Print extremely large long in scientific notation in python
python
Solution
gmpy to the rescue...:
>>> import gmpy
>>> x = gmpy.mpf(10**1000)
>>> x.digits(10, 0, -1, 1)
'1.e1000'
I'm biased, of course, as the original author and still a committer of `gmpy`, but I do think it eases tasks such as this one that can be quite a chore without it (I don't know a simple way to do it without some add-on, and `gmpy`'s definitely the add-on I'd choose here;-).
Problem
Is there a way to get python to print extremely large longs in scientific notation? I am talking about numbers on the order of 10^1000 or larger, at this size the standard print "%e" % num fails. For example: ``` Python 2.6.2 (release26-maint, Apr 19 2009, 01:56:41) [GCC 4.3.3] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> print "%e" % 10**100 1.000000e+100 >>> print "%e" % 10**1000 Traceback (most recent call last): File "", line 1, in TypeError: float argument required, not long ``` It appears that python is trying to convert the long to a float and then print it, is it possible to get python to just print the long in scientific notation without converting it to a float?