Python 标签不是';t改变
我只想发布我的代码片段,因为本质上,它做的是相同的事情Python 标签不是';t改变,python,python-2.7,tkinter,Python,Python 2.7,Tkinter,我只想发布我的代码片段,因为本质上,它做的是相同的事情 string = '' time_calc = Tk() time_calc.geometry('500x400') time_calc.title("Calculate A Time") time_calc_frame= Frame(time_calc).grid(row=0, column=0) jul_box = Entry(time_calc) jul_box.insert(0, "Julian Date") jul_box.p
string = ''
time_calc = Tk()
time_calc.geometry('500x400')
time_calc.title("Calculate A Time")
time_calc_frame= Frame(time_calc).grid(row=0, column=0)
jul_box = Entry(time_calc)
jul_box.insert(0, "Julian Date")
jul_box.pack(side = TOP)
jul_box.bind('<Return>')
def jd2gd(jd):
global string
jd=jd+0.5
Z=int(jd)
F=jd-Z
alpha=int((Z-1867216.25)/36524.25)
A=Z + 1 + alpha - int(alpha/4)
B = A + 1524
C = int( (B-122.1)/365.25)
D = int( 365.25*C )
E = int( (B-D)/30.6001 )
dd = B - D - int(30.6001*E) + F
if E<13.5:
mm=E-1
if E>13.5:
mm=E-13
if mm>2.5:
yyyy=C-4716
if mm<2.5:
yyyy=C-4715
months=["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]
daylist=[31,28,31,30,31,30,31,31,30,31,30,31]
daylist2=[31,29,31,30,31,30,31,31,30,31,30,31]
h=int((dd-int(dd))*24)
min =int((((dd-int(dd))*24)-h)*60)
sec=86400*(dd-int(dd))-h*3600-min*60
# Now calculate the fractional year. Do we have a leap year?
if (yyyy%4 != 0):
days=daylist2
elif (yyyy%400 == 0):
days=daylist2
elif (yyyy%100 == 0):
days=daylist
else:
days=daylist2
hh = 24.0*(dd % 1.0)
min = 60.0*(hh % 1.0)
sec = 60.0*(min % 1.0)
dd = dd-(dd%1.0)
hh = hh-(hh%1.0)
min = min-(min%1.0)
if hh < 10:
hh = '0%s'%str(int(hh))
else:
hh = int(hh)
if min < 10:
min = '0%s'%str(int(min))
else:
min = int(min)
if sec < 10:
sec = '0%s'%str(int(sec))
else:
sec = int(sec)
string = "%s/%s/%s %s:%s:%s UTC" % (str(int(mm)), str(int(dd)), str(yyyy), str(hh), str(min), str(sec))
print string
return
def j2ghandler():
jul = float(jul_box.get())
jd2gd(jul)
j2g_button = Button(time_calc, text='Convert Julian\n to Gregorian', command = j2ghandler, width= 25, pady=5).pack(side=TOP)
#Draw Time String on Canvas
var = StringVar()
var.set(string)
label = Label(time_calc, textvariable=var)
label.pack(side=TOP)
string=''
时间计算=Tk()
时间计算几何(“500x400”)
时间计算标题(“计算时间”)
时间计算框架=框架(时间计算).grid(行=0,列=0)
七月框=输入(时间计算)
七月方框。插入(0,“朱利安日期”)
7月包装(侧面=顶部)
七月箱绑定(“”)
def jd2gd(jd):
全局字符串
