How can I get the width of a string in Python?

[heiner55]

Width with wxPython:

#!/usr/bin/python3
import wx
app = wx.App()

def width_and_height_calculator_in_pixel(txt, fontname, fontsize):
    font = wx.Font(wx.FontInfo(fontsize).FaceName(fontname))
    dc   = wx.ScreenDC()
    dc.SetFont(font)
    size = dc.GetTextExtent(txt)
    return size

print( width_and_height_calculator_in_pixel("Hello World", "Calibri", 11) )
print( width_and_height_calculator_in_pixel("Hello World", "Calibri", 14) )
print( width_and_height_calculator_in_pixel("Hello World", "Calibri", 24) )
print()
print( width_and_height_calculator_in_pixel("Hello World", "Helvetica", 11) )
print( width_and_height_calculator_in_pixel("Hello World", "Helvetica", 14) )
print( width_and_height_calculator_in_pixel("Hello World", "Helvetica", 24) )

Output:
(69, 15)
(90, 19)
(153, 32)

(74, 17)
(98, 22)
(159, 33)