我一直在研究使用 Python Tkinter 制作一个时钟。我已经成功做到了这一点，并希望将其提升到一个新的水平：自动日/夜主题更改。我尝试过使用strftime以及我自己的代码，用于准确估计现在是白天还是晚上。该代码总是会给我错误的数字颜色，但给我正确的冒号颜色。
有时它仅适用于该时钟代码，但不适用于我的完整代码。
这是我的完整代码：
#!/usr/bin/env python
import sys
if sys.version_info[0] == 2:
import Tkinter as tk
else:
import tkinter as tk
from time import sleep, strftime
import datetime
import feedparser
import time
from itertools import cycle
dark = {1:16, 2:17, 3:18, 4:19, 5:19, 6:20, 7:20, 8:19, 9:18, 10:17, 11:16, 12:16}
#month_number : sunrise_hour
light = {1:8, 2:7, 3:6, 4:5, 5:4, 6:4, 7:4, 8:5, 9:6, 10:6, 11:7, 12:8}
root = tk.Tk()
current_theme = "not set"
d = feedparser.parse('https://www.reddit.com/r/news/.rss')
post_list = cycle(d.entries)
def exitt():
sleep(3)
root.destroy()
def theme_updater(theme_bg, theme_fg):
clock.config(bg=theme_bg, fg=theme_fg)
extra_clock.config(bg=theme_bg, fg=theme_fg)
label_rss.config(bg=theme_bg, fg=theme_fg)
end.config(fg=theme_fg, bg=theme_bg)
time1 = ''
extra_time1 = ''
clock = tk.Label(root, font=('calibri light', 150))
clock.pack(fill=tk.BOTH, expand=1)
extra_clock = tk.Label(root, font=('calibri light', 45))
extra_clock.pack(fill=tk.BOTH, expand=1)
label_rss = tk.Label(root, font=('calibri', 14))
label_rss.pack(fill=tk.BOTH)
end = tk.Button(root, text="Exit", font=('bold', 18), bd=0, borderwidth=0, highlightthickness=0, command=lambda:exitt(), height=0, width=0)
end.pack(fill=tk.BOTH)
def rssfeeds():
post = next(post_list)
RSSFEED = post.title
modTXT = 'r/news Feed: ' + RSSFEED
label_rss.config(text=modTXT)
root.after(8000, rssfeeds)
rssfeeds()
def tick():
global current_theme
global time1
time2 = strftime("%H:%M:%S")
if time2 != time1:
time1 = time2
clock.config(text=time2)
time_now = time.localtime()
if time_now.tm_hour <= dark[time_now.tm_mon] or time_now.tm_hour < light[time_now.tm_mon]:
if current_theme != "night":
theme_updater("black", "white")
current_theme = "night"
print('Night time theme set.')
else:
if current_theme != "day":
theme_updater("white", "black")
current_theme = "day"
print('Day time theme set.')
clock.after(1000, tick)
def ticki():
global extra_time1
extra_time2 = strftime("%A, %d %B %Y")
if extra_time2 != extra_time1:
extra_time1 = extra_time2
extra_clock.config(text=extra_time2)
extra_clock.after(1000, ticki)
tick()
ticki()
w, h = root.winfo_screenwidth(), root.winfo_screenheight()
root.overrideredirect(1)
root.geometry("%dx%d+0+0" % (w, h))
root.focus_set()
root.mainloop()
This is what happens on the day theme in my full code:
And on the night theme:
根据您提供的代码，我移动了一些内容并更新了tick()功能检查当前时间状态。
通过添加一个跟踪变量来查看我们是否已经设置了当天的主题，我们可以防止程序每秒重新应用该主题，而每天只应用一次。
如果你翻转这条线：
if time_now.tm_hour >= dark[time_now.tm_mon] or time_now.tm_hour < light[time_now.tm_mon]:
To this:
if time_now.tm_hour <= dark[time_now.tm_mon] or time_now.tm_hour > light[time_now.tm_mon]:
您可以进行影响测试以确保夜间主题有效，这样您就不必等待一整天。
我也改变了after()语句在 1 秒后刷新时钟，因为每秒更新时钟 5 次是没有意义的。
请查看下面的代码，如果您有任何疑问，请告诉我。
import Tkinter as tk
import time
dark = {1:16, 2:17, 3:18, 4:19, 5:19, 6:20, 7:20, 8:19, 9:18, 10:17, 11:16, 12:16}
#month_number : sunrise_hour
light = {1:8, 2:7, 3:6, 4:5, 5:4, 6:4, 7:4, 8:5, 9:6, 10:6, 11:7, 12:8}
root = tk.Tk()
time1 = ''
clock = tk.Label(root, font=('calibri', 20, 'bold'))
clock.pack(fill=tk.BOTH, expand=1)
current_theme = "not set"
def theme_updater(theme_bg, theme_fg):
clock.config(bg=theme_bg, fg=theme_fg)
def tick():
global time1, clock, current_theme
time2 = time.strftime('%H:%M:%S')
if time2 != time1:
time1 = time2
clock.config(text=time2)
time_now = time.localtime()
if time_now.tm_hour >= dark[time_now.tm_mon] or time_now.tm_hour < light[time_now.tm_mon]:
if current_theme != "night":
theme_updater("black", "white")
current_theme = "night"
print('Night time theme set.')
