Displaying 6.5235375356299998e-07 without exponential notation

Question

I have to convert exponential strings, like 6.5235375356299998e-07, to a float value, and display the result of my computation like 0.00000065235... How can I do this in a Python program?

Answer 1

6.5235375356299998e-07 is a perfectly legal float even if there is an e in it. You can do the whole calculation with it:

>>> 6.5235375356299998e-07 * 10000000
6.5235375356300001

>>> 6.5235375356299998e-07 + 10000000
10000000.000000652

In the second case, many digits will disappear because of the precision of a python's float.

If you need the string representation without e, try this:

>>> '{0:.20f}'.format(6.5235375356299998e-07)
'0.00000065235375356300'

but it will become a string and you won't be able to do any calculus with it any more.