python-3.x - Python Tkinter Tk Calendar 获取自定义日期不起作用并且无法以格式显示日期：“DD-MM-YYYY”

Question

我想创建一个日期选择器，但它根本不起作用，相反，无论我在以下菜单上选择的日期如何：

它只输出当前日期：

第二次单击调用该函数的按钮，dispcal()IDLE 会自动打印出当前日期，我不知道为什么。当我点击按钮Get This Date并调用函数getCustomDate()时，它只是不做它应该做的事情，也不打印任何东西。

这是日期选择器和日历功能的代码：

def getCustomDate():
    print(cal.get_date())
def dispcal():
    global cal
    calFrame=LabelFrame(mainL,borderwidth=0, bg="#c3dde6", height=100, width=100)
    calFrame.grid(row=1, column=0, sticky=NSEW)
    cal=Calendar(calFrame, selectmode="day",firstweekday="monday",background="#0f8bff",foreground="black",disabledforeground="#a3bec7",bordercolor="grey",normalbackground="#d0f4ff",weekendbackground="#8ffeff",weekendforeground ="black" ,disabledbackground="99b3bc",year=int(datetime.datetime.now().strftime("%Y")),month=int(datetime.datetime.now().strftime("%m")), day=int(datetime.datetime.now().strftime("%d")))
    cal.pack(pady=10)
    getdat=Button(calFrame,text="Get This Date",bg="#00ffde", command=getCustomDate())
    getdat.pack()

更新

感谢@j_4321 解决了我的问题，我创建了一个新的python 文件并在其中运行代码，该文件具有我想要的日历日期选择器的自定义格式，它的工作原理就像一个魅力并提供了所需的输出。

新鲜的.py：

from tkinter import *
from tkcalendar import *
root=Tk()
root.geometry("500x500")
def mainF():
    global cal
    def getDate():
        date=cal.get_date()
        print(date)
    cal.pack(pady=20, padx=20)
    butt=Button(root,text="Date Getter", bg="cyan",command=getDate).pack()
cal=Calendar(root,selectmode="day",date_pattern="dd-mm-y")
but=Button(root,text="Pick Date",command=mainF).pack()
root.mainloop()

但是在我的main.py中，相同的代码不起作用并给出以下错误消息：

<bound method Calendar.get_date of <tkcalendar.calendar_.Calendar object .!labelframe.!frame2.!frame.!frame2.!calendar>>

我不知道为什么会这样，也许我的main.py代码有问题，但我似乎无法找到它。

这是我的main.py代码：

from calendar import firstweekday
import csv, datetime
from tkinter import *
from tkcalendar import *
from tkinter import ttk
from PIL import Image, ImageTk
now=datetime.datetime.now().strftime("%d-%m-%Y")

f=open("Dr Nikhil Prescription App\Patient_Data.csv","r", newline="")
reader=csv.reader(f, delimiter=",")
L=[k[0] for k in reader]
try:
    sndat=str(1+(int(L[-1])))
except ValueError:
    sndat=1
f.close()

from tkinter import messagebox
def DataAdder2CSV():
    global edate, eSNO, eage, egender, ename, ePID, econtact, ecomp, eallergy, ehistory, eR
    e=edate.get()
    a=eSNO.get()
    d=eage.get()
    f=egender.get()
    b=ename.get()
    c=ePID.get()
    g=econtact.get()
    h=ecomp.get(1.0,END)
    i=eallergy.get(1.0,END)
    j=ehistory.get(1.0,END)
    k=eR.get(1.0,END)
    data=[a,b,c,d,e,f,g,h,i,j,k]
        
    file=open("Patient_Data.csv","a", newline="")
    writer=csv.writer(file, delimiter=",")

    writer.writerow(data)

