[solved] a 4-digit display

[vr34]

Hello,

I would like to reproduce a 4-digit display with floating point from 0.001 to 9999.
All the digits must be lit (no free space on the left or right)

Possible displays :
0.010 (not 0.01 or 00.01)
0.123
1.200 (not 1.2 or 01.20 or 001.2)
12.34
123.0 (not 123 or 0123)
1234 (no decimal separator)

Among the many examples of the format function on the web, I haven't found any simple solution. Do you have one ?
I look forward to reading you.
Best,

[deanhystad]

I think you found something that nobody else wants to do. I take it that the decimal display is separate from the digits. I think this works:

def fexpand(value, width=4):
    """format value to width digits"""
    d = f"{value:.{width-1}f}".index(".")
    if d >= width:
        return f"{value:.0f}"  # Show no decimal, but round
    return f"{value:.{width-d}f}"  # Show width - d decimal digits

for value in (1, 12, 123, 1234, 1234.8, 0.1, 0.01, 0.001, 0.0001, 0.0008, 1.1, 12.12, 123.123, 1234.1234):
    print(value, "->", fexpand(value))

[vr34]

Many thanks deanhystad
Short and clean.
This displays the most acurate decimal number between 0.001 and 9999 on 4-digits:
0.010 is more acurate than 0.01
1.000 is much more acurate than 1
Several displays I use in my lab are working in this way ;-)

Merci