float_info an object that holds information about internal representation of floating-point numbers the values of these attributes are taken from the float header file attribute description difference between and the next largest float float_info dig number of decimal digits that can be represented without any changes after rounding float_info mant_dig number of digits that can be represented using the numeric base specified in float_info radix float_info max maximum floating-point number float_info max_exp maximum exponent in the numeric base specified in float_info radix float_info max_ _exp maximum exponent in base float_info min minimum positive floating-point value float_info min_exp minimum exponent in the numeric base specified in float_info radix float_info min_ _exp minimum exponent in base float_info radix numeric base used for exponents float_info rounds rounding behavior (- undetermined towards zero nearest towards positive infinity towards negative infinityfloat_info epsilon hexversion integer whose hexadecimal representation encodes the version information contained in sys version_info the value of this integer is always guaranteed to increase with newer versions of the interpreter last_typelast_valuelast_traceback these variables are set when an unhandled exception is encountered and the interpreter prints an error message last_type is the last exception typelast_value is the last exception valueand last_traceback is stack trace note that the use of these variables is not thread-safe sys exc_info(should be used instead maxint largest integer supported by the integer type (python onlymaxsize largest integer value supported by the size_t datatype on the system this value determines the largest possible length for stringslistsdictsand other built-in types maxunicode integer that indicates the largest unicode code point that can be represented the default value is for the -bit ucs- encoding larger value will be found if python has been configured to use ucs- modules dictionary that maps module names to module objects lib fl ff