    file.close()
    messagebox.showinfo("Prescription Generator", "Data has been saved to the database successfully!")    
def PrescGen():
    from tkinter import filedialog
    root.filename=filedialog.askdirectory(initialdir="Documents", title="Choose Destination Folder")
    '''
    import win32com.client, os
    psApp = win32com.client.Dispatch("Photoshop.Application")
    psApp.Open("Presc_Template.psd")
    doc = psApp.Application.ActiveDocument
    layer_facts = doc.ArtLayers["GLAYER"]
    text_of_layer = layer_facts.TextItem
    text_of_layer.contents = "This is an example of a new text."
    '''
    messagebox.showinfo("Prescription Generator", "Prescription has been saved in the desired location successfully!")  
def dispcal():

    calFrame.grid(row=1, column=0,pady=60, sticky=NSEW)
    cal.pack(pady=10,padx=50, fill="both", expand=True)

    def getCustomDate():
        print(cal.get_date)
    getdat=Button(calFrame,text="Get This Date",bg="#00ffde", command=getCustomDate)
    getdat.pack()

root=Tk()
root.config(bg="#add8e6")

megaF=LabelFrame(root,bg="#add8e6", borderwidth=0)
megaF.pack()

greet=Label(megaF,font="Arial 25",text="Prescription Generator", bg="#add8e6", fg="black").pack(pady=20)

dateF=Frame(megaF, padx=10, pady=10, bg="#c3dde6")
dateF.pack()

mega2F=Frame(megaF,bg="#c3dde6")
mega2F.pack()

date=Label(dateF,font="Arial 12",text="Date:", bg="#c3dde6").grid(row=0,column=0)

edate=Entry(dateF, width=10)
edate.insert(0,now)
edate.grid(row=0, column=1, padx=5)

CalIMG=ImageTk.PhotoImage(Image.open("D:\Coding\Python Scripts\Dr Nikhil Prescription App\cal.png"))

mainL=Frame(mega2F,borderwidth=0, padx=10, pady=10, bg="#c3dde6")
mainL.grid(row=0, column=0)

calFrame=Frame(mainL,borderwidth=0, bg="#c3dde6", height=200, width=100)

cal=Calendar(calFrame,
date_pattern="dd-mm-y",
selectmode="day",
firstweekday="monday",
background="#0f8bff",
foreground="black",
disabledforeground="#a3bec7",
bordercolor="grey",
normalbackground="#d0f4ff",
weekendbackground="#8ffeff",
weekendforeground ="black" ,
disabledbackground="99b3bc")

CalButt=Button(dateF, image=CalIMG, command=dispcal, borderwidth=0, bg="#c3dde6").grid(row=0, column=2, padx=5)

main2L=LabelFrame(mega2F,borderwidth=0, padx=10, pady=10, bg="#c3dde6")
main2L.grid(row=0, column=1,pady=20, padx=40)

PDlf=Frame(mainL, padx=10, pady=13, bg="#c3dde6")
PDlf.grid(row=0, column=0, sticky=NSEW)

sno=Label(PDlf,font="Arial 14",text="Sno:", bg="#c3dde6").grid(row=0,column=0, sticky=E)
eSNO=Entry(PDlf, width=3)
eSNO.insert(0,sndat)
eSNO.grid(row=0, column=1)

age=Label(PDlf,font="Arial 14",text="Age:", bg="#c3dde6").grid(row=1,column=0, sticky=E)
eage=Entry(PDlf, width=3)
eage.grid(row=1, column=1, pady=10)

gender=Label(PDlf,font="Arial 14",text="Gender:", bg="#c3dde6").grid(row=2,column=0, sticky=E)
egender=Entry(PDlf, width=3)
egender.grid(row=2, column=1)

name=Label(PDlf,font="Arial 14",text="Name:", bg="#c3dde6").grid(row=0,column=3, sticky=E)
ename=Entry(PDlf, width=15)
ename.grid(row=0, column=4)