jd=jd+0.5
Z=int(jd)
F=jd-Z
阿尔法=整数((Z-1867216.25)/36524.25)
A=Z+1+alpha-int(alpha/4)
B=A+1524
C=int((B-122.1)/365.25)
D=int(365.25*C)
E=int((B-D)/30.6001)
dd=B-D-int(30.6001*E)+F
如果E13.5:
mm=E-13
如果毫米>2.5:
yyyy=C-4716
如果mm我会偏离使用全局
,尤其是使用字符串
,因为它是不明确的
将jd2gd
returnstring
(或您决定给它的任何新名称)放在程序底部,并将代码包含在j2ghandler
中。例如:
def j2ghandler():
jul = float(jul_box.get())
gregDate = jd2gd(jul)
label = Label(time_calc, text=gregDate)
label.pack(side=TOP)
然后删除最后4行
我尚未对此进行测试,因此如果出现错误,一种解决方案是将按钮更改为:
j2g_button = Button(time_calc, text='Convert Julian\n to Gregorian', command=lambda: j2ghandler(time_calc), width= 25, pady=5)
j2g_button.pack(side=TOP)
和j2ghandler
到:
def j2ghandler(master):
jul = float(jul_box.get())
gregDate = jd2gd(jul)
label = Label(master, text=gregDate)
label.pack(side=TOP)
顺便说一下。。。
您可能需要更改:
j2g_button = Button(time_calc, text='Convert Julian\n to Gregorian', command = j2ghandler, width= 25, pady=5).pack(side=TOP)
致:
它按原样工作,但如果您再次尝试使用j2g_按钮
,它将返回一个none
对象
祝你好运 您需要记住,这个GUI模块(与几乎所有模块一样)是事件驱动的,这意味着每当发生某个事件时(单击按钮等),都会调用函数,这都是由Tkinter的mainloop完成的
在您的情况下:超过您的定义代码(所有的time\u calc=Tk()
等等),您开始循环;然后,当点击按钮的事件触发时,它会导致绑定函数的调用(j2ghandler()
)。从现在起,应用程序将等待它返回,并返回其循环
解决方案
我假设您想要更改按钮下方的标签文本,当按下按钮时(时间被转换)
您需要在调用函数的事件中设置标签的值;此处,打印后:
def jd2gd(jd):
#global string
...
print string
var.set(string)
#return
注意:不需要注释行
标签已更改,无需重新创建标签
对象。
另外,Al.Sal关于globals的提示在这里很重要。请求函数不应保存状态
祝Python好运 注释框中的部分是我更改的:
#####################
from Tkinter import *
#####################
string = ''
time_calc = Tk()
time_calc.geometry('500x400')
time_calc.title("Calculate A Time")
time_calc_frame= Frame(time_calc).grid(row=0, column=0)
jul_box = Entry(time_calc)
jul_box.insert(0, "Julian Date")
jul_box.pack(side = TOP)
jul_box.bind('<Return>')
def jd2gd(jd):
global string
jd=jd+0.5
Z=int(jd)
F=jd-Z
alpha=int((Z-1867216.25)/36524.25)
A=Z + 1 + alpha - int(alpha/4)
B = A + 1524
C = int( (B-122.1)/365.25)
D = int( 365.25*C )
E = int( (B-D)/30.6001 )
dd = B - D - int(30.6001*E) + F
if E<13.5:
mm=E-1
if E>13.5:
mm=E-13
if mm>2.5:
yyyy=C-4716
if mm<2.5:
yyyy=C-4715
months=["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]
daylist=[31,28,31,30,31,30,31,31,30,31,30,31]
daylist2=[31,29,31,30,31,30,31,31,30,31,30,31]
h=int((dd-int(dd))*24)
min =int((((dd-int(dd))*24)-h)*60)
