在python3+;gtk3
这可能更像是一个关于a在python3+;gtk3,python,python-3.x,gtk,gtk3,Python,Python 3.x,Gtk,Gtk3,这可能更像是一个关于agtk3的问题。 在以下代码位中,打印(numele)工作正常,即connect功能self.nument.connect(“激活”,self.get\nument)正常 from gi.repository import Gtk, GObject class EntryWindow(Gtk.Window): def __init__(self): Gtk.Window.__init__(self, title="Entry Demo") self.
gtk3
的问题。
在以下代码位中,打印(numele)工作正常,即connect
功能self.nument.connect(“激活”,self.get\nument)
正常
from gi.repository import Gtk, GObject
class EntryWindow(Gtk.Window):
def __init__(self):
Gtk.Window.__init__(self, title="Entry Demo")
self.set_size_request(100, 50)
grid=Gtk.Grid()
self.add(grid)
#Create Entry nument
self.nument = Gtk.Entry()
self.numlab = Gtk.Label()
self.numlab.set_text("Number Of Element")
self.nument.set_text("Number Of Element")
self.nument.set_editable("TRUE")
grid.attach(self.numlab, 0,2,1,1)
grid.attach(self.nument, 1,2,1,1)
#Connect Entry nument
self.nument.connect("activate",self.get_nument)
#Create Entry from numele
for i in range(1,numele+1):
self.entry = Gtk.Entry()
self.entry.set_text("Hello World")
self.entry.set_editable("FALSE")
grid.attach(self.entry, 0,2+i,1,1)
def get_nument(self,entry):
numele= self.nument.get_text()
print(numele)
win = EntryWindow()
win.connect("delete-event", Gtk.main_quit)
win.show_all()
Gtk.main()
但是,在循环的中,它无法访问numele值
$python3 hw3.py
Traceback (most recent call last):
File "hw3.py", line 35, in <module>
win = EntryWindow()
File "hw3.py", line 24, in __init__
for i in range(1,numele+1):
NameError: global name 'numele' is not defined
并将该功能定义为:
def获取设备(自我,输入):
self.numele=self.nument.get_text()
只有出现错误时:
$ python3 test.py
Traceback (most recent call last):
File "test.py", line 35, in <module>
win = EntryWindow()
File "test.py", line 21, in __init__
self.nument.connect("activate",self.get_nument)
AttributeError: 'EntryWindow' object has no attribute 'get_nument'
$python3 test.py
回溯(最近一次呼叫最后一次):
文件“test.py”,第35行,在
win=EntryWindow()
文件“test.py”,第21行,在_init中__
self.nument.connect(“激活”,self.get_nument)
AttributeError:“EntryWindow”对象没有属性“get\u nument”
你的想法完全正确。numele
变量的作用域是局部的,因此它会在函数末尾被删除。返回函数中的值,或者将其存储为self.numele
。它将它存储在EntryWindow
对象中,以便它在函数范围之外继续存在
另外,您可能需要先执行int(numele)
,然后才能在range()调用中使用它。代码有几个错误,我不确定您想要实现什么。
您可能希望根据第一个条目的编号创建一些Gtk.Entries。因此,必须将for循环移动到get\u nument
方法中。这仍然会引发错误,因为get\u nument
缩进太多。此外,还需要将Gtk.Entry中的字符串转换为整数。
最后,网格必须是可供get\u nument
访问的属性
结果应该如下所示:
from gi.repository import Gtk, GObject
class EntryWindow(Gtk.Window):
def __init__(self):
Gtk.Window.__init__(self, title="Entry Demo")
self.set_size_request(100, 50)
self.grid=Gtk.Grid()
self.add(self.grid)
#Create Entry nument
self.nument = Gtk.Entry()
self.numlab = Gtk.Label()
self.numlab.set_text("Number Of Element")
self.nument.set_editable("TRUE")
self.grid.attach(self.numlab, 0,2,1,1)
self.grid.attach(self.nument, 1,2,1,1)
#Connect Entry nument
self.nument.connect("activate",self.get_nument)
def get_nument(self,entry):
numele= self.nument.get_text()
print(numele)
#Create Entry from numele
for i in range(1,int(numele)+1):
entry = Gtk.Entry()
entry.set_text("Hello World")
entry.set_editable("FALSE")
entry.show()
self.grid.attach(entry, 0,2+i,1,1)
win = EntryWindow()
win.connect("delete-event", Gtk.main_quit)
win.show_all()
Gtk.main()
此代码仍然存在问题,例如,如果输入的数字较低,则不会从网格中删除条目
from gi.repository import Gtk, GObject
class EntryWindow(Gtk.Window):
def __init__(self):
Gtk.Window.__init__(self, title="Entry Demo")
self.set_size_request(100, 50)
self.grid=Gtk.Grid()
self.add(self.grid)
#Create Entry nument
self.nument = Gtk.Entry()
self.numlab = Gtk.Label()
self.numlab.set_text("Number Of Element")
self.nument.set_editable("TRUE")
self.grid.attach(self.numlab, 0,2,1,1)
self.grid.attach(self.nument, 1,2,1,1)
#Connect Entry nument
self.nument.connect("activate",self.get_nument)
def get_nument(self,entry):
numele= self.nument.get_text()
print(numele)
#Create Entry from numele
for i in range(1,int(numele)+1):
entry = Gtk.Entry()
entry.set_text("Hello World")
entry.set_editable("FALSE")
entry.show()
self.grid.attach(entry, 0,2+i,1,1)
win = EntryWindow()
win.connect("delete-event", Gtk.main_quit)
win.show_all()
Gtk.main()