Python 文本文件的自动增量行
我创建了一个普通的gui程序,它读取文本文件上的行,并显示在文本tk输入字段中。当我按下按钮时,我想自动增加行的索引,我被while循环弄糊涂了。我迄今为止所做的代码如下:Python 文本文件的自动增量行,python,tkinter,Python,Tkinter,我创建了一个普通的gui程序,它读取文本文件上的行,并显示在文本tk输入字段中。当我按下按钮时,我想自动增加行的索引,我被while循环弄糊涂了。我迄今为止所做的代码如下: def forms(self): b = tk.Button(bd ='4', text="Auto Fill", width = 20, command = self.autosave) b.place (x=230, y=600) c = tk.Button(bd ='
def forms(self):
b = tk.Button(bd ='4', text="Auto Fill", width = 20, command = self.autosave)
b.place (x=230, y=600)
c = tk.Button(bd ='4', text="Clear", width = 20, command = self.clear)
c.place (x=390, y=600)
d = tk.Button(bd ='4', text="Exit", width = 20, command = self.close)
d.place (x=550, y=600)
#Form Feilds Starts from Here:
self.date = tk.Label(font=('Arial', 13,'bold'), text = "Date: ",bg='white')
self.date.place(x=10,y=50)
self.ent_date = tk.Entry(bd='4',width='23')
self.ent_date.place(x=60, y=50)
def autosave(self):
a = 0
fp = open('image.txt')
s = fp.readlines()
line = s[a]
self.ent_date.insert(0, line[0])
box.showinfo('Success','Saved Successfully')
while true:
a += 1
上面的代码使我的程序冻结。如何使“a”的值在每次单击“自动填充”按钮时增加。。?
提前谢谢
如何使“a”的值在每次单击“自动填充”按钮时增加
我猜你想要函数的某种静态存储。然后你可以这样写:
def __init__(self):
# original initialization of your class
self.autosave.a = 0
def autosave(self):
# some other of your code
autosave.a += 1
请参见代码在每次单击按钮时都会加载文件,这是非常低效的。以下几点怎么样:
def __init__(self):
fp = open('image.txt')
s = fp.readlines()
self.a = 0
self.line = s[a]
self.ent_date.insert(0, line[0])
def forms(self):
b = tk.Button(bd ='4', text="Auto Fill", width = 20, command = self.autosave)
...
def autosave(self):
# save the current state, e.g.,
# self.ent_date.insert(0, line[0]) - we'll leave it to the OP
box.showinfo('Success','Saved Successfully')
self.a += 1