python字符填充对齐 Python填充字符串以对齐Tkinter列表框widg中的列

如果您想在一个列表框中对齐两列字符串，我建议如下：在左字符串和右字符串之间添加空格，以便右字符串始终从同一位置开始(实际上，此位置将变化几个像素，因为即使是“空格”字符也是几个像素宽)

最后你会得到这样的结果：

代码(Python2.x)import Tkinter as Tk

import tkFont

#Create a listbox

master = Tk.Tk()

listbox = Tk.Listbox(master, width=40, height=20)

listbox.pack()

# Dummy strings to align

stringsLeft = ["short", "medium", "extra -long", "short", "medium", "short"]

stringsRight = ["one", "two", "three", "four", "five", "six"]

# Get the listbox font

listFont = tkFont.Font(font=listbox.cget("font"))

# Define spacing between left and right strings in terms of single "space" length

spaceLength = listFont.measure(" ")

spacing = 12 * spaceLength

# find longest string in the left strings

leftLengths = [listFont.measure(s) for s in stringsLeft]

longestLength = max(leftLengths)

# combine left and righ strings with the right number of spaces in between

for i in range(len(stringsLeft)):

neededSpacing = longestLength + spacing - leftLengths[i]

spacesToAdd = int(round(neededSpacing/spaceLength))

listbox.insert(Tk.END, stringsLeft[i] + spacesToAdd * " " + stringsRight[i])

Tk.mainloop()

对于Python 3.x，将import语句替换为：

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