What is the maximum float in Python?
I think the maximum integer in python is available by calling sys.maxint.
What is the maximum float or long in Python?
sys.maxint in Python 3.
For float have a look at sys.float_info:
>>> import sys
>>> sys.float_info
sys.floatinfo(max=1.7976931348623157e+308, max_exp=1024, max_10_exp=308, min=2.2
250738585072014e-308, min_exp=-1021, min_10_exp=-307, dig=15, mant_dig=53, epsil
on=2.2204460492503131e-16, radix=2, rounds=1)
Specifically, sys.float_info.max:
>>> sys.float_info.max
1.7976931348623157e+308
If that's not big enough, there's always positive infinity:
>>> infinity = float("inf")
>>> infinity
inf
>>> infinity / 10000
inf
The long type has unlimited precision, so I think you're only limited by available memory.
sys.maxint is not the largest integer supported by python. It's the largest integer supported by python's regular integer type.
long.
sys.maxint isn't even defined in Python 3, it's called sys.maxsize, which is probably to be preferred in Python 2 as well.
sys.maxsize (introduced in Python 2.6) and sys.maxint are two different things. The first gives the maximum number of objects allowed in a collection (e.g., maximum size of a list, dict, etc.), and corresponds to a signed version of the C size_t type; the second is the point after which the int type switches to long, and is the max value of a C long. On some platforms the two values are different: e.g., on 64-bit Windows, sys.maxsize is 2**63-1 and sys.maxint is 2**31-1.
2**63-1).
If you are using numpy, you can use dtype 'float128' and get a max float of 10e+4931
>>> np.finfo(np.float128)
finfo(resolution=1e-18, min=-1.18973149536e+4932, max=1.18973149536e+4932, dtype=float128)
In python 3 there is no sys.maxint There is a sys.maxsize
>>> sys.maxsize
2147483647
That does not mean that the maximum int is limited to 2 billion! It means that the size of the object containing the integer has a maximum size of 2 billion bytes. I.e. a very very large number
For float have a look at sys.float_info
>>> sys.float_info
sys.float_info(max=1.7976931348623157e+308, max_exp=1024, max_10_exp=308, min=2.2250738585072014e-308, min_exp=-1021, min_10_exp=-307, dig=15, mant_dig=53, epsilon=2.220446049250313e-16, radix=2, rounds=1)
And specifically sys.float_info.max
>>> sys.float_info.max
1.7976931348623157e+308
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sys.float_infois available starting from v2.6. How about v2.3-5?5e-324inffor all things python, andfloat_info.maxas a workaround when the earlier doesn't work, for exampletime.sleep(float("inf"))is not allowed :(