即使宽度相等，为什么我的标签尺寸不同？

Question

I have a frame, that is in row = 0 , that contains the text High and Low which I would like to have in column = 2 & column = 3 . I have another row below it that contains a numerical value. however on the label I set the width to all be equal to 7.

What am I doing wrong here?

##Forecast Frame
self.ForecastFrame = Frame(self, bg='black')
self.ForecastFrame.grid(row = 0, column = 0)

##Forecast Title
self.forecastTitle = Frame(self.ForecastFrame, bg='white')
self.forecastTitle.grid(row = 0, column = 0, sticky = E)      

self.forecastTitleHighLabel = Label(self.forecastTitle, text='High', font=('HelveticaNeue Light', 12), fg='white', bg='green', width = '7', anchor='center')
self.forecastTitleHighLabel.grid(row = 0, column = 2, sticky = E)

self.forecastTitleLowLabel = Label(self.forecastTitle, text='Low', font=('HelveticaNeue Light', 12), fg='white', bg='blue', width = '7', anchor='center')
self.forecastTitleLowLabel.grid(row = 0, column = 3, sticky = E)

##Forecast One Labels
self.forecastOneDate = ''
self.forecastOneIcon = ''
self.forecastOneHigh = ''
self.forecastOneLow = ''

self.forecastOne = Frame(self.ForecastFrame, bg='black')
self.forecastOne.grid(row = 1, column = 0)

self.forecastOneDateLabel = Label(self.forecastOne, font=('HelveticaNeue Light', 12), fg='white', bg='yellow', width=10, anchor='w')
self.forecastOneDateLabel.grid(row = 0, column = 0, sticky = W)

self.forecastOneIconLabel = Label(self.forecastOne, bg='red', width=50)
self.forecastOneIconLabel.grid(row = 0, column = 1, sticky = W)

self.forecastOneHighLabel = Label(self.forecastOne, font=('HelveticaNeue Light', 12, 'bold'), fg='white', bg='blue', width = '7', anchor='center')
self.forecastOneHighLabel.grid(row = 0, column = 2, sticky = E)

self.forecastOneLowLabel = Label(self.forecastOne, font=('HelveticaNeue Light', 12, 'bold'), fg='white', bg='green', width = '7', anchor='center')
self.forecastOneLowLabel.grid(row = 0, column = 3, sticky = E)

Answer 1

effbot.org: Label

width=

The width of the label. If the label displays text, the size is given in text units . If the label displays an image, the size is given in pixels (or screen units ). If the size is set to 0, or omitted, it is calculated based on the label contents. (width/Width)

It means width depends on font size and weight.

import tkinter as tk

root = tk.Tk()


l1 = tk.Label(root, text='Hello', width=7, fg='white', bg='blue')

f = ('HelveticaNeue Light', 12)

l2 = tk.Label(root, text='Hello', width=7, fg='white', bg='green', font=f)

f = ('HelveticaNeue Light', 12, 'bold')

l3 = tk.Label(root, text='Hello', width=7, fg='white', bg='red', font=f)


l1.grid()
l2.grid()
l3.grid()

root.mainloop()