2 # Global helper functions
3 def truncate(n, decimals=2):
4 """Truncate a float to a particular number of decimals."""
5 assert decimals > 0 and decimals < 10, "Decimals is weird"
6 multiplier = 10 ** decimals
7 return int(n * multiplier) / multiplier
10 """Format a multiplier nee rate to look nice."""
12 return format_rate(rate - 1.0)
14 return "{:<}%".format(round(rate * 100, 3))