十进制格式问题python 3.0

Question

Minor formatting issue: Im having trouble dealing with these kinda values:

97 $ 7.922816251426434e+26 
98 $ 1.5845632502852868e+27 
99 $ 3.1691265005705736e+27 
100 $ 6.338253001141147e+27

I want to make it print normally(?) with just 2 decimal places and the full number not the e+27 in the end..

Thanks for your help in advance!

Answer 1

Try string formatting

"%.2f" % value

Since python 3, you may as well use string.format :

"{:.2f}".format(value)

which looks more complicated, but is more modern and more powerful and worth getting used to ;)

Answer 2

Try using format :

' {0:.2f}'.format(num)

Explanation:

{0} tells format to print the first argument -- in this case, num .

Everything after the colon (:) specifies the format_spec.

f Fixed point. Displays the number as a fixed-point number. The default precision is 6.