OverflowError: math range error - Printable Version +- Python Forum (https://python-forum.io) +-- Forum: Python Coding (https://python-forum.io/forum-7.html) +--- Forum: Data Science (https://python-forum.io/forum-44.html) +--- Thread: OverflowError: math range error (/thread-11812.html) |
OverflowError: math range error - Nick_helps - Jul-26-2018 Hi, I am very new to Python, but have good php knowledge. I need to save and print a big number. How can I do that? Here is my code import math from decimal import Decimal print(Decimal(math.pow(2, 1024)))I m getting "OverflowError: math range error" Thanks, Nick RE: OverflowError: math range error - Vysero - Jul-26-2018 709.78271 is the largest value I can compute the exp of on my machine, I think the numpy module has the ability to handle large numbers RE: OverflowError: math range error - Nick_helps - Jul-26-2018 Got it. Converted math.pow(2, 1024)to 2**1024and it worked. (Jul-26-2018, 08:51 PM)Vysero Wrote: 709.78271 is the largest value I can compute the exp of on my machine, I think the numpy module has the ability to handle large numbers Thanks fro the reply. How can I go about it using numpy module. I searched, but only found examples related to arrays. RE: OverflowError: math range error - casevh - Jul-27-2018 If you are working with integers, you'll find that Python includes arbitrary precision integers. You generally want to avoid working with floats (what the math module generally does.) The following are useful for working with integers: >>> b=100 >>> a+b 12445 >>> a-b 12245 >>> a*b 1234500 >>> a/b # Floating point division in Python 3; varies in Python 2 123.45 >>> a//b # Integer division; in both Python 2 and 3 123 >>> a % b # Remainder 45 >>> divmod(a,b) # Returns both Integer division and Remainder (123, 45) >>> 2 ** 5 # Exponentiation 32While numpy is useful for many purposes, working with large numbers isn't its strong suit. Depending on what you want to do, you may want to use mpmath or gmpy2. Disclaimer: I maintain gmpy2 when I have time. RE: OverflowError: math range error - wavic - Jul-29-2018 Python can work with arbitrary big numbers. I don't know how it's doing that but I have used it to work with integers with few million digits. Try gmpy2 for faster processing. |