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Reference | textwidth()


Syntax
textwidth(txt, width=None)

DescriptionReturns what would be the width of a text block drawn with the text() command, in the current font(), fontsize() and lineheight(). The parameter sets the text string to measure.
Returnsthe width of the text block, as a floating point number


Example
font("Courier New")
w = textwidth("hello")
print w