我需要创建一个GUI,以将数据输入到矩阵或表中并读取此表单数据。 完美的解决方案是将输入格式限制为仅允许float。 例如:
float
A=[[1.02,-0.25,-0.30,0.515],[-0.41,1.13,-0.15,1.555],[-0.25,-0.14,1.21,2.780]]
问题:
我可以使用什么? Tkinter没有表格,Python 3.3.2不支持wxPython
PyQt4呢? 也许您可以举一些例子,说明如何从in表中获取数据[[],[],[]]? 有人有想法吗?
[[],[],[]]
谢谢
使用tkinter,您不需要特殊的表格小部件即可执行此操作,只需创建一个普通条目小部件的网格即可。如果有太多需要滚动条的地方,它会稍微困难一些(本网站上有一些示例,说明如何做到这一点),但是只是创建一个很小的网格就非常简单了。
这是一个示例,其中还包括一些输入验证:
import tkinter as tk class SimpleTableInput(tk.Frame): def __init__(self, parent, rows, columns): tk.Frame.__init__(self, parent) self._entry = {} self.rows = rows self.columns = columns # register a command to use for validation vcmd = (self.register(self._validate), "%P") # create the table of widgets for row in range(self.rows): for column in range(self.columns): index = (row, column) e = tk.Entry(self, validate="key", validatecommand=vcmd) e.grid(row=row, column=column, stick="nsew") self._entry[index] = e # adjust column weights so they all expand equally for column in range(self.columns): self.grid_columnconfigure(column, weight=1) # designate a final, empty row to fill up any extra space self.grid_rowconfigure(rows, weight=1) def get(self): '''Return a list of lists, containing the data in the table''' result = [] for row in range(self.rows): current_row = [] for column in range(self.columns): index = (row, column) current_row.append(self._entry[index].get()) result.append(current_row) return result def _validate(self, P): '''Perform input validation. Allow only an empty value, or a value that can be converted to a float ''' if P.strip() == "": return True try: f = float(P) except ValueError: self.bell() return False return True class Example(tk.Frame): def __init__(self, parent): tk.Frame.__init__(self, parent) self.table = SimpleTableInput(self, 3, 4) self.submit = tk.Button(self, text="Submit", command=self.on_submit) self.table.pack(side="top", fill="both", expand=True) self.submit.pack(side="bottom") def on_submit(self): print(self.table.get()) root = tk.Tk() Example(root).pack(side="top", fill="both", expand=True) root.mainloop()
有关输入验证的更多信息,请参见此处:在tkinter中交互验证Entry小部件内容