Question

因此，我有一些代码可用于验证条目小部件，以便只能输入整数值。我想达到相同的效果，但是除了整数值以外，两个整数值和浮点值都被排除在外。

from tkinter import *
root = Tk()
def testVal(inp,acttyp):
    if acttyp == '1': #insert
        if not inp.isdigit():
            return False
    return True
entry = Entry(root, validate="key")
entry['validatecommand'] = (entry.register(testVal),'%P','%d')
entry.pack()

root.mainloop()

Answer 1

您只需在输入文本上调用float()即可确定它是整数还是浮点数：

from tkinter import *

def validate_entry(inp):
    try:
        float(inp)
    except:
        return False
    return True

root = Tk()
Entry(root, validate='key', vcmd=(root.register(validate_entry), '%P')).pack()
root.mainloop()

Answer 2

我的基本函数 isfloat() 用于 Tkinter 条目小部件浮动验证和限制（-90.00 到 90.00）

from tkinter import *

def isfloat(P):
    if (P == "" or P == "-"):
        return True
    else:
        c=0
        i,j,k,l=1,1,1,1
        for x in P:
            if(i==2):
                if(j==2):
                    if(k==1):
                        if(x=='1' or x=='2' or x=='3' or x=='4' or x=='5' or x=='6' or x=='7' or
                           x=='8' or x=='9' or x=='0' or x=='.'):
                            c+=1
                            if(x=='.'):k=2
                    elif(k==2):
                        if(x=='1' or x=='2' or x=='3' or x=='4' or x=='5' or x=='6' or x=='7' or
                           x=='8' or x=='9' or x=='0'):
                            c+=1
                elif(j==1):
                    if(l==1):
                        if(x=='1' or x=='2' or x=='3' or x=='4' or x=='5' or x=='6' or x=='7' or
                           x=='8' or x=='9' or x=='0' or x=='.'):
                            c+=1
                            j=2
                            if(x=='.'):k=2
                    elif(l==2):
                        if(x=='1' or x=='2' or x=='3' or x=='4' or x=='5' or x=='6' or x=='7' or
                           x=='8' or x=='9' or x=='0'):
                            c+=1
                            j=2                        

            elif(i==1):
                if(x=='1' or x=='2' or x=='3' or x=='4' or x=='5' or x=='6' or x=='7' or
                   x=='8' or x=='9' or x=='0' or x=='-'):
                    c+=1
                    i=2
                    if(x=='-'):l=2
                else:
                    return False
            else:
                return False
        #For latitude calculation, 'P' is the number, '-90.0' is the from, '-90.0' is the to
        if(c==len(P) and float(P)<=90.0 and float(P)>=-90.0):
            return True
        else:
            return False

def prt():
    if(col[0].get()!=""):print(float(col[0].get()), "\t", type(float(col[0].get())))
    else:False

setup=Tk()
setup.geometry("200x200")           
col,d=[],[]         
col.append(StringVar())
d.append(Entry(setup, textvariable=col[0], width=15, validate='all', validatecommand=((setup.register(isfloat)), '%P')))
d[0].grid(row=0,column=0)
Button(setup,text="Print",command=prt).grid(row=1,column=0)
setup.mainloop()

使用tkinter对整数和浮点值进行条目小部件验证

2 个答案: