What is the maximum float in Python

Question

I think the maximum integer in python is available by calling sys maxint   What is the maximum float or long in Python

User · Answer

sys maxint is not the largest integer supported by python   It s the largest integer supported by python s regular integer type

User · Answer

For all practical purposes  and with no import at all  one can use  x   float  quot inf quot    More detail on this related question  How can I represent an infinite number in Python

User · Answer

For float have a look at sys float info    gt  gt  gt  import sys  gt  gt  gt  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    gt  gt  gt  sys float info max 1 7976931348623157e 308   If that s not big enough  there s always positive infinity    gt  gt  gt  infinity   float  inf    gt  gt  gt  infinity inf  gt  gt  gt  infinity   10000 inf   The long type has unlimited precision  so I think you re only limited by available memory

User · Answer

If you are using numpy  you can use dtype  float128  and get a max float of 10e 4931   gt  gt  gt  np finfo np float128  finfo resolution 1e-18  min -1 18973149536e 4932  max 1 18973149536e 4932  dtype float128

[python] What is the maximum float in Python?

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