Frame(root, background="black")

frame.place(x=10, y=10)

frame2 = tk.Frame(root)

scr = tk.Scrollbar(frame)

text = tk.Text(frame, background="black", fg="green")

text.insert("1.0", "Beginning of Tail File" + "n")

scr.config(command=text.yview)

scr.pack(side="right", fill="y", expand=False)

text.pack(side="left", fill="both", expand=True)

frame.pack(side=tk.TOP, fill="both", expand=True)

frame2.pack(side="bottom", anchor="w")

pause = tk.Button(frame2, text="Pause", command=pause_updates)

pause.pack()

print_lines(0)

update_window()

def correct_args(argv):

if not len(argv) == 2:

return False

else:

return True

if correct_args(argv):

root = tk.Tk()

root.title("Pytail v1.0 - Watching File")

file_lines = get_file(argv[1])

current_line = get_current_line_count(file_lines)

create_interface()

root.mainloop()

最后

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