python 3 1 dexcimal code example
Example 1: python format only 1 decimal place
>>> "{0:0.1f}".format(45.34531)
'45.3'
Example 2: fixed precision float python
x = 13.949999999999999999
g = float("{:.2f}".format(x))
>>> "{0:0.1f}".format(45.34531)
'45.3'
x = 13.949999999999999999
g = float("{:.2f}".format(x))