else:
if current_theme != "day":
theme_updater("white", "black")
current_theme = "day"
print('Day time theme set.')
clock.after(1000, tick)
tick()
root.mainloop()
UPDATE:
根据您更新的问题，我已将您的代码重新编写为 OOP。我无法重现您的错误，但有些事情看起来需要更改。例如你正在使用sleep在 tkinter 中，这将导致您的程序冻结。我们可以用after反而。
我删除了 rss feed 部分，因为它与测试无关。
看一下下面的示例，如果有帮助请告诉我。
import tkinter as tk
from time import strftime
import time
class MyApp(tk.Tk):
def __init__(self):
tk.Tk.__init__(self)
self.dark = {1:16, 2:17, 3:18, 4:19, 5:19, 6:20, 7:20, 8:19, 9:18, 10:17, 11:16, 12:16}
self.light = {1:8, 2:7, 3:6, 4:5, 5:4, 6:4, 7:4, 8:5, 9:6, 10:6, 11:7, 12:8}
self.current_theme = "not set"
self.time1 = ''
self.extra_time1 = ''
self.clock = tk.Label(self, font=('calibri light', 150))
self.clock.pack(fill=tk.BOTH, expand=1)
self.extra_clock = tk.Label(self, font=('calibri light', 45))
self.extra_clock.pack(fill=tk.BOTH, expand=1)
self.label_rss = tk.Label(self, font=('calibri', 14))
self.label_rss.pack(fill=tk.BOTH)
self.end = tk.Button(self, text="Exit", font=('bold', 18), bd=0, borderwidth=0, highlightthickness=0, command=self.exitt, height=0, width=0)
self.end.pack(fill=tk.BOTH)
self.w, self.h = self.winfo_screenwidth(), self.winfo_screenheight()
self.overrideredirect(1)
self.geometry("%dx%d+0+0" % (self.w, self.h))
self.focus_set()
self.tick()
self.ticki()
def exitt(self):
self.after(3000, self.destroy)
def theme_updater(self, theme_bg, theme_fg):
self.clock.config(bg=theme_bg, fg=theme_fg)
self.extra_clock.config(bg=theme_bg, fg=theme_fg)
self.label_rss.config(bg=theme_bg, fg=theme_fg)
self.end.config(fg=theme_fg, bg=theme_bg)
def tick(self):
time2 = strftime("%H:%M:%S")
if time2 != self.time1:
self.time1 = time2
self.clock.config(text=time2)
time_now = time.localtime()
if time_now.tm_hour >= self.dark[time_now.tm_mon] or time_now.tm_hour < self.light[time_now.tm_mon]:
if self.current_theme != "night":
self.theme_updater("black", "white")
self.current_theme = "night"
print('Night time theme set.')
else:
if self.current_theme != "day":
self.theme_updater("white", "black")
self.current_theme = "day"
print('Day time theme set.')
self.clock.after(1000, self.tick)
def ticki(self):
extra_time2 = strftime("%A, %d %B %Y")
if extra_time2 != self.extra_time1:
self.extra_time1 = extra_time2
self.extra_clock.config(text=extra_time2)
self.extra_clock.after(1000, self.ticki)
app = MyApp()
app.mainloop()