How can I format a decimal to always show 2 decimal places?

Question

I want to display:

49 as 49.00

and:

54.9 as 54.90

Regardless of the length of the decimal

Answer 1

The String Formatting Operations section of the Python documentation contains the answer you're looking for. In short:

"%0.2f" % (num,)

Some examples:

>>> "%0.2f" % 10
'10.00'
>>> "%0.2f" % 1000
'1000.00'
>>> "%0.2f" % 10.1
'10.10'
>>> "%0.2f" % 10.120
'10.12'
>>> "%0.2f" % 10.126
'10.13'