round a number to the nearest ten thousandth in python

To round a number to the nearest ten thousandth (or any arbitrary decimal place), you can use the round() function along with the decimal module in Python. Here is an example:

main.py
import decimal

num = 3.14159265
rounded_num = round(decimal.Decimal(num), 4)

print(rounded_num)
98 chars
7 lines

Output:

main.py
3.1416
7 chars
2 lines

In this example, we first import the decimal module. We then use the Decimal() constructor to convert the original num (which is a floating-point number) into a Decimal object. We use the second argument of the round() function to specify the number of decimal places to round the number to. In this case, we round to the nearest ten thousandth (which is the fourth decimal place). Finally, we print the rounded number.