sec=86400*(dd-int(dd))-h*3600-min*60
# Now calculate the fractional year. Do we have a leap year?
if (yyyy%4 != 0):
days=daylist2
elif (yyyy%400 == 0):
days=daylist2
elif (yyyy%100 == 0):
days=daylist
else:
days=daylist2
hh = 24.0*(dd % 1.0)
min = 60.0*(hh % 1.0)
sec = 60.0*(min % 1.0)
dd = dd-(dd%1.0)
hh = hh-(hh%1.0)
min = min-(min%1.0)
if hh < 10:
hh = '0%s'%str(int(hh))
else:
hh = int(hh)
if min < 10:
min = '0%s'%str(int(min))
else:
min = int(min)
if sec < 10:
sec = '0%s'%str(int(sec))
else:
sec = int(sec)
string = "%s/%s/%s %s:%s:%s UTC" % (str(int(mm)), str(int(dd)), str(yyyy), str(hh), str(min), str(sec))
print string
##############
return string
##############
def j2ghandler():
jul = float(jul_box.get())
#####################
var.set(jd2gd(jul))
#####################
j2g_button = Button(time_calc, text='Convert Julian\n to Gregorian', command = j2ghandler, width= 25, pady=5).pack(side=TOP)
#Draw Time String on Canvas
var = StringVar()
var.set(string)
label = Label(time_calc, textvariable=var)
label.pack(side=TOP)
##############################
time_calc.mainloop()
##############################
#####################
从Tkinter进口*
#####################
字符串=“”
时间计算=Tk()
时间计算几何(“500x400”)
时间计算标题(“计算时间”)
时间计算框架=框架(时间计算).grid(行=0,列=0)
七月框=输入(时间计算)
七月方框。插入(0,“朱利安日期”)
7月包装(侧面=顶部)
七月箱绑定(“”)
def jd2gd(jd):
全局字符串
jd=jd+0.5
Z=int(jd)
F=jd-Z
阿尔法=整数((Z-1867216.25)/36524.25)
A=Z+1+alpha-int(alpha/4)
B=A+1524
C=int((B-122.1)/365.25)
D=int(365.25*C)
E=int((B-D)/30.6001)
dd=B-D-int(30.6001*E)+F
如果E13.5:
mm=E-13
如果毫米>2.5:
yyyy=C-4716
如果嗯
#####################
from Tkinter import *
#####################
string = ''
time_calc = Tk()
time_calc.geometry('500x400')
time_calc.title("Calculate A Time")
time_calc_frame= Frame(time_calc).grid(row=0, column=0)
jul_box = Entry(time_calc)
jul_box.insert(0, "Julian Date")
jul_box.pack(side = TOP)
jul_box.bind('<Return>')
def jd2gd(jd):
global string
jd=jd+0.5
Z=int(jd)
F=jd-Z
alpha=int((Z-1867216.25)/36524.25)
A=Z + 1 + alpha - int(alpha/4)
B = A + 1524
C = int( (B-122.1)/365.25)
D = int( 365.25*C )
E = int( (B-D)/30.6001 )
dd = B - D - int(30.6001*E) + F
if E<13.5:
mm=E-1
if E>13.5:
mm=E-13
if mm>2.5:
yyyy=C-4716
if mm<2.5:
yyyy=C-4715
months=["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]
daylist=[31,28,31,30,31,30,31,31,30,31,30,31]
daylist2=[31,29,31,30,31,30,31,31,30,31,30,31]
h=int((dd-int(dd))*24)
min =int((((dd-int(dd))*24)-h)*60)
sec=86400*(dd-int(dd))-h*3600-min*60
# Now calculate the fractional year. Do we have a leap year?
if (yyyy%4 != 0):
days=daylist2
elif (yyyy%400 == 0):
days=daylist2
elif (yyyy%100 == 0):
days=daylist
else:
days=daylist2
hh = 24.0*(dd % 1.0)
min = 60.0*(hh % 1.0)
sec = 60.0*(min % 1.0)
dd = dd-(dd%1.0)
hh = hh-(hh%1.0)
min = min-(min%1.0)
if hh < 10:
hh = '0%s'%str(int(hh))
else:
hh = int(hh)
if min < 10:
min = '0%s'%str(int(min))
else:
min = int(min)
if sec < 10:
sec = '0%s'%str(int(sec))
else:
sec = int(sec)
string = "%s/%s/%s %s:%s:%s UTC" % (str(int(mm)), str(int(dd)), str(yyyy), str(hh), str(min), str(sec))
print string
##############
return string
##############
def j2ghandler():
jul = float(jul_box.get())
#####################
var.set(jd2gd(jul))
#####################
j2g_button = Button(time_calc, text='Convert Julian\n to Gregorian', command = j2ghandler, width= 25, pady=5).pack(side=TOP)
#Draw Time String on Canvas
var = StringVar()
var.set(string)
label = Label(time_calc, textvariable=var)
label.pack(side=TOP)
##############################
time_calc.mainloop()
##############################