Python 单选按钮tkinter传递主机值
尝试使用单选按钮来选择我所指的主机,因为最终会有 只有两个,它们是固定地址 这就是错误: 文件“/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk/Tkinter.py”,第1410行,在调用中 返回self.func(*args) 文件“Untitled 2.py”,第63行,在 命令=lambda:callback\u power\u off(关闭,主机)) 文件“Untitled 2.py”,第28行,在callback\u power\u off中 connection.connect((主机、端口)) 文件“/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/socket.py”,第224行,meth格式 返回getattr(self.\u sock,name)(*args) TypeError:强制使用Unicode:需要字符串或缓冲区,找到实例Python 单选按钮tkinter传递主机值,python,tkinter,Python,Tkinter,尝试使用单选按钮来选择我所指的主机,因为最终会有 只有两个,它们是固定地址 这就是错误: 文件“/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk/Tkinter.py”,第1410行,在调用中 返回self.func(*args) 文件“Untitled 2.py”,第63行,在 命令=lambda:callback\u power\u off(关闭,主机)) 文件“Untitled 2.p
from Tkinter import *
from socket import *
port = 7142
on = '02 00 00 00 00'
off = '02 01 00 00 00'
def callback_power_on(data, host):
if not host:
print "No host given!"
return
print "power on!"
connection = socket(AF_INET, SOCK_STREAM)
connection.connect((host, port))
connection.sendall(add_checksum(data))
connection.close()
def callback_power_off(data, host):
if not host:
print "No host given!"
return
print "power off!"
connection = socket(AF_INET, SOCK_STREAM)
connection.connect((host, port))
connection.sendall(add_checksum(data))
connection.close()
def add_checksum(s):
result = []
acc = 0
for hexcode in s.split():
code = int(hexcode, 16)
acc += code
result.append(chr(code))
result.append(chr(acc))
return ''.join(result)
master = Tk()
host = StringVar()
Radiobutton(master, text="Silas", variable = host, value ="172.25.13.10").pack(anchor=W)
Radiobutton(master, text="Beatrice", variable = host, value ="172.25.13.12").pack(anchor=W)
#entered_host = StringVar()
#e = Entry(master, textvariable=entered_host)
#e.pack()
b = Button(
master,
text="Power On",
command=lambda: callback_power_on(on, host))
#command=lambda: callback_power_on(on, host)
b.pack()
c = Button(
master,
text="Power Off",
command=lambda: callback_power_off(off, host))
#command=lambda: callback_power_on(on, host)
c.pack()
mainloop()
我认为问题在于
connect
需要一个字符串,但您正在传递StringVar
实例。使用StringVar
方法get()
检索字符串值
下面是示例的一个细微变化,请注意按钮命令函数中使用了entered\u host.get()
:
from Tkinter import *
from socket import *
port = 7142
on = '02 00 00 00 00'
off = '02 01 00 00 00'
def callback_power_on(data, host):
if not host:
print "No host given!"
return
print "power on!"
connection = socket(AF_INET, SOCK_STREAM)
connection.connect((host, port))
connection.sendall(add_checksum(data))
connection.close()
def callback_power_off(data, host):
if not host:
print "No host given!"
return
print "power off!"
connection = socket(AF_INET, SOCK_STREAM)
connection.connect((host, port))
connection.sendall(add_checksum(data))
connection.close()
def add_checksum(s):
result = []
acc = 0
for hexcode in s.split():
code = int(hexcode, 16)
acc += code
result.append(chr(code))
result.append(chr(acc))
return ''.join(result)
master = Tk()
entered_host = StringVar()
e = Entry(master, textvariable=entered_host)
e.pack()
b = Button(
master,
text="Power On",
command=lambda: callback_power_on(on, entered_host.get()))
b.pack()
c = Button(
master,
text="Power Off",
command=lambda: callback_power_off(off, entered_host.get()))
c.pack()
mainloop()
这很有道理!.get()方法是否总是需要成为回调参数的一部分?不是这样,您只需要确保使用类似
callback\u power\u on(on,'127.0.0.1')
的字符串。或者,您可以更改函数以接受StringVar实例,并在函数内部进行转换。