Pid=Label(PDlf,font="Arial 14",text="PatientID:", bg="#c3dde6").grid(row=1,column=3, sticky=E)
ePID=Entry(PDlf, width=15)
ePID.grid(row=1, column=4, pady=10)

contact=Label(PDlf,font="Arial 14",text="Contact:", bg="#c3dde6").grid(row=2,column=3, sticky=E)
econtact=Entry(PDlf, width=15)
econtact.grid(row=2, column=4)

blank=Label(PDlf,font="Arial 14",text="         ", bg="#c3dde6").grid(row=1,column=2)

contentLF=LabelFrame(main2L, padx=10, pady=10, bg="#c3dde6", borderwidth=0)
contentLF.grid(row=0, column=2, sticky=SE)

blank=Label(PDlf,font="Arial 14",text="         ", bg="#c3dde6").grid(row=0,column=2)

complaint=Label(contentLF,font="Arial 14",text="Complaint:", bg="#c3dde6").grid(row=0,column=1, sticky=E)
ecomp=Text(contentLF, width=90, height=4)
ecomp.grid(row=0, column=2)

allergy=Label(contentLF,font="Arial 14",text="Allergy:", bg="#c3dde6").grid(row=1,column=1, sticky=E)
eallergy=Text(contentLF, width=90, height=2)
eallergy.grid(row=1, column=2, pady=10)

history=Label(contentLF,font="Arial 14",text="History:", bg="#c3dde6").grid(row=2,column=1, sticky=E)
ehistory=Text(contentLF, width=90, height=5)
ehistory.grid(row=2, column=2)

R=Label(contentLF,font="Arial 14",text="Diagnosis:", bg="#c3dde6").grid(row=3,column=1, sticky=E)
eR=Text(contentLF, width=90, height=12)
eR.grid(row=3, column=2, pady=10)

buttF=LabelFrame(main2L, bg="#c3dde6", borderwidth=0)
buttF.grid(row=4, column=2, sticky=E)
genPres=Button(buttF,font="Arial 12",text="Generate Prescription", bg="#ff80b9", command=PrescGen).grid(row=0, column=0, padx=10, sticky=E)

csvAdd=Button(buttF,font="Arial 12",text="Add to Database", bg="#49ff9a", command=DataAdder2CSV).grid(row=0, column=1,padx=10, sticky=E)

root.title("Prescription Generator")
root.state("zoomed")
root.mainloop()

标签： python-3.xdatetimeuser-interfacetkintertkcalendar

Answer 1

首先，在

 getdat=Button(calFrame,text="Get This Date",bg="#00ffde", command=getCustomDate())

您正在执行函数而不是将其作为参数传递，例如为什么命令绑定到按钮或声明时执行的事件？.

然后，根据日历的文档字符串，它需要一个date_pattern选项

date_pattern : str
    date pattern used to format the date as a string. The default
    pattern used is babel's short date format in the Calendar's locale.

    A valid pattern is a combination of 'y', 'm' and 'd' separated by
    non letter characters to indicate how and in which order the
    year, month and day should be displayed.

        y: 'yy' for the last two digits of the year, any other number of 'y's for
           the full year with an extra padding of zero if it has less
           digits than the number of 'y's.
        m: 'm' for the month number without padding, 'mm' for a
           two-digit month
        d: 'd' for the day of month number without padding, 'dd' for a
           two-digit day

    Examples for datetime.date(2019, 7, 1):

        'y-mm-dd' → '2019-07-01'
        'm/d/yy' → '7/1/19'

date_pattern="dd-mm-yyyy"因此，只需在创建日历时传入参数。

这是一个例子

from tkinter import Tk, Button
from tkcalendar import Calendar

def getCustomDate():
    print(cal.get_date())

root = Tk()

cal = Calendar(root,
               selectmode="day",
               firstweekday="monday",
               background="#0f8bff",
               foreground="black",
               disabledforeground="#a3bec7",
               bordercolor="grey",
               normalbackground="#d0f4ff",
               weekendbackground="#8ffeff",
               weekendforeground ="black",
               disabledbackground="99b3bc",
               date_pattern="dd-mm-yyyy")
cal.pack(pady=10)
getdat=Button(root, text="Get This Date",
              bg="#00ffde", command=getCustomDate)
getdat.pack()
root.mainloop()